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2. Electromagnetic Assessment and AC Losses of Triaxial Cables with Multiple 2G-HTS Layers Per Phase

Author

Clegg, M. and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Physics - Applied Physics
Abstract

For an accurate estimation of the AC losses of superconducting triaxial cables, we present a 2D model capable to provide a global assessment of multi-layer triaxial cables, validated against the AC-losses on single-phase cables provided by the VNIIKP Cable Institute. Four models are presented, the first being a single-phase cable of 50 tapes and the others being three triaxial cables made of up to 135 coated conductors distributed in up to 9 layers. A systematic study is devised, where the number of layers per phase increases from 1 to 3, with at least 14 tapes distributed across each layer of the first (innermost) phase, 15 in the secondary (middle) phase, and 16 in the third (outermost) phase, respectively. Remarkably, our results reveal that the simple strategy of considering an unbalanced distribution for the amplitudes of the applied current, can generally balance the magnetic field between the three phases even for the bilayer and trilayer cables, resulting in negligible magnetic leaks in all situations. Besides, our simulations allow to see for the first time how the transport and magnetization currents distribute across the thickness of all the superconducting tapes, from which we have found that the AC-losses of the 2nd phase is generally higher than at the other phases at low to moderate transport currents Itr < 0.8 Ic. Nevertheless, depending on whether the Ic of the SC tapes at the 3rd phase layers is lower than the one at the 2nd phase, the layers at the third phase can exhibit a considerable increment on the AC losses, as result of the considered magneto angular anisotropy of the HTS tapes, which lead to intriguing electromagnetic features that suggest a practical threshold for the applied transport current, being it 0.8 Ic. Likewise, the relative change in the AC-losses per adding layers, per phase, and as a function of the applied current is disclosed., Comment: 13 pages, 6 figures, 1 supplementary figure included

Published
2022

3. Practical Forecasting of AC Losses in Multi-layer 2G-HTS Cold Dielectric Conductors

Author

Clegg, M. and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Physics - Applied Physics
Abstract

With the recent progresses on the designing and manufacturing of lightweight and high engineering current density superconducting cables, the need for an established, fast, and sufficiently accurate computational model for the forecasting of AC-losses in cold-dielectric conductors, is pivotal for increasing the investment confidence of power grid operators. However, validating such models is not an easy task, this because on the one hand, there is a low availability of experimental results for large scale power cables and, on the other hand, there is a large number of 2G-HTS tapes involved whose cross-sectional aspect ratio hinders the numerical convergence of the models within reasonable delivery times. Thus, aiming to overcome this challenge, we present a detailed two-dimensional H-model capable to reproduce the experimentally measured AC-losses of multi-layer power cables made of tens of 2G-HTS tapes. Two cable designs with very high critical currents have been considered, the first rated at 1.7 kA critical current, consisting of fifty 4 mm width 2G-HTS tapes, these split in 5 concentric layers wound over a cylindrical former, with the three inner layers forming an arrangement of 24 tapes shielded by two further layers with 13 tapes each. This cable is contrasted with a size wise equivalent cable with 67 superconducting tapes rated at 3.2 kA critical current, whose design implies the use of 40 tapes of 3 mm width split within four core layers, and 27 tapes of 4 mm width distributed in two shielding layers. In both situations a remarkable resemblance between the simulations and experiments has been found, rendering to acceptable estimates of the AC-losses for cold dielectric conductors, and offering a unique view of the local electrodynamics of the wound tapes where the mechanisms of shielding, magnetization, and transport currents can coexist within the hysteretic process., Comment: 4 Figures, 6 pages

Published
2022
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4. Computational Modelling of Russia's First 2G-HTS Triaxial Cable

Author

Clegg, M., Fareed, M. U., Kapolka, M., and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Physics - Applied Physics
Abstract

A better understanding of the interaction between three phases is required when developing superconducting cables for high voltage AC systems. With a particular focus on the energy losses of real power transmission cables, in this paper we utilize the so-called H-formulation of Maxwell equations to devise a 2D model for superconducting triaxial cables. The major aim of this model is to comprehend and reproduce the experimental observations reported on the first triaxial prototype cable developed by SuperOx and VNIIKP. The computationally modelled and prototyped cable is made of up to 87 tapes of 4 mm width SuperOx tape arranged across the three phases. Our computational results are compared to the experimental measurements performed by VNIIKP with the electrical contact method, showing a high degree of accuracy over the outer phase of the cable, whilst revealing technical issues with the experimental measurements at the inner phases. Thus, in consultation with VNIIKP it has been concluded that for the actual experimental measurement of the AC losses at the inner phases, and consequently of the overall cable, a sophisticated calorimetric setup must be built. Still our model is capable to provide an independent assessment of the VNIIKP-SuperOx cable design, by investigating the magnetic profiles per phase in the time domain. In this sense, we confirm that the unbalanced arrange of currents and distancing between the phases affirmatively lead to no magnetic leakages, and therefore to an adequate balance of the cabling inductance., Comment: 9 pages, 3 figures, CEC/ICMC'21 Conference, IOP Conference Series: Materials Science and Engineering, Advances in Cryogenic Engineering (Accepted, Ref. M3Po1A-03, 11 January 2022)

Published
2022
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5. 3D FEM Modelling of CORC Commercial Cables with Bean's like magnetization currents and its AC-Losses Behaviour

Author

Fareed, M. U., Kapolka, M., Robert, B. C., Clegg, M., and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Materials Science, Physics - Applied Physics
Abstract

The Conductor on Rounded Core (CORC) cables manufactured by Advanced Conductor Technologies with current densities beyond 300 Amm^-2 at 4.2 K, and bending diameter of up to 3.5 cm, are considered as one of the strongest candidates for the next generation of high field power applications and magnets. In this paper, we present a full 3D FEM model for their monolayer and bilayer CORC cables made with up to three and six superconducting tapes respectively, disclosing the full curve of AC losses for the monolayer cable at magnetic fields beyond 60 mT, and the actual distribution of current density along and across the thickness of the superconducting tapes in both designs. The model is based on the so-called H-formulation, allowing to incorporate the true three-dimensionality of the tapes without recurring to 2D thin-film approaches where non-physical surface currents that do not follow the celebrated Bean's model for type-II superconductors appear. Likewise, good agreement with the experimentally measured AC-losses for the monolayer and bilayer cable have been obtained, with all the details of the model disclosed in this paper., Comment: Manuscript Accepted at IEEE Transactions on Applied Superconductivity 18 January 2022. Submitted 20 September 2021. his work was supported by the UK Research and Innovation, Engineering and Physical Sciences Research Council (EPSRC), through the grant Ref. EP/S025707/1 led by H.S.R

Published
2022
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6. 3D electromagnetic assessment of bended CORC® cables.

Author

Clegg, M. and Ruiz, H. S.

Subjects
*CABLES, *HIGH temperature superconductors, *STRAINS & stresses (Mechanics), *FINITE element method
Abstract

Conductor on round core (CORC®) cables have emerged as a leading contender in high-temperature superconducting (HTS) cable designs, offering exceptional performance with current densities surpassing 300 A / mm 2 and the ability to withstand high axial tensile and compressive strain. Despite their remarkable properties, optimizing CORC® cables remains a challenge, particularly in accurately estimating their AC losses under real-world conditions, which necessitates advanced numerical modeling techniques. Building upon recent advancements in simulating straight CORC® cables, where Bean's-like current profiles were observed across the actual thickness of wound superconducting tapes, we introduce a tailored computational approach to enhance the processing speed of three-dimensional (3D) finite element models of wound HTS tapes. This tailored approach is specifically designed to address the complexities of bent CORC® cables, which exhibit helicoidal winding and are subjected to varying mechanical strain. We focus on analyzing their electromagnetic performance by transitioning from idealized straight-former designs to more realistic scenarios where cable-formers are bent to accommodate flexible cable routing or coil configurations. Our simulations consider a typical cable design comprising three 4 mm-wide SuperPower tapes (SCS4050) with a twist pitch of 40 mm. We demonstrate the capability to accurately model the full electromagnetic behavior of bent CORC® cables without the reduction of degrees of freedom, providing valuable insights into their performance under bending conditions. Our findings contribute to the ongoing optimization of CORC® cable designs for a wide range of practical applications in high-current and high-magnetic field environments. [ABSTRACT FROM AUTHOR]

Published
2024
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7. 3D Modelling and Validation of the Optimal Pitch in Commercial CORC Cables

Author

Fareed, M. U., Kapolka, M., Robert, B. C., Clegg, M., and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Physics - Instrumentation and Detectors
Abstract

Conductor on a rounded core (CORC\textsuperscript{\textregistered}) cables with current densities beyond 300 A/mm$^{-2}$ at 4.2 K, and a capacity to retain around 90 $\%$ of critical current after bending to a diameter of 3.5 cm, make them a strong candidate for high field power applications and magnets. In this paper, we present a full 3D-FEM model based upon the so-called H-formulation for commercial CORC\textsuperscript{\textregistered} cables manufactured by Advanced Conductor Technologies LLC. The model presented consists of tapes ranging from 1 up to 3 SuperPower 4mm-width tapes in 1 single layer and at multiple pitch angles. By varying the twist pitch, local electromagnetic characteristics such as the current density distribution along the length and width are visualized. Measurements of macroscopical quantities such as AC-losses are disclosed in comparison with available experimental measurements. We particularly focused on the influence of the twist pitch by comparing the efficiency and performance of multiple cables, critically assessing the optimal twist pitch angle., Comment: 9 pages, 3 figures, CEC/ICMC'21 Conference, IOP Conference Series: Materials Science and Engineering, Advances in Cryogenic Engineering

Published
2021
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8. Critical State Theory For The Magnetic Coupling Between Soft Ferromagnetic Materials And Type-II Superconductors

Author

Fareed, M. U. and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Physics - Applied Physics
Abstract

Improving our understanding of the physical coupling between type-II superconductors (SC) and soft ferromagnetic materials (SFM), is root for progressing onto the application of SC-SFM metastructures in scenarios such as magnetic cloaking, magnetic shielding, and power transmission systems. However, in the latter some intriguing and yet unexplained phenomena occurred, such as a noticeable rise in the SC energy losses, and a local but not isotropic deformation of its magnetic flux density. These phenomena, which are in apparent contradiction with the most fundamental theory of electromagnetism for superconductivity, i.e., the critical state theory (CST), have remained unexplained for about 20 years, given place to the acceptance of the controversial and yet paradigmatic existence of the so-called overcritical current densities. Therefore, aimed to resolve these long-standing problems, we extended the CST by incorporating a semi-analytical model for cylindrical monocore SC-SFM heterostructures, setting the standards for its validation with a variational approach of multipole functionals for the magnetic coupling between Sc and SFM materials. It is accompanied by a comprehensive numerical study for SFM sheaths of arbitrary dimensions and magnetic relative permeabilities $\mu_{r}$, ranging from $\mu_{r}=5$ (NiZn ferrites) to $\mu_{r}=350000$ (pure Iron), showing how the AC-losses of the SC-SFM metastructure radically changes as a function of the SC and the SFM radius for $\mu_{r} \geq 100$. Our numerical technique and simulations revealed also a good qualitative agreement with the magneto optical imaging observations that were questioning the CST validness, proving therefore that the reported phenomena for self-field SC-SFM heterostructures can be understood without including the ansatz of overcritical currents., Comment: 14 pages, 5 figures

Published
2021
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9. Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC

Author

Beteta, C. Abellán, Albero, A. Alfonso, Amhis, Y., Barsuk, S., Beigbeder-Beau, C., Belyaev, I., Bonnefoy, R., Breton, D., Callot, O., Gomez, M. Calvo, Camboni, A., Chanal, H., Charlet, D., Chefdeville, M., Coco, V., Cogneras, E., Comerma-Montells, A., Coquereau, S., Deschamps, O., Bonal, F. Domingo, Drancourt, C., Duarte, O., Dayot, N. Dumont, Dzhelyadin, R., Egorychev, V., Esperante, D., Filippov, S., Garrido, L., Gascon, D., Ghez, Ph., Gioi, L. L., Gironell, P. Gironella, Golubkov, D., Golutvin, A., Gàndara, M. Grabalosa, Diaz, R. Graciani, Graugés, E., Gushchin, E., Guz, Yu., Hadjivasiliou, C., Jean-Marie, B., Konoplyannikov, A., Kristic, R., Kvaratskheliya, T., Lefèvre, R., Lefrançois, J., Li, Y., Machefert, F., Machikhiliyan, I., Marchand, J. -F., Benito, C. Marin, Martens, A., Martin-Sànchez, A., Matveev, V., Mauricio, J., Minard, M. -N., Monteil, S., Niess, V., Obraztsov, V., Pereima, D., Perret, P., Olloqui, E. Picatoste, Pietrzyk, B., Navarro, A. Puig, Rives-Molina, V., Robbe, P., Roselló, M., Ruiz, H., Mayordomo, C. Sanchez, Savrina, D., Schopper, A., Schune, M. H., Semennikov, A., Shatalov, P., Soldatov, M., Stenyakin, O., Tisserand, V., T'Jampens, S., Tocut, V., Tournefier, E., Vallier, A., Gomez, R. Vazquez, Viaud, B., Vilasis-Cardona, X., Winn, M., Yushchenko, O., and Zhokhov, A.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The calibration and performance of the LHCb Calorimeter system in Run 1 and 2 at the LHC are described. After a brief description of the sub-detectors and of their role in the trigger, the calibration methods used for each part of the system are reviewed. The changes which occurred with the increase of beam energy in Run 2 are explained. The performances of the calorimetry for $\gamma$ and $\pi^0$ are detailed. A few results from collisions recorded at $\sqrt {s}$ = 7, 8 and 13 TeV are shown., Comment: All figures and tables, along with any supplementary material and additional information, are available at http://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-DP-2020-001.html (LHCb public pages)

Published
2020

10. GIS-AHP Multi-Decision-Criteria-Analysis for the Optimal Location of Solar Energy Plants at Indonesia

Author

Ruiz, H. S., Sunarso, A., Ibrahim-bathis, K., Murti, S. A., and Budiarto, I.

Subjects
Computer Science - Computers and Society, Physics - Geophysics
Abstract

A reliable tool for site-suitability assessment of solar power plants capable to account for the sustainable development and protection of cultural and biodiversity conservation areas is proposed. We present a novel Analytic Hierarchy Process (AHP) based approach for the Multi-Decision Criteria Analysis (MDCA) of SSI satellite retrieved data and local information sources, it within a GIS platform tailored to fit the needs of energy stakeholders at Indonesia, simultaneously ensuring the conservation of legally protected areas. This imposes significant challenges due to the wide diversification of cultural, natural, and ecological protected areas that need to be considered, in landmarks that demand for high resolution imaging of surface solar irradiance (SSI) within $\pm 4^{\circ}$ of the equator. To overcome these challenges, a GIS spatial weighted overlay analysis for criteria layers such as climatology, topography, electrical grid, and road infrastructure has been performed, it based on the technical and economic feasibility for solar plants deployment within three approximation schemes focused on their proximity to the existing (i) power network, (ii) road infrastructure, and (iii) community settlements. Here, we focused on the West Kalimantan Province of Borneo Island (WKP), it mainly due to its possibility of onshore inter-connectivity and energy share with Malaysia and Brunei, and the high national and international importance that brings forward the protection of the biodiversity of Borneo. It has been found that the optimal location of PV plants can be reduced to just $0.03\%$ ($46.60~km^{2}$) and $0.07\%$ ($108.58~{km}^{2}$) of WKP, in what we report as the best-suitable conditions out of the $33.05\%$ exploitable area found after the exclusion of conservation areas. This corresponds to ..., Comment: This work was supported by the Institutional Links grant, ID 413871894, under the Newton Fund Indonesia partnership. The grant is funded by the UK Department for Business, Energy and Industrial Strategy and the Indonesian Ministry of Research, Technology, Higher Education and delivered by the British Council. For further information, please visit www.newtonfund.ac.uk

Published
2020

11. Local electromagnetic properties and hysteresis losses in Non-Uniformly wound 2G-HTS Racetrack Coils

Author

Robert, B. C., Fareed, M. U., and Ruiz, H. S.

Subjects
Condensed Matter - Superconductivity, Physics - Applied Physics
Abstract

A noteworthy physical dependence of the hysteresis losses with the axial winding misalignment of superconducting racetrack coils made with commercial \textcolor{black}{Second Generation High Temperature Superconducting (2G-HTS)} tapes is reported. A comprehensive study on the influence of the turn-to-turn misalignment factor on the local electromagnetic properties of individual turns, is presented by considering six different coil arrangements and ten amplitudes for the applied alternating transport current, $I_{a}$, together with an experimentally determined function for the magneto-angular anisotropy properties of the critical current density, $J_{c}(B,\theta)$, across the superconducting tape. It has been found that for moderate to low applied currents $I_{a} \leq 0.6~I_{c0}$, with $I_{c0}$ the self-field critical current of individual tapes, the resulting hysteretic losses under extreme winding deformations can lead to an increase in the energy losses of up to $25\%$ the losses generated by a perfectly wound coil. High level meshing considerations have been applied in order to get a realistic account of the local and global electromagnetic properties of racetrack coils, .... Our findings can be used as a practical benchmark to determine the relative losses for any 2G-HTS racetrack coil application, unveiling the physical fingerprints that possible coil winding misalignments could infer., Comment: 19 pages, 5 figures. Submitted AIP 16-Apr-2019 05:02:38

Published
2019
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17. Particle Smoothing for Hidden Diffusion Processes: Adaptive Path Integral Smoother

Author

Ruiz, H. -Ch. and Kappen, H. J.

Subjects
Computer Science - Learning, Statistics - Computation
Abstract

Particle smoothing methods are used for inference of stochastic processes based on noisy observations. Typically, the estimation of the marginal posterior distribution given all observations is cumbersome and computational intensive. In this paper, we propose a simple algorithm based on path integral control theory to estimate the smoothing distribution of continuous-time diffusion processes with partial observations. In particular, we use an adaptive importance sampling method to improve the effective sampling size of the posterior over processes given the observations and the reliability of the estimation of the marginals. This is achieved by estimating a feedback controller to sample efficiently from the joint smoothing distributions. We compare the results with estimations obtained from the standard Forward Filter/Backward Simulator for two diffusion processes of different complexity. We show that the proposed method gives more reliable estimations than the standard FFBSi when the smoothing distribution is poorly represented by the filter distribution., Comment: 16 pages, 13 figures

Published
2016
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18. Effect of a Topical Formulation on Infective Viral Load in Lambs Naturally Infected with Orf Virus

Author

Lacasta D, Reina R, Ruiz de Arcaute M, Ferrer LM, Benito AA, Tejedor MT, Echeverria I, Ruiz H, Martinez Cardenas S, and Windsor PA

Subjects
sheep, contagious ecthyma, wound formulation, local therapy, Veterinary medicine, SF600-1100
Abstract

Delia Lacasta,1 Ramses Reina,2 Marta Ruiz de Arcaute,1 Luis Miguel Ferrer,1 Alfredo Angel Benito,3 Maria Teresa Tejedor,4 Irache Echeverria,2 Hector Ruiz,1 Silvia Martinez Cardenas,1 Peter Andrew Windsor5 1Animal Pathology Department, Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Veterinary Faculty of Zaragoza, Zaragoza, 50013, Spain; 2Instituto de Agrobiotecnología (CSIC-Gobierno de Navarra), Mutilva, 31192, Navarra, Spain; 3EXOPOL S.L, San Mateo de Gállego, Zaragoza, Spain; 4Anatomy, Embryology and Animal Genetics Department, CIBER CV (Universidad de Zaragoza-IIS), Veterinary Faculty of Zaragoza, Zaragoza, 50013, Spain; 5Sydney School of Veterinary Science, The University of Sydney, Camden, NSW, 2570, AustraliaCorrespondence: Delia LacastaFacultad de Veterinaria de Zaragoza, C/Miguel Servet 177, Zaragoza, 50013, SpainTel +34 609676727Email dlacasta@gmail.comIntroduction: Orf is a highly contagious eruptive viral disease of the skin and mucosa of sheep and goats. Although vaccination with live or attenuated orf virus is the preferred option for disease control, the vaccine is unavailable in many countries. Treatment of orf lesions involves standard hygiene and in numerous cases, management of presumptive secondary infections with antibiotics, increasing risks of antimicrobial resistance (AMR). The wound dressing formulation Tri-Solfen® containing two local anaesthetics (lignocaine and bupivacaine), adrenaline and an antiseptic (cetrimide) in a gel formulation was developed for pain relief in sheep undergoing surgical husbandry procedures in Australia. Recently, TS therapy was found to reduce suffering and enhance recovery in cattle and buffalo with oral and skin lesions due to foot-and-mouth disease (FMD) virus infection. It was noted that TS has a low pH and is potentially viricidal, potentially aiding disease control.Methods: One-month-old lambs (n=14), naturally infected with orf, were recruited from a farm during a natural outbreak of the disease. The animals were selected at the early stages of the infection and randomly divided into two cohorts: Group A (n=11) treated with the topical wound gel formulation (TS); and Group B (n=3) an untreated control group. Swabs were obtained before treatment (T0) and on days one (T1), 3 (T2) and 5 (T3) post-treatment, then submitted to direct DNA extraction with real-time PCR quantification, plus incubation with primary tissue cultures from ovine skin fibroblasts (OSF) and T-immortalized goat embryonic fibroblasts (TIGEF).Results: Although no significant differences were found in the clinical progression of the lesions and PCR quantification (p=0.722) between these small cohorts, there was a significant difference (p< 0.05) in reduction in infective viral load between the groups when assessed in OSF cell cultures between T0 and T3.Conclusion: These preliminary findings suggest that treatment of early stage lesions with this TS may reduce the infective viral load present in orf lesions.Keywords: sheep, contagious ecthyma, wound formulation, local therapy

Published
2021

19. Compressibility, diffusivity, and elasticity in relationship with ionic conduction: An atomic scale description of densified Li2S${\rm Li}_2{\rm S}$–SiS2${\rm SiS}_2$ glasses.

Author

Micoulaut, M., Poitras, L.‐M., Sørensen, S. S., Flores‐Ruiz, H., and Naumis, G. G.

Subjects
MOLECULAR dynamics, COMPRESSIBILITY, ELASTICITY, ELECTROLYTES, ELECTRODES, SOLID state batteries
Abstract

We examine the dynamic and ionic properties of a typical sulfide glass electrolyte 50Li2S${\rm Li}_2{\rm S}$–50SiS2${\rm SiS}_2$ using molecular dynamics simulations and a previously parameterized force‐field able to describe both the crystalline Li2SiS3${\rm Li}_2 {\rm SiS}_3$ phase and the corresponding glass. We especially focus on the effect of moderate pressures on the glassy and supercooled state since the design of all‐solid state batteries use molding conditions at moderate pressures in order to achieve contact between the electrolyte and the electrodes. The behavior of the conductivity σ(P)$\sigma (P)$ with pressure permits to define an activation volume and to infer the role of compressibility and diffusivity, the latter contributing dominantly to ionic conduction, whereas temperature does not seem to impact the structural properties. These features are linked with the underlying dynamics of the Li ions as studied here by computing the longitudinal and transversal atomic species current correlations. The resulting elasticity is found to be close to experimental values. [ABSTRACT FROM AUTHOR]

Published
2024
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20. Studies of the resonance structure in $D^0\to K^0_S K^{\pm}\pi^{\mp}$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Buchanan, E., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., Francisco, O. De Aguiar, De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. 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Subjects
High Energy Physics - Experiment
Abstract

Amplitude models are applied to studies of resonance structure in $D^0\to K^0_S K^- \pi^+$ and $D^0\to K^0_S K^+ \pi^-$ decays using $pp$ collision data corresponding to an integrated luminosity of $3.0\,\mathrm{fb}^{-1}$ collected by the LHCb experiment. Relative magnitude and phase information is determined, and coherence factors and related observables are computed for both the whole phase space and a restricted region of $100\,\mathrm{MeV/}c^2$ around the $K^{*}(892)^{\pm}$ resonance. Two formulations for the $K\pi$ $S$-wave are used, both of which give a good description of the data. The ratio of branching fractions $\mathcal{B}(D^0\to K^0_S K^+ \pi^-)/\mathcal{B}(D^0\to K^0_S K^- \pi^+)$ is measured to be $0.655\pm0.004\,(\textrm{stat})\pm0.006\,(\textrm{syst})$ over the full phase space and $0.370\pm0.003\, (\textrm{stat})\pm0.012\,(\textrm{syst})$ in the restricted region. A search for $CP$ violation is performed using the amplitude models and no significant effect is found. Predictions from $SU(3)$ flavor symmetry for $K^{*}(892)K$ amplitudes of different charges are compared with the amplitude model results., Comment: 56 pages, 27 tables, 12 figures. Updated to published version

Published
2015
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21. Measurement of the $B_s^0 \to \phi \phi$ branching fraction and search for the decay $B^0 \to \phi \phi$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belloli, N., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Billoir, P., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Buchanan, E., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. 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F., Koppenburg, P., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. 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Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefkova, S., Steinkamp, O., Stenyakin, O., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

Using a dataset corresponding to an integrated luminosity of 3.0 fb$^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the $B_s^0 \to \phi \phi$ branching fraction is measured to be \[ \mathcal{B}(B_s^0 \to \phi \phi) = ( 1.84 \pm 0.05 (\text{stat}) \pm 0.07 (\text{syst}) \pm 0.11 (f_s/f_d) \pm 0.12 (\text{norm}) ) \times 10^{-5}, \] where $f_s/f_d$ represents the ratio of the $B_s^0$ to $B^0$ production cross-sections, and the $B^0 \to \phi K^*(892)^0$ decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay $B^0 \to \phi \phi$ is also made. No signal is observed, and an upper limit on the branching fraction is set as \[ \mathcal{B}(B^0 \to \phi \phi) < 2.8 \times 10^{-8} \] at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.

Published
2015
Full Text
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22. Implementation of Resistive Type Superconducting Fault Current Limiters in Electrical Grids: Performance Analysis and Measuring of Optimal Locations

Author

Zhang, Xiuchang, Ruiz, H. S., Zhong, Z., and Coombs, T. A.

Subjects
Condensed Matter - Superconductivity, Computer Science - Systems and Control, Physics - Instrumentation and Detectors
Abstract

In the past few years there has been a significant rise in the short-circuit current levels in transmission and distribution networks, it due to the increasing demands on power and the addition of sources of distributed generations. It leads to the need of integration of novel protection systems such as the superconducting fault current limiters (SFCLs), ... . SFCL models on the electric distribution networks largely rely on the insertion of a step or exponential resistance that is determined by a predefined quenching time. However, beyond the framework of these models, the study of the performance, reliability, and location strategy for the installation of sole or multiple SFCLs in power grids still lacks of proper development leading to the utter need of comprehensive and systematic studies on this issue. In this paper, we expand the scope of the aforementioned models by considering the actual behaviour of a SFCL in terms of the temperature dynamic power-law dependence between the electrical field and the current density. Our results are compared with step-resistance models for the sake of discussion and clarity of the conclusions. Both SFCL models were integrated into a power system model built based on the UK power standard, and the impact of these protection strategies on the performance of the overall electricity network was studied. As a representative renewable energy source, a 90 MVA wind farm was considered for the simulations. Three fault conditions have been simulated, and the figures for the fault current reduction predicted by both fault current limiting models have been compared in terms of multiple current measuring points and allocation strategies...

Published
2015

23. $B$ flavour tagging using charm decays at the LHCb experiment

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belloli, N., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Billoir, P., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Buchanan, E., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kecke, M., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Michielin, E, Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Muller, D., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Coutinho, R. Silva, de Oliveira, L. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefkova, S., Steinkamp, O., Stenyakin, O., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

An algorithm is described for tagging the flavour content at production of neutral $B$ mesons in the LHCb experiment. The algorithm exploits the correlation of the flavour of a $B$ meson with the charge of a reconstructed secondary charm hadron from the decay of the other $b$ hadron produced in the proton-proton collision. Charm hadron candidates are identified in a number of fully or partially reconstructed Cabibbo-favoured decay modes. The algorithm is calibrated on the self-tagged decay modes $B^+ \to J/\psi \, K^+$ and $B^0 \to J/\psi \, K^{*0}$ using $3.0\mathrm{\,fb}^{-1}$ of data collected by the LHCb experiment at $pp$ centre-of-mass energies of $7\mathrm{\,TeV}$ and $8\mathrm{\,TeV}$. Its tagging power on these samples of $B \to J/\psi \, X$ decays is $(0.30 \pm 0.01 \pm 0.01) \%$., Comment: All figures and tables, along with any supplementary material and additional information, are available at http://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-027.html

Published
2015
Full Text
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24. Measurement of the branching fraction ratio $\mathcal{B}(B_c^+ \rightarrow \psi(2S)\pi^+)/\mathcal{B}(B_c^+ \rightarrow J/\psi \pi^+)$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderson, J., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusardi, N., Lusiani, A., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

Using $pp$ collision data collected by LHCb at center-of-mass energies $\sqrt{s}$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$, the ratio of the branching fraction of the $B_c^+ \rightarrow \psi(2S)\pi^+$ decay relative to that of the $B_c^+ \rightarrow J/\psi\pi^+$ decay is measured to be 0.268 $\pm$ 0.032 (stat) $\pm$ 0.007 (syst) $\pm$ 0.006 (BF). The first uncertainty is statistical, the second is systematic, and the third is due to the uncertainties on the branching fractions of the $J/\psi \rightarrow \mu^+\mu^-$ and $\psi(2S) \rightarrow \mu^+\mu^-$ decays. This measurement is consistent with the previous LHCb result, and the statistical uncertainty is halved., Comment: 17 pages including author list, 2 figures

Published
2015
Full Text
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25. Search for long-lived heavy charged particles using a ring imaging Cherenkov technique at LHCb

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

A search is performed for heavy long-lived charged particles using 3.0 fb$^{-1}$ of pp collisions collected at $\sqrt{s}$= 7 and 8 TeV with the LHCb detector. The search is mainly based on the response of the ring imaging Cherenkovdetectors to distinguish the heavy, slow-moving particles from muons. No evidence is found for the production of such long-lived states. The results are expressed as limits on the Drell-Yan production of pairs of long-lived particles, with both particles in the LHCb pseudorapidity acceptance, $1.8 < \eta < 4.9$. The mass-dependent cross-section upper limits are in the range 2-4 fb (at 95\% CL) for masses between 124 and 309 GeV/c$^2$.

Published
2015
Full Text
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26. Angular analysis and differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusardi, N., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

An angular analysis and a measurement of the differential branching fraction of the decay $B^0_s\to\phi\mu^+\mu^-$ are presented, using data corresponding to an integrated luminosity of $3.0\, {\rm fb^{-1}}$ of $pp$ collisions recorded by the LHCb experiment at $\sqrt{s} = 7$ and $8\, {\rm TeV}$. Measurements are reported as a function of $q^{2}$, the square of the dimuon invariant mass and results of the angular analysis are found to be consistent with the Standard Model. In the range $1

Published
2015
Full Text
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27. First observation of the decay $B_{s}^{0} \to K_{S}^{0} K^{*}(892)^{0}$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

A search for $B_{(s)}^{0} \to K_{S}^{0} K^{*}(892)^{0}$ decays is performed using $pp$ collision data, corresponding to an integrated luminosity of $1.0~\text{fb}^{-1}$, collected with the LHCb detector at a centre-of-mass energy of $7~\text{TeV}$. The $B_{s}^{0} \to K_{S}^{0} K^{*}(892)^{0}$ decay is observed for the first time, with a significance of 7.1 standard deviations. The branching fraction is measured to be \begin{equation*} \mathcal{B}(B_{s}^{0} \to \bar{K}^{0} K^{*}(892)^{0}) + \mathcal{B}(B_{s}^{0} \to K^{0} \bar{K}^{*}(892)^{0}) = (16.4 \pm 3.4 \pm 2.3) \times 10^{-6},\\ \end{equation*} where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay $B^{0} \to K_{S}^{0} K^{*}(892)^{0}$ and an upper limit is set on the branching fraction, $\mathcal{B}(B^{0} \to \bar{K}^{0} K^{*}(892)^{0}) + \mathcal{B}(B^{0} \to K^{0} \bar{K}^{*}(892)^{0}) < 0.96 \ \times 10^{-6}, $ at $90\,\% $ confidence level. All results are consistent with Standard Model predictions., Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-018.html

Published
2015
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28. Measurement of the ratio of branching fractions $\mathcal{B}(\overline{B}^0 \to D^{*+}\tau^{-}\overline{\nu}_{\tau})/\mathcal{B}(\overline{B}^0 \to D^{*+}\mu^{-}\overline{\nu}_{\mu})$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, P., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusardi, N., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

The branching fraction ratio $\mathcal{R}(D^{*}) \equiv \mathcal{B}(\overline{B}^0 \to D^{*+}\tau^{-}\overline{\nu}_{\tau})/\mathcal{B}(\overline{B}^0 \to D^{*+}\mu^{-}\overline{\nu}_{\mu})$ is measured using a sample of proton-proton collision data corresponding to 3.0\invfb of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The tau lepton is identified in the decay mode $\tau^{-} \to \mu^{-}\overline{\nu}_{\mu}\nu_{\tau}$. The semitauonic decay is sensitive to contributions from non-Standard-Model particles that preferentially couple to the third generation of fermions, in particular Higgs-like charged scalars. A multidimensional fit to kinematic distributions of the candidate $\overline{B}^0$ decays gives $\mathcal{R}(D^{*}) = 0.336 \pm 0.027(stat) \pm 0.030 (syst)$. This result, which is the first measurement of this quantity at a hadron collider, is 2.1 standard deviations larger than the value expected from lepton universality in the Standard Model., Comment: 17 pages, 1 figure. v2 after referees' comments

Published
2015
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29. First observation of top quark production in the forward region

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. 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C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zucchelli, S.

Subjects
High Energy Physics - Experiment
Abstract

Top quark production in the forward region in proton-proton collisions is observed for the first time. The $W\!+\!b$ final state with $W\to\mu\nu$ is reconstructed using muons with a transverse momentum, $p_{\rm T}$, larger than 25 GeV in the pseudorapidity range $2.0<\eta<4.5$. The $b$ jets are required to have $50 < p_{\rm T} < 100$ GeV and $2.2 < \eta < 4.2$, while the transverse component of the sum of the muon and $b$-jet momenta must satisfy $p_{\rm T} > 20$ GeV. The results are based on data corresponding to integrated luminosities of 1.0 and $2.0$ fb$^{-1}$ collected at center-of-mass energies of 7 and 8 TeV by LHCb. The inclusive top quark production cross-sections in the fiducial region are $\sigma({\rm top})[7\rm{TeV}] = 239\pm53({\rm stat})\pm33({\rm syst})\pm24({\rm theory})\,{\rm fb}$ and $\sigma({\rm top})[8\rm{TeV}] = 289\pm43({\rm stat})\pm40({\rm syst})\pm29({\rm theory})\,{\rm fb}$. These results, along with the observed differential yields and charge asymmetries, are in agreement with next-to-leading order Standard Model predictions.

Published
2015
Full Text
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30. Measurement of the exclusive $\Upsilon$ production cross-section in $pp$ collisions at $\sqrt{s}=$7 TeV and 8 TeV

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

A study is presented of central exclusive production of $\Upsilon(nS)$ states, where the $\Upsilon(nS)$ resonances decay to the $\mu^+\mu^-$ final state, using $pp$ collision data recorded by the LHCb experiment. The cross-section is measured in the rapidity range $2

Published
2015
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31. Study of $B^{-}\to DK^-\pi^+\pi^-$ and $B^-\to D\pi^-\pi^+\pi^-$ decays and determination of the CKM angle $\gamma$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

We report a study of the suppressed $B^-\to DK^-\pi^+\pi^-$ and favored $B^-\to D\pi^-\pi^+\pi^-$ decays, where the neutral $D$ meson is detected through its decays to the $K^{\mp}\pi^{\pm}$ and CP-even $K^+K^-$ and $\pi^+\pi^-$ final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0~fb$^{-1}$. We observe the first significant signals in the CP-even final states of the $D$ meson for both the suppressed $B^-\to DK^-\pi^+\pi^-$ and favored $B^-\to D\pi^-\pi^+\pi^-$ modes, as well as in the doubly Cabibbo-suppressed $D\to K^+\pi^-$ final state of the $B^-\to D\pi^-\pi^+\pi^-$ decay. Evidence for the ADS suppressed decay $B^{-}\to DK^-\pi^+\pi^-$, with $D\to K^+\pi^-$, is also presented. From the observed yields in the $B^-\to DK^-\pi^+\pi^-$, $B^-\to D\pi^-\pi^+\pi^-$ and their charge conjugate decay modes, we measure the value of the weak phase to be $\gamma=(74^{+20}_{-19})^{\rm o}$. This is one of the most precise single-measurement determinations of $\gamma$ to date., Comment: 22 pages, 9 figures; All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-020.html

Published
2015
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32. Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. 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Subjects
High Energy Physics - Experiment
Abstract

A measurement of the production cross-section for $Z$ bosons that decay to muons is presented. The data were recorded by the LHCb detector during $pp$ collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb$^{-1}$. The cross-section is measured for muons in the pseudorapidity range $2.0 < \eta < 4.5$ with transverse momenta $p_{T} > 20$ GeV/c. The dimuon mass is restricted to $60 < M_{\mu^{+}\mu^{-}} < 120$ GeV/c$^{2}$. The measured cross-section is $$\sigma_{Z\rightarrow\mu^{+}\mu^{-}} = (76.0 \pm 0.3 \pm 0.5 \pm 1.0 \pm 1.3) \, \text{pb}$$ where the uncertainties are due to the sample size, systematic effects, the beam energy and the luminosity. This result is in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. The cross-section is also measured differentially as a function of kinematic variables of the $Z$ boson. Ratios of the production cross-sections of electroweak bosons are presented using updated LHCb measurements of $W$ boson production. A precise test of the Standard Model is provided by the measurement of the ratio $$\frac{\sigma_{W^{+}\rightarrow\mu^{+}\nu_{\mu}} + \sigma_{W^{-}\rightarrow\mu^{-}\bar{\nu}_{\mu}}}{\sigma_{Z\rightarrow\mu^{+}\mu^{-}}} = 20.63\pm0.09\pm0.12\pm0.05,$$ where the uncertainty due to luminosity cancels., Comment: New version in line with version accepted by JHEP. Small changes to the layout of figures. Results unchanged

Published
2015
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33. Study of $W$ boson production in association with beauty and charm

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. 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Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Ronayne, J. W., Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The associated production of a $W$ boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. The analysis uses data corresponding to integrated luminosities of 1.0 and $2.0\,{\rm fb}^{-1}$ collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, respectively. The $W$ bosons are reconstructed using the $W\to\mu\nu$ decay and muons with a transverse momentum, $p_{\rm T}$, larger than 20 GeV in the pseudorapidity range $2.0<\eta<4.5$. The partons are reconstructed as jets with $p_{\rm T} > 20$ GeV and $2.2 < \eta < 4.2$. The sum of the muon and jet momenta must satisfy $p_{\rm T} > 20$ GeV. The fraction of $W+$jet events that originate from beauty and charm quarks is measured, along with the charge asymmetries of the $W\!+\!b$ and $W\!+\!c$ production cross-sections. The ratio of the $W+$jet to $Z+$jet production cross-sections is also measured using the $Z\to\mu\mu$ decay. All results are in agreement with Standard Model predictions.

Published
2015
Full Text
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34. Search for the $\Lambda_b \rightarrow \Lambda \eta^\prime$ and $\Lambda_b \rightarrow \Lambda \eta$ decays with the LHCb detector

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

A search is performed for the as yet unobserved baryonic $\Lambda_b \rightarrow \Lambda \eta^\prime$ and $\Lambda_b \rightarrow \Lambda \eta$ decays with 3$fb^{-1}$ of proton-proton collision data recorded by the LHCb experiment. The $B^0 \rightarrow K_S^0 \eta^\prime$ decay is used as a normalisation channel. No significant signal is observed for the $\Lambda_b \rightarrow \Lambda \eta^\prime$ decay. An upper limit is found on the branching fraction of $\mathcal{B}(\Lambda_b \rightarrow \Lambda \eta^\prime)<3.1\times10^{-6}$} at 90\% confidence level. Evidence is seen for the presence of the $\Lambda_b \rightarrow \Lambda \eta$ decay at the level of $3\sigma$ significance, with a branching fraction $\mathcal{B}(\Lambda_b \rightarrow \Lambda \eta)=(9.3^{+7.3}_{-5.3})\times10^{-6}$}., Comment: 22 pages, 6 figures. v2 is published version (very minor revisions)

Published
2015
Full Text
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35. Search for the decay $B_s^0 \to \overline{D}^{0} f_{0}(980)$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. 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A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. 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Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

A search for $B_s^0 \to \overline{D}^{0} f_{0}(980)$ decays is performed using $3.0\, {\rm fb}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. The $f_{0}(980)$ meson is reconstructed through its decay to the $\pi^{+}\pi^{-}$ final state in the mass window $900\, {\rm MeV}/c^{2} < m(\pi^{+}\pi^{-}) < 1080\, {\rm MeV}/c^{2}$. No significant signal is observed. The first upper limits on the branching fraction of $\mathcal{B}(B_s^0 \to \overline{D}^{0} f_{0}(980)) < 3.1\,(3.4) \times 10^{-6}$ are set at $90\,\%$ ($95\,\%$) confidence level., Comment: 20 pages, 2 figures, published in JHEP

Published
2015
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36. Dalitz plot analysis of $B^0 \to \overline{D}^0 \pi^+\pi^-$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassen, R., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belogurov, S., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Nicol, M., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Pal, B. K., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Parkinson, C. J., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M. P., Williams, M., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, W. C., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The resonant substructures of $B^0 \to \overline{D}^0 \pi^+\pi^-$ decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions collected by the LHCb detector is used. The branching fraction of the $B^0 \to \overline{D}^0 \pi^+\pi^-$ decay in the region $m(\overline{D}^0\pi^{\pm})>2.1$ GeV$/c^2$ is measured to be $(8.46 \pm 0.14 \pm 0.29 \pm 0.40) \times 10^{-4}$, where the first uncertainty is statistical, the second is systematic and the last arises from the normalisation channel $B^0 \to D^*(2010)^-\pi^+$. The $\pi^+\pi^-$ S-wave components are modelled with the Isobar and K-matrix formalisms. Results of the Dalitz plot analyses using both models are presented. A resonant structure at $m(\overline{D}^0\pi^-) \approx 2.8$ GeV$/c^{2}$ is confirmed and its spin-parity is determined for the first time as $J^P = 3^-$. The branching fraction, mass and width of this structure are determined together with those of the $D^*_0(2400)^-$ and $D^*_2(2460)^-$ resonances. The branching fractions of other $B^0 \to \overline{D}^0 h^0$ decay components with $h^0 \to \pi^+\pi^-$ are also reported. Many of these branching fraction measurements are the most precise to date. The first observation of the decays $B^0 \to \overline{D}^0 f_0(500)$, $B^0 \to \overline{D}^0 f_0(980)$, $B^0 \to \overline{D}^0 \rho(1450)$, $B^0 \to D_3^*(2760)^- \pi^+$ and the first evidence of $B^0 \to \overline{D}^0 f_0(2020)$ are presented., Comment: 64 pages, 17 figures

Published
2015
Full Text
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37. Amplitude analysis of $B^0 \rightarrow \bar{D}^0 K^+ \pi^-$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Lohn, S., Longstaff, I., Lopes, J. H., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, T., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The Dalitz plot distribution of $B^0 \rightarrow \bar{D}^0 K^+ \pi^-$ decays is studied using a data sample corresponding to $3.0\rm{fb}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. The data are described by an amplitude model that contains contributions from intermediate $K^*(892)^0$, $K^*(1410)^0$, $K^*_2(1430)^0$ and $D^*_2(2460)^-$ resonances. The model also contains components to describe broad structures, including the $K^*_0(1430)^0$ and $D^*_0(2400)^-$ resonances, in the $K\pi$ S-wave and the $D\pi$ S- and P-waves. The masses and widths of the $D^*_0(2400)^-$ and $D^*_2(2460)^-$ resonances are measured, as are the complex amplitudes and fit fractions for all components included in the amplitude model. The model obtained will be an integral part of a future determination of the angle $\gamma$ of the CKM quark mixing matrix using $B^0 \rightarrow D K^+ \pi^-$ decays., Comment: 33 pages, 12 figures; updated for publication

Published
2015
Full Text
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38. Identification of beauty and charm quark jets at LHCb

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fohl, K., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Martinez, M. Lucio, Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Matthieu, K., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

Identification of jets originating from beauty and charm quarks is important for measuring Standard Model processes and for searching for new physics. The performance of algorithms developed to select $b$- and $c$-quark jets is measured using data recorded by LHCb from proton-proton collisions at $\sqrt{s}=7$ TeV in 2011 and at $\sqrt{s}=8$ TeV in 2012. The efficiency for identifying a $b(c)$ jet is about 65%(25%) with a probability for misidentifying a light-parton jet of 0.3% for jets with transverse momentum $p_{\rm T} > 20$ GeV and pseudorapidity $2.2 < \eta < 4.2$. The dependence of the performance on the $p_{\rm T}$ and $\eta$ of the jet is also measured.

Published
2015
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39. Quantum numbers of the $X(3872)$ state and orbital angular momentum in its $\rho^0 J\psi$ decay

Author

LHCb collaboration, Aaij, R., Beteta, C. Abellan, Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Bachmann, S., Back, J. J., Baesso, C., Balagura, V., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Bauer, Th., Bay, A., Beddow, J., Bedeschi, F., Bediaga, I., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Benayoun, M., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Bjørnstad, P. M., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brambach, T., Brand, J. van den, Bressieux, J., Brett, D., Britsch, M., Britton, T., Brook, N. H., Brown, H., Burducea, I., Bursche, A., Busetto, G., Buytaert, J., Cadeddu, S., Callot, O., Calvi, M., Gomez, M. Calvo, Camboni, A., Campana, P., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carranza-Mejia, H., Carson, L., Akiba, K. Carvalho, Casse, G., Cattaneo, M., Cauet, Ch., Charles, M., Charpentier, Ph., Chen, P., Chiapolini, N., Chrzaszcz, M., Ciba, K., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coca, C., Coco, V., Cogan, J., Cogneras, E., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Couturier, B., Cowan, G. A., Craik, D., Cunliffe, S., Currie, R., D'Ambrosio, C., David, P., David, P. N. Y., De Bonis, I., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., Campos, M. De Oyanguren, De Paula, L., De Silva, W., De Simone, P., Decamp, D., Deckenhoff, M., Del Buono, L., Derkach, D., Deschamps, O., Dettori, F., Di Canto, A., Dijkstra, H., Dogaru, M., Donleavy, S., Dordei, F., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dupertuis, F., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., van Eijk, D., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Elsby, D., Falabella, A., Färber, C., Fardell, G., Farinelli, C., Farry, S., Fave, V., Ferguson, D., Albor, V. Fernandez, Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fitzpatrick, C., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Furcas, S., Furfaro, E., Torreira, A. Gallas, Galli, D., Gandelman, M., Gandini, P., Gao, Y., Garofoli, J., Garosi, P., Tico, J. Garra, Garrido, L., Gaspar, C., Gauld, R., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gibson, V., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gordon, H., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hampson, T., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hartmann, T., He, J., Heijne, V., Hennessy, K., Henrard, P., Morata, J. A. Hernando, van Herwijnen, E., Hicks, E., Hill, D., Hoballah, M., Hombach, C., Hopchev, P., Hulsbergen, W., Hunt, P., Huse, T., Hussain, N., Hutchcroft, D., Hynds, D., Iakovenko, V., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jans, E., Jaton, P., Jing, F., John, M., Johnson, D., Jones, C. R., Jost, B., Kaballo, M., Kandybei, S., Karacson, M., Karbach, T. M., Kenyon, I. R., Kerzel, U., Ketel, T., Keune, A., Khanji, B., Kochebina, O., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kozlinskiy, A., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucharczyk, M., Kudryavtsev, V., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanciotti, E., Lanfranchi, G., Langenbruch, C., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leo, S., Leroy, O., Leverington, B., Li, Y., Gioi, L. Li, Liles, M., Lindner, R., Linn, C., Liu, B., Liu, G., von Loeben, J., Lohn, S., Lopes, J. H., Asamar, E. Lopez, Lopez-March, N., Lu, H., Lucchesi, D., Luisier, J., Luo, H., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Manca, G., Mancinelli, G., Marconi, U., Märki, R., Marks, J., Martellotti, G., Martens, A., Martin, L., Sánchez, A. Martín, Martinelli, M., Santos, D. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Maurice, E., Mazurov, A., McCarthy, J., McNulty, R., Mcnab, A., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Rodriguez, J. Molina, Monteil, S., Moran, D., Morawski, P., Morello, M. J., Mountain, R., Mous, I., Muheim, F., Müller, K., Muresan, R., Muryn, B., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neufeld, N., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Nicol, M., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Nomerotski, A., Novoselov, A., Oblakowska-Mucha, A., Obraztsov, V., Oggero, S., Ogilvy, S., Okhrimenko, O., Oldeman, R., Orlandea, M., Goicochea, J. M. Otalora, Owen, P., Pal, B. K., Palano, A., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Parkes, C., Parkinson, C. J., Passaleva, G., Patel, G. D., Patel, M., Patrick, G. N., Patrignani, C., Pavel-Nicorescu, C., Alvarez, A. Pazos, Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perego, D. L., Trigo, E. Perez, Yzquierdo, A. Pérez-Calero, Perret, P., Perrin-Terrin, M., Pessina, G., Petridis, K., Petrolini, A., Phan, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Playfer, S., Casasus, M. Plo, Polci, F., Polok, G., Poluektov, A., Polycarpo, E., Popov, D., Popovici, B., Potterat, C., Powell, A., Prisciandaro, J., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Rademacker, J. H., Rakotomiaramanana, B., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redford, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, A., Rinnert, K., Molina, V. Rives, Romero, D. A. Roa, Robbe, P., Rodrigues, E., Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rouvinet, J., Ruf, T., Ruffini, F., Ruiz, H., Valls, P. Ruiz, Sabatino, G., Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Salzmann, C., Sedes, B. Sanmartin, Sannino, M., Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sapunov, M., Sarti, A., Satriano, C., Satta, A., Savrie, M., Savrina, D., Schaack, P., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Seco, M., Semennikov, A., Senderowska, K., Sepp, I., Serra, N., Serrano, J., Seyfert, P., Shapkin, M., Shapoval, I., Shatalov, P., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, O., Shevchenko, V., Shires, A., Coutinho, R. Silva, Skwarnicki, T., Smith, N. A., Smith, E., Smith, M., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Sparkes, A., Spradlin, P., Stagni, F., Stahl, S., Steinkamp, O., Stoica, S., Stone, S., Storaci, B., Straticiuc, M., Straumann, U., Subbiah, V. K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Teodorescu, E., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Tran, M. T., Tresch, M., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Urner, D., Uwer, U., Vagnoni, V., Valenti, G., Gomez, R. Vazquez, Regueiro, P. Vazquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., Voss, H., Waldi, R., Wallace, R., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Webber, A. D., Websdale, D., Whitehead, M., Wicht, J., Wiechczynski, J., Wiedner, D., Wiggers, L., Wilkinson, G., Williams, M. P., Williams, M., Wilson, F. F., Wishahi, J., Witek, M., Wotton, S. A., Wright, S., Wu, S., Wyllie, K., Xie, Y., Xing, F., Xing, Z., Yang, Z., Young, R., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, F., Zhang, L., Zhang, W. C., Zhang, Y., Zhelezov, A., Zhokhov, A., Zhong, L., and Zvyagin, A.

Subjects
High Energy Physics - Experiment
Abstract

Angular correlations in $B^+\to X(3872) K^+$ decays, with $X(3872)\to \rho^0 J/\psi$, $\rho^0\to\pi^+\pi^-$ and $J/\psi \to\mu^+\mu^-$, are used to measure orbital angular momentum contributions and to determine the $J^{PC}$ value of the $X(3872)$ meson. The data correspond to an integrated luminosity of 3.0 fb$^{-1}$ of proton-proton collisions collected with the LHCb detector. This determination, for the first time performed without assuming a value for the orbital angular momentum, confirms the quantum numbers to be $J^{PC}=1^{++}$. The $X(3872)$ is found to decay predominantly through S wave and an upper limit of $4\%$ at $95\%$ C.L. is set on the fraction of D wave., Comment: 16 pages, 4 figures

Published
2015
Full Text
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40. A study of $CP$ violation in $B^\mp \rightarrow Dh^\mp$ ($h=K,\pi$) with the modes $D \rightarrow K^\mp \pi^\pm \pi^0$, $D \rightarrow \pi^+\pi^-\pi^0$ and $D \rightarrow K^+K^-\pi^0$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., d'Argent, P., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

An analysis of the decays of $B^\mp \rightarrow D K^\mp$ and $B^\mp \rightarrow D \pi^\mp $ is presented in which the $D$ meson is reconstructed in the three-body final states $K^\mp \pi^\pm \pi^0$, $\pi^+ \pi^- \pi^0$ and $K^+ K^- \pi^0$. Using data from LHCb corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions, measurements of several $CP$ observables are performed. First observations are obtained of the suppressed ADS decay $B^\mp \rightarrow [\pi^\mp K^\pm \pi^0]_D \pi^\mp$ and the quasi-GLW decay $B^\mp \rightarrow [K^+ K^- \pi^0]_D \pi^\mp$. The results are interpreted in the context of the unitarity triangle angle $\gamma$ and related parameters.

Published
2015
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41. Determination of the quark coupling strength $|V_{ub}|$ using baryonic decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, INSPIRE-00452191, Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, J., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Ninci, D, Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petruzzo, M., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Tekampe, T., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

In the Standard Model of particle physics, the strength of the couplings of the $b$ quark to the $u$ and $c$ quarks, $|V_{ub}|$ and $|V_{cb}|$, are governed by the coupling of the quarks to the Higgs boson. Using data from the LHCb experiment at the Large Hadron Collider, the probability for the $\Lambda^0_b$ baryon to decay into the $p \mu^- \overline{\nu}_\mu$ final state relative to the $\Lambda^+_c \mu^- \overline{\nu}_\mu$ final state is measured. Combined with theoretical calculations of the strong interaction and a previously measured value of $|V_{cb}|$, the first $|V_{ub}|$ measurement to use a baryonic decay is performed. This measurement is consistent with previous determinations of $|V_{ub}|$ using $B$ meson decays to specific final states and confirms the existing incompatibility with those using an inclusive sample of final states., Comment: 18 pages, 5 figures

Published
2015
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42. First observation and measurement of the branching fraction for the decay $B^0_s \to D_s^{*\mp} K^{\pm}$

Author

LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, INSPIRE-00452191, Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The first observation of the $B^0_s \to D_s^{*\mp} K^{\pm}$ decay is reported using 3.0$fb^{-1}$ of proton-proton collision data collected by the LHCb experiment. The $D_s^{*\mp}$ mesons are reconstructed through the decay chain $D_s^{*\mp} \to \gamma D_s^{\mp}(K^{\mp}K^{\pm}\pi^{\mp})$. The branching fraction relative to that for $B^0_s \to D_s^{*-} \pi^{+}$ is measured to be $0.068 \pm 0.005 ^{+0.003}_{-0.002}$, where the first uncertainty is statistical and the second is systematic. Using a recent measurement of $BR(B^0_s \to D_s^{*-} \pi^{+})$ the absolute branching fraction of $B^0_s \to D_s^{*\mp} K^{\pm}$ is measured as ( 16.3 $\pm$ 1.2 (stat) $^{+0.7}_{-0.5}$ (syst) $\pm$ 4.8 (norm) ) $\times$ 10$^{-5}$, where the third uncertainty is due to the uncertainty on the branching fraction of the normalisation channel., Comment: 17 pages, 4 figures

Published
2015
Full Text
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43. Observation of the ${B^0 \to \rho^0 \rho^0}$ decay from an amplitude analysis of ${B^0 \to (\pi^+\pi^-)(\pi^+\pi^-)}$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

Proton-proton collision data recorded in 2011 and 2012 by the \lhcb experiment, co\-rres\-pon\-ding to an integrated luminosity of 3.0\invfb, are a\-na\-lysed to search for the charmless ${B^0 \to \rho^0 \rho^0}$ decay. More than 600 ${\B^0 \to (\pi^+\pi^-)(\pi^+\pi^-)}$ signal decays are selected and used to perform an amplitude analysis from which the ${B^0 \to \rho^0 \rho^0}$ decay is observed for the first time with 7.1 standard deviations significance. The fraction of ${B^0 \to \rho^0 \rho^0}$ decays yielding a longitudinally polarised final state is measured to be $\fL = 0.745^{+0.048}_{-0.058} ({\rm stat}) \pm 0.034 ({\rm syst})$. The ${B^0 \to \rho^0 \rho^0}$ branching fraction, using the ${\B^0 \to \phi K^*(892)^{0}}$ decay as reference, is also reported as ${\BF(B^0 \to \rho^0 \rho^0) = (0.94 \pm 0.17 ({\rm stat}) \pm 0.09 ({\rm syst}) \pm 0.06 ({\rm BF})) \times 10^{-6}}$., Comment: as published in PLB

Published
2015
Full Text
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44. Observation of the $B^0_s\to\eta'\eta'$ decay

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassen, R., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belogurov, S., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Nicol, M., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Pal, B. K., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Parkinson, C. J., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M. P., Williams, M., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, W. C., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The first observation of the $B^0_s\to\eta'\eta'$ decay is reported. The study is based on a sample of proton-proton collisions corresponding to $3.0$ ${\rm fb^{-1}}$ of integrated luminosity collected with the LHCb detector. The significance of the signal is $6.4$ standard deviations. The branching fraction is measured to be $[3.31 \pm 0.64\,{\rm (stat)} \pm 0.28\,{\rm (syst)} \pm 0.12\,{\rm (norm)}]\times10^{-5}$, where the third uncertainty comes from the $B^{\pm}\to\eta' K^{\pm}$ branching fraction that is used as a normalisation. In addition, the charge asymmetries of $B^{\pm}\to\eta' K^{\pm}$ and $B^{\pm}\to\phi K^{\pm}$, which are control channels, are measured to be $(-0.2 \pm1.3)\%$ and $(+1.7\pm1.3)\%$, respectively. All results are consistent with theoretical expectations.

Published
2015
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45. Observation of the decay $\overline{B}_s^0 \rightarrow \psi(2S) K^+ \pi^-$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. 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Subjects
High Energy Physics - Experiment
Abstract

The decay $\overline{B}_s^0 \rightarrow \psi(2S) K^+ \pi^-$ is observed using a data set corresponding to an integrated luminosity of $3.0fb^{-1}$ collected by the LHCb experiment in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV. The branching fraction relative to the $B^0\rightarrow \psi(2S) K^+ \pi^-$ decay mode is measured to be \begin{equation} \frac{{\cal B}(\overline{B}^0_s \rightarrow \psi(2S) K^+ \pi^-)}{{\cal B}(B^0 \rightarrow \psi(2S) K^+ \pi^-)} = 5.38 \pm 0.36 (stat) \pm 0.22 (syst) \pm 0.31 \, (f_s/f_d) \, \%,\nonumber \end{equation} where $f_s/f_d$ indicates the uncertainty due to the ratio of probabilities for a $b$ quark to hadronise into a $B_s^0$ or $B^0$ meson. Using an amplitude analysis, the fraction of decays proceeding via an intermediate $K^*(892)^0$ meson is measured to be $0.645 \pm 0.049 (stat) \pm 0.049 (syst)$ and its longitudinal polarisation fraction is $0.524 \pm 0.056 (stat) \pm 0.029 (syst)$. The relative branching fraction for this component is determined to be \begin{equation} \frac{{\cal B}(\overline{B}^0_s \rightarrow \psi(2S) K^*(892)^0)}{{\cal B}(B^0 \rightarrow \psi(2S) K^*(892)^0)} = 5.58 \pm 0.57 (stat) \pm 0.40 (syst) \pm 0.32 \, (f_s/f_d) \, \%. \nonumber \end{equation} In addition, the mass splitting between the $B_s^0$ and $B^0$ mesons is measured as \begin{equation} M(B^0_s) - M(B^0) = 87.45 \pm 0.44 (stat) \pm 0.07 (syst) MeV/c^2. \nonumber \end{equation}, Comment: 15 pages, 7 figures. v2 updated with published version. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-010.html

Published
2015
Full Text
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46. Differential branching fraction and angular analysis of $\Lambda^{0}_{b} \rightarrow \Lambda \mu^+\mu^-$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. 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Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The differential branching fraction of the rare decay $\Lambda^{0}_{b} \rightarrow \Lambda \mu^+\mu^-$ is measured as a function of $q^{2}$, the square of the dimuon invariant mass. The analysis is performed using proton-proton collision data, corresponding to an integrated luminosity of $3.0 \mbox{ fb}^{-1}$, collected by the LHCb experiment. Evidence of signal is observed in the $q^2$ region below the square of the $J/\psi$ mass. Integrating over $15 < q^{2} < 20 \mbox{ GeV}^2/c^4$ the branching fraction is measured as $d\mathcal{B}(\Lambda^{0}_{b} \rightarrow \Lambda \mu^+\mu^-)/dq^2 = (1.18 ^{+ 0.09} _{-0.08} \pm 0.03 \pm 0.27) \times 10^{-7} ( \mbox{GeV}^{2}/c^{4})^{-1}$, where the uncertainties are statistical, systematic and due to the normalisation mode, $\Lambda^{0}_{b} \rightarrow J/\psi \Lambda$, respectively. In the $q^2$ intervals where the signal is observed, angular distributions are studied and the forward-backward asymmetries in the dimuon ($A^{l}_{\rm FB}$) and hadron ($A^{h}_{\rm FB}$) systems are measured for the first time. In the range $15 < q^2 < 20 \mbox{ GeV}^2/c^4$ they are found to be $A^{l}_{\rm FB} = -0.05 \pm 0.09 \mbox{ (stat)} \pm 0.03 \mbox{ (syst)}$ and $A^{h}_{\rm FB} = -0.29 \pm 0.07 \mbox{ (stat)} \pm 0.03 \mbox{ (syst)}$., Comment: 27 pages, 10 figures, Erratum added

Published
2015
Full Text
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47. Measurement of $CP$ violation in $B^0 \rightarrow J/\psi K^0_S$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Birnkraut, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Ferrari, F., Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Müller, V., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

Measurements are presented of the $CP$ violation observables $S$ and $C$ in the decays of $B^0$ and $\overline{B}{}^0$ mesons to the $J/\psi K^0_S$ final state. The data sample corresponds to an integrated luminosity of $3.0\,\text{fb}^{-1}$ collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of $7$ and $8\,\text{TeV}$. The analysis of the time evolution of $41500$ $B^0$ and $\overline{B}{}^0$ decays yields $S = 0.731 \pm 0.035 \, \text{(stat)} \pm 0.020 \,\text{(syst)}$ and $C = -0.038 \pm 0.032 \, \text{(stat)} \pm 0.005\,\text{(syst)}$. In the Standard Model, $S$ equals $\sin(2\beta)$ to a good level of precision. The values are consistent with the current world averages and with the Standard Model expectations., Comment: 19 pages, 5 figures; updated Ref. [11]

Published
2015
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48. Measurement of the time-dependent CP asymmetries in $B_s^0\rightarrow J/\psi K_{\rm S}^0$

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilschut, H. W., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The first measurement of decay-time-dependent CP asymmetries in the decay $B_s^0\rightarrow J/\psi K_{\rm S}^0$ and an updated measurement of the ratio of branching fractions $\mathcal{B}(B_s^0\rightarrow J/\psi K_{\rm S}^0)/\mathcal{B}(B_d^0\rightarrow J/\psi K_{\rm S}^0)$} are presented. The results are obtained using data corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The results on the CP asymmetries are $A_{\Delta\Gamma}(B_s^0\rightarrow J/\psi K_{\rm S}^0) = 0.49_{-0.65}^{+0.77}(stat) \pm 0.06(syst)$, $C_{\rm dir}(B_s^0\rightarrow J/\psi K_{\rm S}^0) = -0.28 \pm 0.41(stat) \pm 0.08(syst)$ and $S_{\rm mix}(B_s^0\rightarrow J/\psi K_{\rm S}^0) = -0.08 \pm 0.40(stat) \pm 0.08(syst)$. The ratio $\mathcal{B}(B_s^0\rightarrow J/\psi K_{\rm S}^0)/\mathcal{B}(B_d^0\rightarrow J/\psi K_{\rm S}^0)$ is measured to be $0.0431 \pm 0.0017(stat) \pm 0.0012(syst) \pm 0.0025(f_s/f_d)$, where the last uncertainty is due to the knowledge of the $B_s^0$ and $B_d^0$ production fractions., Comment: 18+5 pages, 5 figures, matching published version

Published
2015
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49. Measurement of $CP$ asymmetries and polarisation fractions in $B_s^0 \rightarrow K^{*0}\bar{K}{}^{*0}$ decays

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassen, R., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belogurov, S., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Nicol, M., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Pal, B. K., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Parkinson, C. J., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M. P., Williams, M., Wilschut, H. W., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, W. C., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

An angular analysis of the decay $B_s^0 \rightarrow K^{*0}\bar{K}{}^{*0}$ is performed using $pp$ collisions corresponding to an integrated luminosity of $1.0$ ${fb}^{-1}$ collected by the LHCb experiment at a centre-of-mass energy $\sqrt{s} = 7$ TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction $f_L = 0.201 \pm 0.057 {(stat.)} \pm 0.040{(syst.)}$ for the $B_s^0 \rightarrow K^*(892)^0 \bar{K}{}^*(892)^0$ decay. A large scalar contribution from the $K^{*}_{0}(1430)$ and $K^{*}_{0}(800)$ resonances is found, allowing the determination of additional $CP$ asymmetries. Triple product and direct $CP$ asymmetries are determined to be compatible with the Standard Model expectations. The branching fraction $\mathcal{B}(B_s^0 \rightarrow K^*(892)^0 \bar{K}{}^*(892)^0)$ is measured to be $(10.8 \pm 2.1 {\ \rm (stat.)} \pm 1.4 {\ \rm (syst.)} \pm 0.6 \ (f_d/f_s) ) \times 10^{-6}$.

Published
2015
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50. First observation and amplitude analysis of the $B^{-}\to D^{+}K^{-}\pi^{-}$ decay

Author

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. Alvarez, Alves Jr, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., Andrews, J. E., Appleby, R. B., Gutierrez, O. Aquines, Archilli, F., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Bettler, M. -O., van Beuzekom, M., Bien, A., Bifani, S., Bird, T., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Bondar, A., Bondar, N., Bonivento, W., Borghi, S., Borgia, A., Borsato, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Brett, D., Britsch, M., Britton, T., Brodzicka, J., Brook, N. H., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Gomez, M. Calvo, Campana, P., Perez, D. Campora, Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Akiba, K. Carvalho, Mohr, R. Casanova, Casse, G., Cassina, L., Garcia, L. Castillo, Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chefdeville, M., Chen, S., Cheung, S. -F., Chiapolini, N., Chrzaszcz, M., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coombes, M., Coquereau, S., Corti, G., Corvo, M., Counts, I., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A. C., Torres, M. Cruz, Cunliffe, S., Currie, R., D'Ambrosio, C., Dalseno, J., David, P. N. Y., Davis, A., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Silva, W., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Déléage, N., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Di Ruscio, F., Dijkstra, H., Donleavy, S., Dordei, F., Dorigo, M., Suárez, A. Dosil, Dossett, D., Dovbnya, A., Dreimanis, K., Dujany, G., Dupertuis, F., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Rifai, I. El, Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Färber, C., Farinelli, C., Farley, N., Farry, S., Fay, R., Ferguson, D., Albor, V. Fernandez, Rodrigues, F. Ferreira, Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fol, P., Fontana, M., Fontanelli, F., Forty, R., Francisco, O., Frank, M., Frei, C., Frosini, M., Fu, J., Furfaro, E., Torreira, A. Gallas, Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., Pardiñas, J. García, Garofoli, J., Tico, J. Garra, Garrido, L., Gascon, D., Gaspar, C., Gastaldi, U., Gauld, R., Gavardi, L., Gazzoni, G., Geraci, A., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianelle, A., Gianì, S., Gibson, V., Giubega, L., Gligorov, V. V., Göbel, C., Golubkov, D., Golutvin, A., Gomes, A., Gotti, C., Gándara, M. Grabalosa, Diaz, R. Graciani, Cardoso, L. A. Granado, Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greening, E., Gregson, S., Griffith, P., Grillo, L., Grünberg, O., Gui, B., Gushchin, E., Guz, Yu., Gys, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Hampson, T., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., He, J., Head, T., Heijne, V., Hennessy, K., Henrard, P., Henry, L., Morata, J. A. Hernando, van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hoballah, M., Hombach, C., Hulsbergen, W., Humair, T., Hussain, N., Hutchcroft, D., Hynds, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., Jing, F., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Karbach, T. M., Karodia, S., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khanji, B., Khurewathanakul, C., Klaver, S., Klimaszewski, K., Kochebina, O., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Korolev, M., Kravchuk, L., Kreplin, K., Kreps, M., Krocker, G., Krokovny, P., Kruse, F., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kurek, K., Kvaratskheliya, T., La Thi, V. N., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lambert, R. W., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Gac, R. Le, van Leerdam, J., Lees, J. -P., Lefèvre, R., Leflat, A., Lefrançois, J., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Liles, M., Lindner, R., Linn, C., Lionetto, F., Liu, B., Lohn, S., Longstaff, I., Lopes, J. H., Lowdon, P., Lucchesi, D., Luo, H., Lupato, A., Luppi, E., Lupton, O., Machefert, F., Machikhiliyan, I. V., Maciuc, F., Maev, O., Malde, S., Malinin, A., Manca, G., Mancinelli, G., Manning, P., Mapelli, A., Maratas, J., Marchand, J. F., Marconi, U., Benito, C. Marin, Marino, P., Märki, R., Marks, J., Martellotti, G., Martinelli, M., Santos, D. Martinez, Vidal, F. Martinez, Tostes, D. Martins, Massafferri, A., Matev, R., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., McSkelly, B., Meadows, B., Meier, F., Meissner, M., Merk, M., Milanes, D. A., Minard, M. -N., Rodriguez, J. Molina, Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. -B., Mountain, R., Muheim, F., Müller, K., Mussini, M., Muster, B., Naik, P., Nakada, T., Nandakumar, R., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen, T. D., Nguyen-Mau, C., Niess, V., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Okhrimenko, O., Oldeman, R., Onderwater, C. J. G., Rodrigues, B. Osorio, Goicochea, J. M. Otalora, Otto, A., Owen, P., Oyanguren, A., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Altarelli, M. Pepe, Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Olloqui, E. Picatoste, Pietrzyk, B., Pilař, T., Pinci, D., Pistone, A., Playfer, S., Casasus, M. Plo, Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Navarro, A. Puig, Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rakotomiaramanana, B., Rama, M., Rangel, M. S., Raniuk, I., Rauschmayr, N., Raven, G., Redi, F., Reichert, S., Reid, M. M., Reis, A. C. dos, Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Molina, V. Rives, Robbe, P., Rodrigues, A. B., Rodrigues, E., Lopez, J. A. Rodriguez, Perez, P. Rodriguez, Roiser, S., Romanovsky, V., Vidal, A. Romero, Rotondo, M., Rouvinet, J., Ruf, T., Ruiz, H., Valls, P. Ruiz, Silva, J. J. Saborido, Sagidova, N., Sail, P., Saitta, B., Guimaraes, V. Salustino, Mayordomo, C. Sanchez, Sedes, B. Sanmartin, Santacesaria, R., Rios, C. Santamarina, Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmidt, B., Schneider, O., Schopper, A., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sepp, I., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Coutinho, R. Silva, Simi, G., Sirendi, M., Skidmore, N., Skillicorn, I., Skwarnicki, T., Smith, N. A., Smith, E., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Soomro, F., Souza, D., De Paula, B. Souza, Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Steinkamp, O., Stenyakin, O., Sterpka, F., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Stroili, R., Sun, L., Sutcliffe, W., Swientek, K., Swientek, S., Syropoulos, V., Szczekowski, M., Szczypka, P., Szumlak, T., T'Jampens, S., Teklishyn, M., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Todd, J., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Torr, N., Tournefier, E., Tourneur, S., Trabelsi, K., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tuning, N., Garcia, M. Ubeda, Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valenti, G., Vallier, A., Gomez, R. Vazquez, Regueiro, P. Vazquez, Sierra, C. Vázquez, Vecchi, S., Velthuis, J. J., Veltri, M., Veneziano, G., Vesterinen, M., Barbosa, J. V. Viana, Viaud, B., Vieira, D., Diaz, M. Vieites, Vilasis-Cardona, X., Vollhardt, A., Volyanskyy, D., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wandernoth, S., Wang, J., Ward, D. R., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wiedner, D., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Wilschut, H. W., Wilson, F. F., Wimberley, J., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wright, S., Wyllie, K., Xie, Y., Xu, Z., Yang, Z., Yuan, X., Yushchenko, O., Zangoli, M., Zavertyaev, M., Zhang, L., Zhang, Y., Zhelezov, A., Zhokhov, A., and Zhong, L.

Subjects
High Energy Physics - Experiment
Abstract

The $B^{-}\to D^{+}K^{-}\pi^{-}$ decay is observed in a data sample corresponding to $3.0~\rm{fb}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. Its branching fraction is measured to be ${\cal B}(B^{-}\to D^{+}K^{-}\pi^{-}) = (7.31 \pm 0.19 \pm 0.22 \pm 0.39) \times 10^{-5}$ where the uncertainties are statistical, systematic and from the branching fraction of the normalisation channel $B^{-}\to D^{+}\pi^{-}\pi^{-}$, respectively. An amplitude analysis of the resonant structure of the $B^{-}\to D^{+}K^{-}\pi^{-}$ decay is used to measure the contributions from quasi-two-body $B^{-}\to D_{0}^{*}(2400)^{0}K^{-}$, $B^{-}\to D_{2}^{*}(2460)^{0}K^{-}$, and $B^{-}\to D_{J}^{*}(2760)^{0}K^{-}$ decays, as well as from nonresonant sources. The $D_{J}^{*}(2760)^{0}$ resonance is determined to have spin~1., Comment: 39 pages, 10 figures, submitted to Phys. Rev. D. Updated following erratum 10.1103/PhysRevD.93.119901

Published
2015
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