Author: "Cunming Liu" / Topic: 01 natural sciences - Searchworks@Jio Institute Digital Library Search Results

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1. Direct Spectroscopic Observation of the Hole Polaron in Lead Halide Perovskites

Author: Xiaoyi Zhang, Hsinhan Tsai, Cunming Liu, David J. Gosztola, and Wanyi Nie
Subjects: Valence (chemistry), Materials science, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Polaron, 01 natural sciences, 0104 chemical sciences, Photoexcitation, Atomic orbital, Chemical physics, Ultrafast laser spectroscopy, General Materials Science, Charge carrier, Physical and Theoretical Chemistry, 0210 nano-technology, Spectroscopy, Perovskite (structure)
Abstract: The intrinsic photophysical origin of lead halide perovskites (LHPs) that are used successfully in optolectronic applications remains hotly debated. Here, by using ultrafast X-ray transient absorption spectroscopy, we successfully tracked the fate of photogenerated charge carriers at room temperature within the thin films of two classic LHPs, namely, MAPbBr3 (MA = CH3NH3) and FAPbBr3 [FA = CH(NH2)2]. We clearly observed in both thin films that the hole polaron is formed by localizing the photogenerated hole at the Br 4p orbital and concurrently distorting the local structure surrounding the Br atom after the photoexcitation. Furthermore, the larger FA cation in the cavity of the [PbBr6]4- octahedral framework induces a stronger hole polaron effect due to the hybridization of its p orbital into valence and conduction bands, correlating with the slower charge carrier recombination dynamics. Our direct experimental observation of the localized hole polaron in perovskites should advance the fundamental comprehension of charge carrier behavior within LHPs and their related devices.
Published: 2020
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2. Aqueous Li-ion battery enabled by halogen conversion–intercalation chemistry in graphite

Author: Oleg Borodin, Chunsheng Wang, Xujie Lü, Tingting Qing, Ji Chen, Kang Xu, Chongyin Yang, Singyuk Hou, Cheng-Jun Sun, Travis P. Pollard, Xiao Ji, Cunming Liu, Yingqi Wang, Qi Liu, and Yang Ren
Subjects: Battery (electricity), Multidisciplinary, Intercalation (chemistry), Inorganic chemistry, chemistry.chemical_element, 02 engineering and technology, Electrolyte, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Graphite intercalation compound, chemistry.chemical_compound, chemistry, Electrode, Lithium, Graphite, 0210 nano-technology, Electrochemical window
Abstract: The use of 'water-in-salt' electrolytes has considerably expanded the electrochemical window of aqueous lithium-ion batteries to 3 to 4 volts, making it possible to couple high-voltage cathodes with low-potential graphite anodes1-4. However, the limited lithium intercalation capacities (less than 200 milliampere-hours per gram) of typical transition-metal-oxide cathodes5,6 preclude higher energy densities. Partial7,8 or exclusive9 anionic redox reactions may achieve higher capacity, but at the expense of reversibility. Here we report a halogen conversion-intercalation chemistry in graphite that produces composite electrodes with a capacity of 243 milliampere-hours per gram (for the total weight of the electrode) at an average potential of 4.2 volts versus Li/Li+. Experimental characterization and modelling attribute this high specific capacity to a densely packed stage-I graphite intercalation compound, C3.5[Br0.5Cl0.5], which can form reversibly in water-in-bisalt electrolyte. By coupling this cathode with a passivated graphite anode, we create a 4-volt-class aqueous Li-ion full cell with an energy density of 460 watt-hours per kilogram of total composite electrode and about 100 per cent Coulombic efficiency. This anion conversion-intercalation mechanism combines the high energy densities of the conversion reactions, the excellent reversibility of the intercalation mechanism and the improved safety of aqueous batteries.
Published: 2019
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3. The coordination behaviour of cuI photosensitizers bearing multidentate ligands investigated by X‐ray absorption spectroscopy

Author: Wolfgang Frey, Marie-Ann Schmid, Martin Rentschler, Xiaoyi Zhang, Michael Karnahl, Sirma Iglesias, Dooshaye Moonshiram, Stefanie Tschierlei, and Cunming Liu
Subjects: DDC 540 / Chemistry & allied sciences, Denticity, copper photosensitizers, Absorption spectroscopy, 010402 general chemistry, 01 natural sciences, Catalysis, Photosensitizers, chemistry.chemical_compound, Röntgenabsorptionsspektroskopie, Homoleptic, Absorption (electromagnetic radiation), Mehrzähniger Ligand, Density functionals, X-ray absorption spectroscopy, Full Paper, 010405 organic chemistry, Organic Chemistry, General Chemistry, Full Papers, 0104 chemical sciences, Crystallography, chemistry, Excited state, excited state structures, ddc:540, density functional calculations, X-ray spectroscopy, Density functional theory, multidentate ligands, Cyclic voltammetry
Abstract: Excited with copper: A multi‐method approach was used to determine the ground and excited state structures of a series of CuI photosensitizers containing additional donor moieties. For the first time a pentacoordinated copper center, corresponding to a 4+1‐fold coordination mode, was found in the excited state of the homoleptic complexes. A systematic series of four novel homo‐ and heteroleptic CuI photosensitizers based on tetradentate 1,10‐phenanthroline ligands of the type X^N^N^X containing two additional donor moieties in the 2,9‐position (X=SMe or OMe) were designed. Their solid‐state structures were assessed by X‐ray diffraction. Cyclic voltammetry, UV‐vis absorption, emission and X‐ray absorption spectroscopy were then used to determine their electrochemical, photophysical and structural features in solution. Following, time‐resolved X‐ray absorption spectroscopy in the picosecond time scale, coupled with time‐dependent density functional theory calculations, provided in‐depth information on the excited state electron configurations. For the first time, a significant shortening of the Cu−X distance and a change in the coordination mode to a pentacoordinated geometry is shown in the excited states of the two homoleptic complexes. These findings are important with respect to a precise understanding of the excited state structures and a further stabilization of this type of photosensitizers., publishedVersion
Published: 2020

4. Critical Role of Organic Spacers for Bright 2D Layered Perovskites Light‐Emitting Diodes

Author: Xuedan Ma, Xiaoyi Zhang, Eli D. Kinigstein, Sergei Tretiak, Ming-Xing Li, Mircea Cotlet, Cunming Liu, Hsinhan Tsai, and Wanyi Nie
Subjects: charge localization, Photoluminescence, Materials science, Absorption spectroscopy, General Chemical Engineering, General Physics and Astronomy, Medicine (miscellaneous), 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Biochemistry, Genetics and Molecular Biology (miscellaneous), law.invention, law, General Materials Science, Spontaneous emission, lcsh:Science, Alkyl, Diode, chemistry.chemical_classification, business.industry, Communication, General Engineering, X‐ray absorption spectroscopy, 021001 nanoscience & nanotechnology, Communications, 0104 chemical sciences, Semiconductor, chemistry, light‐emitting diodes, Optoelectronics, Quantum efficiency, Ruddlesden–Popper layered perovskites, lcsh:Q, 0210 nano-technology, business, Light-emitting diode
Abstract: Light‐emitting diodes (LEDs) made with quasi‐2D/3D and layered perovskites have undergone an unprecedented surge as their external quantum efficiency (EQE) is rapidly approaching other lighting technologies. Manipulating the charge recombination pathway in semiconductors is highly desirable for improving the device performance. This study reports high‐performance layered perovskites LEDs with benzyl ring as spacer where radiative recombination lifetime is longer, compared with much shorter alkyl chain spacer yields. Based on detailed optical and X‐ray absorption spectroscopy measurements, direct signature of charges localization is observed near the band edge in exchange with the shallow traps in benzyl organics containing layered perovskites. As a result, it boosts the photoluminescence intensity by 7.4 times compared to that made with the alkyl organics. As a demonstration, a bright LED made with the benzyl organics with current efficiency of 23.46 ± 1.52 cd A−1 is shown when the device emits at a high brightness of 6.6 ± 0.93 × 104 cd m−2. The average EQE is 9.2% ± 1.43%, two orders of magnitude higher than the device made with alkyl organics. The study suggests that the choices of organic spacers provide a path toward the manipulation of charge recombination, essential for efficient optoelectronic device fabrications., The charge recombination pathways in layered perovskites are closely related to the choice of the organic spacers. Using phenylethylamine as organic spacer greatly extends the charge recombination lifetime by localizing the hole near the band edge. Efficient Ruddlesden–Popper layered perovskites light emitting‐diodes are thus demonstrated.
Published: 2020

5. Tracking the Light-Induced Excited-State Dynamics and Structural Configurations of an Extraordinarily Long-Lived Metastable State at Room Temperature

Author: Xiaoyi Zhang, David Écija, Larry Lüer, Esther Carrasco, Abasi Abudulimu, Antonio Picón, Sirma Iglesias, José Sánchez Costa, Arturo Gamonal, Dooshaye Moonshiram, and Cunming Liu
Subjects: 010405 organic chemistry, Chemistry, Organic Chemistry, Relaxation (NMR), General Chemistry, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Chemical physics, Spin crossover, Excited state, Metastability, Ultrafast laser spectroscopy, ddc:540, Density functional theory, Ground state, Spectroscopy
Abstract: Chemistry - a European journal 26(47), 10801 - 10810 (2020). doi:10.1002/chem.202001393, Time��resolved X��ray (Tr��XAS) and optical transient absorption (OTA) spectroscopy on the pico��microsecond timescale coupled with density functional theory calculations are applied to study the light��induced spin crossover processes of a Fe��based macrocyclic complex in solution. Tr��XAS analysis after light illumination shows the formation of a seven��coordinated high��spin quintet metastable state, which relaxes to a six��coordinated high��spin configuration before decaying to the ground state. Kinetic analysis of the macrocyclic complex reveals an unprecedented long��lived decay lifetime of approximately 42.6 ��s. Comparative studies with a non��macrocyclic counterpart illustrate a significantly shortened approximately 568��fold decay lifetime of about 75 ns, and highlight the importance of the ligand arrangement in stabilizing the reactivity of the excited state. Lastly, OTA analysis shows the seven��coordinated high��spin state to be formed within approximately 6.2 ps. These findings provide a complete understanding of the spin crossover reaction and relaxation pathways of the macrocyclic complex, and reveal the importance of a flexible coordination environment for their rational design., Published by Wiley-VCH, Weinheim
Published: 2020
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6. Cover Feature: Spectroscopic Characterisation of a Bio‐Inspired Ni‐Based Proton Reduction Catalyst Bearing a Pentadentate N 2 S 3 Ligand with Improved Photocatalytic Activity

Author: Annamaria Quaranta, Régis Guillot, Ally Aukauloo, Zakaria Halime, Philipp Gotico, Cunming Liu, Dooshaye Moonshiram, Xiaoyi Zhang, Winfried Leibl, Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Instituto Madrileno de Estudios Avanzados en Nanociencia (IMDEA), Argonne National Laboratory [Lemont] (ANL), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), and Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Subjects: Reaction mechanism, X-ray absorption spectroscopy, Proton, 010405 organic chemistry, Ligand, Organic Chemistry, chemistry.chemical_element, General Chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, 010402 general chemistry, 01 natural sciences, Combinatorial chemistry, Catalysis, 0104 chemical sciences, Nickel, chemistry, Photocatalysis, [CHIM.COOR]Chemical Sciences/Coordination chemistry
Abstract: International audience; Inspired by the sulphur-rich environment found in active hydrogenase enzymes, a novel Ni-based proton reduction catalyst with pentadentate N2S3 ligand was synthesized. When coupled with a [Ru(bpy)3] 2+ photosensitiser and ascorbate as electron donor in a 1:1 mixture of dimethylacetamide and aqueous ascorbic acid/ascorbate buffer, the catalyst showed improved photocatalytic activity compared to a homologous counterpart with a tetradentate N2S2 ligand. The mechanistic pathway of photo-induced hydrogen evolution was comprehensively analysed through optical transient absorption (OTA) and time-resolved X-ray absorption spectroscopy (tr-XAS) revealing important electronic and structural changes in the catalytic system during photo-irradiation. It was found that the Ni (II) catalyst undergoes a photo-induced metal-centred reduction to form a Ni (I) intermediate bearing a distorted square bipyramidal geometry. Further kinetic analyses pointed out differences in charge separation dynamics between the pentadentate and tetradentate homologues.
Published: 2020
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7. 2D Covalent Organic Frameworks as Intrinsic Photocatalysts for Visible Light-Driven CO2 Reduction

Author: Jier Huang, Ive Hermans, Peilei He, Xiaoyi Zhang, Wenhui Hu, Sizhuo Yang, Jian Zhang, Brian Pattengale, Xin Zhang, Cunming Liu, and Melissa C. Cendejas
Subjects: Absorption spectroscopy, Diffuse reflectance infrared fourier transform, Chemistry, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Rate-determining step, Photochemistry, Solar fuel, 01 natural sciences, Biochemistry, Catalysis, 0104 chemical sciences, Colloid and Surface Chemistry, Covalent bond, 0210 nano-technology, Visible spectrum, Covalent organic framework
Abstract: Covalent organic framework (COF) represents an emerging class of porous materials that have exhibited great potential in various applications, particularly in catalysis. In this work, we report a newly designed 2D COF with incorporated Re complex, which exhibits intrinsic light absorption and charge separation (CS) properties. We show that this hybrid catalyst can efficiently reduce CO2 to form CO under visible light illumination with high electivity (98%) and better activity than its homogeneous Re counterpart. More importantly, using advanced transient optical and X-ray absorption spectroscopy and in situ diffuse reflectance spectroscopy, we unraveled three key intermediates that are responsible for CS, the induction period, and rate limiting step in catalysis. This work not only demonstrates the potential of COFs as next generation photocatalysts for solar fuel conversion but also provide unprecedented insight into the mechanistic origins for light-driven CO2 reduction.
Published: 2018
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8. Direct Observation of Node-to-Node Communication in Zeolitic Imidazolate Frameworks

Author: Sizhuo Yang, John F. Berry, Wenhui Hu, Daniel J. SantaLucia, Brian Pattengale, Jier Huang, Xiaoyi Zhang, and Cunming Liu
Subjects: Absorption spectroscopy, Chemistry, Node (networking), Direct observation, Charge (physics), Nanotechnology, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Biochemistry, Transport Pathway, Catalysis, 0104 chemical sciences, Colloid and Surface Chemistry, Excited state, 0210 nano-technology, Ground state, Zeolitic imidazolate framework
Abstract: Zeolitic imidazolate frameworks (ZIFs) with open-shell transition metal nodes represent a promising class of highly ordered light harvesting antennas for photoenergy applications. However, their charge transport properties within the framework, the key criterion to achieve efficient photoenergy conversion, are not yet explored. Herein, we report the first direct evidence of a charge transport pathway through node-to-node communication in both ground state and excited state ZIFs using the combination of paramagnetic susceptibility measurements and time-resolved optical and X-ray absorption spectroscopy. These findings provide unprecedented new insights into the photoactivity and charge transport nature of ZIF frameworks, paving the way for their novel application as light harvesting arrays in diverse photoenergy conversion devices.
Published: 2018
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9. Direct Structural and Chemical Characterization of the Photolytic Intermediates of Methylcobalamin Using Time-Resolved X-ray Absorption Spectroscopy

Author: Andrew Chizmeshya, Gerdenis Kodis, John C. H. Spence, Xiaoyi Zhang, Cunming Liu, Qingyu Kong, Ganesh Subramanian, and Uwe Weierstall
Subjects: X-ray absorption spectroscopy, Materials science, Absorption spectroscopy, Corrin, Methyl radical, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, 0104 chemical sciences, Photoexcitation, chemistry.chemical_compound, chemistry, Picosecond, General Materials Science, Physical and Theoretical Chemistry, 0210 nano-technology, Ground state, Bond cleavage
Abstract: Cobalt–carbon bond cleavage is crucial to most natural and synthetic applications of the cobalamin class of compounds, and here we present the first direct electronic and geometric structural characteristics of intermediates formed following photoexcitation of methylcobalamin (MeCbl) using time-resolved X-ray absorption spectroscopy (XAS). We catch transients corresponding to two intermediates, in the hundreds of picoseconds and a few microseconds. Highlights of the picosecond intermediate, which is reduced in comparison to the ground state, are elongation of the upper axial Co–C bond and relaxation of the corrin ring. This is not so with the recombining photocleaved products captured at a few microseconds, where the Co–C bond almost (yet not entirely) reverts to its ground state configuration and a substantially elongated lower axial Co–NIm bond is observed. The reduced cobalt site here confirms formation of methyl radical as the photoproduct.
Published: 2018
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10. Elucidating Charge Separation Dynamics in a Hybrid Metal–Organic Framework Photocatalyst for Light-Driven H2 Evolution

Author: Cunming Liu, Donghua Fan, Brian Pattengale, Wenhui Hu, Xiaoyi Zhang, Jier Huang, and Sizhuo Yang
Subjects: Materials science, Chemical substance, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Artificial photosynthesis, Electron transfer, General Energy, Chemical engineering, Ultrafast laser spectroscopy, Photocatalysis, Metal-organic framework, Physical and Theoretical Chemistry, 0210 nano-technology, Science, technology and society, Spectroscopy
Abstract: Metal–organic frameworks (MOFs) have emerged as novel scaffolds for artificial photosynthesis due to their unique capability in incorporating homogeneous photosensitizer and catalyst to their robust heterogeneous matrix. In this work, we report the charge separation dynamics between molecular Ru-photosensitizer and Pt-catalyst, both of which were successfully incorporated into a Zr-MOF that demonstrates excellent activity and stability for light-driven H2 generation from water. Using optical transient absorption (OTA) spectroscopy, we show that charge separation in this hybrid MOF occurs via electron transfer (ET) from Ru-photosensitizer to Pt-catalyst. Using Pt L3-edge X-ray transient absorption (XTA) spectroscopy, we observed the intermediate reduced Pt site, directly confirming the formation of charge separated state due to ET from Ru-photosensitizer and unraveling their key roles in photocatalysis.
Published: 2018
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11. Defect engineering of mesoporous nickel ferrite and its application for highly enhanced water oxidation catalysis

Author: Pingwu Du, Qiudi Yue, Yangyang Wan, Cunming Liu, Xiaojun Wu, and Xiaoyi Zhang
Subjects: Tafel equation, Band gap, Chemistry, Spinel, Oxygen evolution, 02 engineering and technology, Overpotential, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, 0104 chemical sciences, Chemical engineering, engineering, Water splitting, Physical and Theoretical Chemistry, 0210 nano-technology, Mesoporous material
Abstract: Spinel nickel ferrite (NiFe2O4) emerges as a promising low-cost catalyst for water splitting but it usually shows low catalytic activity because of its limited number of active sites and poor conductivity. For the first time, herein we have successfully overcome its weaknesses using defect engineering approach by creating oxygen vacancies in NiFe2O4. The existence of oxygen vacancy not only shifts up the d-band center, strengthens the adsorption of H2O, and thus provides more active catalytic sites, but also tunes the electron configuration and creates massive number of defective donor states in the band gap to facilitate charge transfer processes. The optimal defective catalyst showed significantly enhanced catalytic OER performance with an OER overpotential as low as 0.35 V at 10 mA cm−2 and a Tafel slope of only ∼40 mV dec−1. Moreover, the impressive specific mass and area current density of 17.5 A g−1 and 0.106 A m−2 at 1.58 V vs. RHE have been achieved, which are ∼23 and ∼36 times higher than that of defect-free counterpart, respectively.
Published: 2018
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12. Unravelling the Correlation of Electronic Structure and Carrier Dynamics in CuInS2 Nanoparticles

Author: Sizhuo Yang, John Ludwig, Wenhui Hu, Xiaobing Zuo, Xiaoyi Zhang, Brian Pattengale, Cunming Liu, and Jier Huang
Subjects: X-ray absorption spectroscopy, Materials science, Absorption spectroscopy, technology, industry, and agriculture, Nucleation, Nanoparticle, 02 engineering and technology, Electron, Electronic structure, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, General Energy, Ultrafast laser spectroscopy, Physical and Theoretical Chemistry, 0210 nano-technology, Spectroscopy
Abstract: In this work, we report the direct correlation of photoinduced carrier dynamics and electronic structure of CuInS2 (CIS) nanoparticles (NPs) using the combination of multiple spectroscopic techniques including steady-state X-ray absorption spectroscopy (XAS), optical transient absorption (OTA), and X-ray transient (XTA) absorption spectroscopy. XAS results show that CIS NPs contain a large amount of surface Cu atoms with ≪four-coordination, which is more severe in CIS NPs with shorter nucleation times, indicating the presence of more Cu defect states in CIS NPs with smaller size particles. Using the combination of OTA and XTA spectroscopy, we show that electrons are trapped at states with mainly In or S nature while holes are trapped in sites characteristic of Cu. While there is no direct correlation of ultrafast trapping dynamics with NP nucleation time, charge recombination is significantly inhibited in CIS NPs with larger particles. These results suggest the key roles that Cu defect sites play in carri...
Published: 2017
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13. Long-Lived Photoinduced Charge Separation in a Trinuclear Iron-μ3-oxo-based Metal–Organic Framework

Author: Pavel Kucheryavy, Lauren Hanna, Jenny V. Lockard, Cunming Liu, and Xiaoyi Zhang
Subjects: Absorption spectroscopy, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, General Energy, chemistry, Photoinduced charge separation, Excited state, Ultrafast laser spectroscopy, Metal-organic framework, Carboxylate, Trimesic acid, Physical and Theoretical Chemistry, 0210 nano-technology, Spectroscopy
Abstract: The presence of long-lived charge-separated excited states in metal–organic frameworks (MOFs) can enhance their photocatalytic activity by decreasing the probability that photogenerated electrons and holes recombine before accessing adsorbed reactants. Detecting these charge-separated states via optical transient absorption, however, can be challenging when they lack definitive optical signatures. We investigate the long-lived excited state of a MOF with such vague optical properties, MIL-100(Fe), composed of Fe3-μ3-oxo clusters and trimesic acid linkers, using Fe K-edge X-ray transient absorption (XTA) spectroscopy to unambiguously determine its ligand-to-metal charge-transfer character. Spectra measured at time delays up to 3.6 μs confirm the long-lived nature of the charge-separated excited state. Several trinuclear iron μ3-oxo carboxylate complexes, which model the trinuclear cores of the MOF structure, are measured for comparison using both steady-state X-ray absorption spectroscopy and XTA to furthe...
Published: 2017
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14. Stability of periodic steady-state solutions to a non-isentropic Euler–Poisson system

Author: Cunming Liu, Yue-Jun Peng, and Université de Clermont-Ferrand
Subjects: Isentropic process, Applied Mathematics, 010102 general mathematics, Mathematical analysis, Perturbation (astronomy), Dissipation, 01 natural sciences, Euler equations, 010101 applied mathematics, symbols.namesake, Exponential stability, symbols, Euler's formula, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], 0101 mathematics, Poisson system, ComputingMilieux_MISCELLANEOUS, Analysis, Mathematics, Doping profile
Abstract: We study the stability of periodic smooth solutions near non-constant steady-states for a non-isentropic Euler–Poisson system without temperature damping term. The system arises in the theory of semiconductors for which the doping profile is a given smooth function. In this stability problem, there are no special restrictions on the size of the doping profile, but only on the size of the perturbation. We prove that small perturbations of periodic steady-states are exponentially stable for large time. For this purpose, we introduce new variables and choose a non-diagonal symmetrizer of the full Euler equations to recover dissipation estimates. This also allows to make the proof of the stability result very simple and concise.
Published: 2017
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15. Global convergence of the Euler‐Poisson system for ion dynamics

Author: Yue-Jun Peng, Cunming Liu, and Université Clermont Auvergne (UCA)
Subjects: General Mathematics, 010102 general mathematics, Dynamics (mechanics), General Engineering, 01 natural sciences, Ion, 010101 applied mathematics, symbols.namesake, Convergence (routing), Euler's formula, symbols, Applied mathematics, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], 0101 mathematics, Poisson system, ComputingMilieux_MISCELLANEOUS, Mathematics
Abstract: International audience
Published: 2019
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16. Asynchronous Photoexcited Electronic and Structural Relaxation in Lead-Free Perovskites

Author: Xiaoyi Zhang, Huifang Geng, Elif Ertekin, David J. Gosztola, Cunming Liu, Sizhuo Yang, Ke-Li Han, Qingyu Kong, Taishan Zhu, Bin Yang, Kaibo Zheng, Sophie E. Canton, Yingqi Wang, and Jier Huang
Subjects: 01.03. Fizikai tudományok, business.industry, Chemistry, General Chemistry, Crystal structure, 010402 general chemistry, Polaron, 01 natural sciences, Biochemistry, Catalysis, 0104 chemical sciences, Colloid and Surface Chemistry, Semiconductor, Chemical physics, Lattice (order), Ultrafast laser spectroscopy, Charge carrier, business, Spectroscopy, Perovskite (structure)
Abstract: Vacancy-ordered lead-free perovskites with more-stable crystalline structures have been intensively explored as the alternatives for resolving the toxic and long-term stability issues of lead halide perovskites (LHPs). The dispersive energy bands produced by the closely packed halide octahedral sublattice in these perovskites are meanwhile anticipated to facility the mobility of charge carriers. However, these perovskites suffer from unexpectedly poor charge carrier transport. To tackle this issue, we have employed the ultrafast, elemental-specific X-ray transient absorption (XTA) spectroscopy to directly probe the photoexcited electronic and structural dynamics of a prototypical vacancy-ordered lead-free perovskite (Cs3Bi2Br9). We have discovered that the photogenerated holes quickly self-trapped at Br centers, simultaneously distorting the local lattice structure, likely forming small polarons in the configuration of V-k center (Br-2(-) dimer). More significantly, we have found a surprisingly long-lived, structural distorted state with a lifetime of, similar to 59 mu s, which is similar to 3 orders of magnitude slower than that of the charge carrier recombination. Such long-lived structural distortion may produce a transient "background" under continuous light illumination, influencing the charge carrier transport along the lattice framework.
Published: 2019
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17. Spectroscopic Characterization of Bio-inspired Ni-based Proton Reduction Catalyst Bearing Pentadentate N2S3 Ligand with Improved Photocatalytic Activity

Author: Winfried Leibl, Annamaria Quaranta, Dooshaye Moonshiram, Ally Aukauloo, Cunming Liu, Xiaoyi Zhang, Régis Guillot, Zakaria Halime, Philipp Gotico, Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire Bioénergétique Membranaire et Stress (LBMS), Département Biochimie, Biophysique et Biologie Structurale (B3S), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Photocatalyse et Biohydrogène (LPB)
Subjects: X-ray absorption spectroscopy, Absorption spectroscopy, 010405 organic chemistry, Chemistry, Ligand, [SDV]Life Sciences [q-bio], Organic Chemistry, Electron donor, General Chemistry, 010402 general chemistry, Photochemistry, Ascorbic acid, 01 natural sciences, Catalysis, 0104 chemical sciences, Bipyridine, chemistry.chemical_compound, Photocatalysis, Optical Transient Absorption, Time-Resolved X-ray Absorption Spectroscopy, Bio-inspired Catalysts, Hydrogen
Abstract: International audience; Inspired by the sulphur-rich environment found in active hydrogenase enzymes, a novel Ni-based proton reduction catalyst with pentadentate N 2 S 3 ligand was synthesized. When coupled with a [Ru(bpy) 3 ] 2+ photosensitiser and ascorbate as electron donor in a 1:1 mixture of dimethylacetamide and aqueous ascorbic acid/ascorbate buffer, the catalyst showed improved photocatalytic activity compared to a homologous counterpart with a tetradentate N 2 S 2 ligand. The mechanistic pathway of photo-induced hydrogen evolution was comprehensively analysed through optical transient absorption (OTA) and time-resolved X-ray absorption spectroscopy (tr-XAS) revealing important electronic and structural changes in the catalytic system during photo-irradiation. It was found that the Ni (II) catalyst undergoes a photo-induced metal-centred reduction to form a Ni (I) intermediate bearing a distorted square bipyramidal geometry. Further kinetic analyses pointed out differences in charge separation dynamics between the pentadentate and tetradentate homologues.
Published: 2019
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18. Estimating the effective pressure from nanosecond laser-induced breakdown in water

Author: Haiying Zhao, Fabing Li, Ying Wang, Zhiwei Men, Chenglin Sun, Cunming Liu, and Xin Xu
Subjects: Empirical equations, Materials science, business.industry, Analytical chemistry, 02 engineering and technology, Laser pumping, Nanosecond, 021001 nanoscience & nanotechnology, 01 natural sciences, Atomic and Molecular Physics, and Optics, Degree (temperature), 010309 optics, symbols.namesake, Optics, 0103 physical sciences, symbols, Transient (oscillation), Nanosecond laser, 0210 nano-technology, Raman spectroscopy, business, Raman scattering
Abstract: Nanosecond laser-induced breakdown (LIB) in liquids (e.g., water) can produce dynamic high pressure and high temperature. However, since high pressure needs to negate the effect of high temperature to some degree, it is only partially effective. As a result, it is difficult to directly measure the effective pressure due to the transient and complex LIB process. Here, we presented a simple method based on Raman spectroscopy to indirectly determine the effective pressure caused by LIB in liquid pure H 2 O and low concentration H 2 O − H 2 O 2 mixtures. By comparing the Raman shifts of the ice-VII mode for pure H 2 O and H 2 O − H 2 O 2 mixtures under laser pumping and static high pressure, the LIB effective pressure can be first estimated. The empirical equation was then derived base on the correlation of the LIB effective pressure to ice-VII-point stimulated Raman scattering thresholds for pure and mixture water solutions, which can be used to estimate the LIB effective pressures for other different mixture water solutions with the uncertainty of 0.14–0.25 Gpa. Hopefully, our study here would advance the measurements of effective pressure in the LIB process.
Published: 2021
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19. Convergence of a non-isentropic Euler–Poisson system for all time

Author: Cunming Liu, Yue-Jun Peng, and Université Clermont Auvergne (UCA)
Subjects: Applied Mathematics, General Mathematics, 010102 general mathematics, Mathematical analysis, Energy–momentum relation, Dissipation, 01 natural sciences, 010101 applied mathematics, symbols.namesake, Classical mechanics, Compact space, Convergence (routing), Dissipative system, Euler's formula, symbols, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], Limit (mathematics), 0101 mathematics, Constant (mathematics), ComputingMilieux_MISCELLANEOUS, Mathematics
Abstract: We consider periodic smooth solutions for a non-isentropic Euler–Poisson system with small parameters, in which the momentum and energy equations are partially dissipative. When initial data are close to constant equilibrium states, we prove the global-in-time convergence of the system as parameters go to zero. The limit systems are incompressible Euler equations with dissipation, the drift-diffusion system and the energy-transport system. The proof of the results is based on compactness arguments and uniform energy estimates with respect to the time and the parameters.
Published: 2018
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20. Elucidating the Nature of the Excited State of a Heteroleptic Copper Photosensitizer by using Time-Resolved X-ray Absorption Spectroscopy

Author: Xiaoyi Zhang, Pablo Garrido-Barros, Antoni Llobet, Cunming Liu, Dooshaye Moonshiram, Michael Karnahl, Carolina Gimbert-Suriñach, and Antonio Picón
Subjects: X-ray absorption spectroscopy, Quenching (fluorescence), Extended X-ray absorption fine structure, Absorption spectroscopy, 010405 organic chemistry, Xantphos, Organic Chemistry, General Chemistry, 010402 general chemistry, Photochemistry, 01 natural sciences, Catalysis, XANES, 0104 chemical sciences, Electron transfer, chemistry.chemical_compound, chemistry, Excited state
Abstract: We report the light-induced electronic and geometric changes taking place within a heteroleptic CuI photosensitizer, namely [(xant)Cu(Me2 phenPh2 )]PF6 (xant=xantphos, Me2 phenPh2 =bathocuproine), by time-resolved X-ray absorption spectroscopy in the ps-μs time regime. Time-resolved X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analysis enabled the elucidation of the electronic and structural configuration of the copper center in the excited state as well as its decay dynamics in different solvent conditions with and without triethylamine acting as a sacrificial electron donor. A three-fold decrease in the decay lifetime of the excited state is observed in the presence of triethylamine, showing the feasibility of the reductive quenching pathway in the latter case. A prominent pre-edge feature is observed in the XANES spectrum of the excited state upon metal to charge ligand transfer transition, showing an increased hybridization of the 3d states with the ligand p orbitals in the tetrahedron around the Cu center. EXAFS and density functional theory illustrate a significant shortening of the Cu-N and an elongation of the Cu-P bonds together with a decrease in the torsional angle between the xantphos and bathocuproine ligand. This study provides mechanistic time-resolved understanding for the development of improved heteroleptic CuI photosensitizers, which can be used for the light-driven production of hydrogen from water.
Published: 2018
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21. Probing the Impact of Solvation on Photoexcited Spin Crossover Complexes with High-Precision X-ray Transient Absorption Spectroscopy

Author: Latévi Max Lawson Daku, Jianxin Zhang, David J. Gosztola, Xiaoyi Zhang, Cunming Liu, and Sophie E. Canton
Subjects: 01.03. Fizikai tudományok, Absorption spectroscopy, Chemistry, Solvation, Analytical chemistry, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Biochemistry, Molecular physics, Catalysis, Spectral line, 0104 chemical sciences, Colloid and Surface Chemistry, Transition metal, Spin crossover, Ultrafast laser spectroscopy, 0210 nano-technology, Spin (physics), Spectroscopy
Abstract: Investigating the photoinduced electronic and structural response of bistable molecular building blocks incorporating transition metals in solution phase constitutes a necessary stepping stone for steering their properties toward applications and performance optimizations. This work presents a detailed X-ray transient absorption (XTA) spectroscopy study of a prototypical spin crossover (SCO) complex [FeII(mbpy)3]2+ (where mbpy = 4,4′-dimethyl-2,2′-bipyridine) with an [FeIIN6] first coordination shell in water (H2O) and acetonitrile (CH3CN). The unprecedented data quality of the XTA spectra together with the direct fitting of the difference spectra in k space using a large number of scattering paths enables resolving the subtle difference in the photoexcited structures of an FeII complex in two solvents for the first time. Compared to the low spin (LS) 1A1 state, the average Fe–N bond elongations for the photoinduced high spin (HS) 5T2 state are found to be 0.181 ± 0.003 A in H2O and 0.199 ± 0.003 A in CH3...
Published: 2017

22. Stability of periodic steady-state solutions to a non-isentropic Euler–Maxwell system

Author: Yue-Jun Peng, Cunming Liu, and Université Clermont Auvergne (UCA)
Subjects: Steady state, Applied Mathematics, General Mathematics, media_common.quotation_subject, 010102 general mathematics, Mathematical analysis, General Physics and Astronomy, Dissipation, Infinity, 01 natural sciences, Stability (probability), Domain (mathematical analysis), Euler equations, 010101 applied mathematics, symbols.namesake, symbols, Euler's formula, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], 0101 mathematics, Diffusion (business), ComputingMilieux_MISCELLANEOUS, media_common, Mathematics
Abstract: This paper is concerned with a stability problem in a periodic domain for a non-isentropic Euler–Maxwell system without temperature diffusion term. This system is used to describe the dynamics of electrons in magnetized plasmas when the ion density is a given smooth function which can be large. When the initial data are close to the steady states of the system, we show the global existence of smooth solutions which converge toward the steady states as the time tends to infinity. We make a change of unknown variables and choose a non-diagonal symmetrizer of the full Euler equations to get the dissipation estimates. We also adopt an induction argument on the order of derivatives of solutions in energy estimates to get the stability result.
Published: 2017
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23. Ultrafast dynamics of colloidal semiconductor nanocrystals relevant to solar fuels production

Author: Rebeckah Burke, Fen Qiu, Nicole M. B. Cogan, Todd D. Krauss, and Cunming Liu
Subjects: Materials science, Absorption spectroscopy, Nanoparticle, Nanotechnology, Electron donor, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Artificial photosynthesis, chemistry.chemical_compound, Electron transfer, chemistry, Quantum dot, Ultrafast laser spectroscopy, Photocatalysis, 0210 nano-technology
Abstract: Artificial conversion of sunlight to chemical fuels has attracted attention for several decades as a potential source of clean, renewable energy. We recently found that CdSe quantum dots (QDs) and simple aqueous Ni2+ salts in the presence of a sacrificial electron donor form a highly efficient, active, and robust system for photochemical reduction of protons to molecular hydrogen. Ultrafast transient absorption spectroscopy studies of electron transfer (ET) processes from the QDs to the Ni catalysts reveal extremely fast ET, and provide a fundamental explanation for the exceptional photocatalytic H2 activity. Additionally, by studying H2 production of the Ni catalyst with CdSe/CdS nanoparticles of various structures, it was determined that surface charge density plays an important role in charge transfer and ultimately H2 production activity.
Published: 2017
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24. Precise Measurement of the e+e−→π+π−J/ψ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV

Author: Teng Li, B. S. Zou, D. Y. Liu, J. P. Dai, Jianmin Dong, Yong Ban, Y. D. Wang, J. F. Qiu, S. Q. Zhang, C. F. Qiao, Z. Ning, K. Li, K. Zhang, J. Lange, Q. P. Ji, Lei Li, W. X. Gong, Y. J. Mao, G. Cibinetto, F. C. Ma, M. Maggiora, Wei Li, R. G. Ping, J. V. Bennett, T. Holtmann, J. S. Yu, S. S. Fang, Xuejun Wang, Hongji Yang, Kejun Zhu, Q. J. Xu, Zhiyong Zhang, A. Sarantsev, X. H. Sun, Guangshun Huang, L. Yan, Q. Gao, Lei Zhao, Q. An, H. R. Qi, X. C. Lou, Zhen Wang, Yiming Zhang, F. A. Harris, J. Y. Zhang, Yuehong Xie, A. Dbeyssi, J. Min, Z. J. Xiao, M. H. Gu, X. D. Ruan, L. L. Ma, H. Loehner, L. Gong, Ming-Xing Luo, X. N. Ma, A. Zhemchugov, L. S. Wang, Y. T. Liang, Qi Liu, X. D. Chen, Zhiqing Liu, X. L. Ji, Z. B. Li, M. Kavatsyuk, Bibo Ke, Yuekun Heng, E. H. Thorndike, S. P. Wen, C. D. Fu, G. Rong, Wolfgang Kuhn, Serkant Ali Cetin, H. Leithoff, P. F. Duan, H. H. Zhang, Bingxuan Liu, S. Jin, Xingtao Huang, L. Lavezzi, B. L. Wang, M. N. Achasov, Giulietto Felici, Xiaozhong Huang, X. B. Ji, Mingshui Chen, A. Amoroso, W. M. Song, Sai-Juan Chen, S. Pacetti, Y. H. Zheng, Fang Liu, Y. F. Wang, H. Muramatsu, Hao Liang, M. Wolke, Z. Wu, O. B. Kolcu, Jian Zhuang, Y. B. Li, A. Denig, Jin Li, Qun Ouyang, Jian Fang, S. H. Zhu, X. H. Mo, W. P. Wang, Yingchun Zhu, Orhan Cakir, M. Lara, P. Kiese, Siyuan Sun, M. Shao, A. Q. Guo, Andrzej Kupsc, C. Leng, Xu Zhou, H. B. Li, Shou-hua Zhu, M. Tiemens, X. Q. Hao, R. Kliemt, H. J. Li, M. Ye, L. Zotti, L. Zhang, Jiajun Zheng, Y. T. Gu, Zhi Zeng, N. Yu. Muchnoi, H. Cai, D. X. Lin, Y. H. Guan, R. A. Briere, A. Julin, Kai Wang, Y. Xia, F. Y. Li, S. L. Olsen, Z. Liu, B. Zheng, Zheng Wang, Guo-Ming Chen, J. Z. Bai, F. Feldbauer, Shujun Zhao, H. L. Dai, Z. T. Sun, C. P. Shen, Yong Liu, D. Bettoni, D. Y. Wang, Y. Zeng, R. Farinelli, G. F. Xu, Xuan Zhang, Jie Liu, H. Y. Sheng, Wang Zengqiang, Niu Xiaoyang, Z. Jiao, C. L. Luo, Cen Zhang, S. X. Du, Y. P. Lu, Y. N. Zhang, Fabrizio Bianchi, Zhengguo Zhao, Michela Greco, Guangyu Zhao, J. W. Zhao, Jie Zhao, S. Z. Chen, Changjian Tang, S. Ahmed, Y. X. Yang, Jie Zhang, Jia Xu, H. X. Yang, V. Prasad, L. Y. Dong, M. G. Zhao, Xianglei Zhu, R. Baldini Ferroli, F. H. Heinsius, J. F. Chang, X. K. Zhou, Wenbiao Yan, Ming Qi, Xian Gao, P. Wang, S. Marcello, J.H. Yin, G. F. Cao, A. Yuncu, D. M. Li, Haiwen Liu, J. F. Sun, Yongke Zhao, R. Poling, B. Zhong, L. B. Guo, D. H. Wei, E. Fioravanti, Y. G. Xie, Jia-ju Zhang, Yunpeng Lu, X. P. Xu, K. Schoenning, Q. Y. Li, Jiemin Li, T. Luo, Y. Zhang, B. Wang, Y. Z. Sun, Junguang Lu, X. R. Zhou, Cheng Li, Yuanbo Chen, Jingzhou Fan, T. Held, Niklaus Berger, A. Hafner, J. G. Messchendorp, T. Ma, Dmitri Dedovich, Q. L. Xiu, M. Pelizaeus, G. X. Sun, Z. P. Mao, I. Uman, Xiang Li, A. Calcaterra, L. L. Wang, Xiang Zhou, S. B. Liu, B. Kloss, X. S. Qin, Cunming Liu, Y. Guo, G. R. Liao, X. Y. Shen, Jingzhou Zhao, X. W. Tang, B. Kopf, I. B. Nikolaev, Ding-Xiong Wang, Ye-Fei Yuan, B. X. Zhang, M. Bertani, Minglin Ma, S. L. Niu, M. Kornicer, Z. Y. You, J. S. Huang, Hong Ma, R. E. Mitchell, L. Yang, F. F. An, I. Denysenko, Q. A. Malik, Z. Y. Deng, J. Liu, H. H. Liu, M. Fritsch, C. Dong, Y. H. Yan, O. Albayrak, Zhenyu Zhang, B. J. Liu, L. G. Xia, Tiefu Zhao, S. Sosio, H. Y. Zhang, Wu Li, Jianhao Zhang, Tao Hu, Joachim Pettersson, Meng Wang, Jia Liu, M. Destefanis, X. S. Kang, Chang-Zheng Yuan, Y. J. Mo, Cunfeng Feng, D. H. Zhang, G. Mezzadri, W. C. Yan, F. E. Maas, L. Q. Qin, L. Fava, Zhanwen Zhu, Y. F. Liang, X. L. Li, H. S. Chen, M. Ripka, T. Weber, Y. Ding, N. Qin, P. L. Liu, Chen Hu, Z. L. Hou, X. L. Luo, X. K. Chu, H. J. Lu, B. Y. Zhang, C. Morales Morales, Feng Liu, Ling Zhao, O. Bakina, X. S. Jiang, Kanglin He, Zhao-Long Wang, Z. Gao, Ch. Rosner, I. Garzia, Jianyu Zhang, L. H. Wu, P. X. Shen, Ka-Yuet Liu, P. Musiol, L. W. Jiang, C. F. Redmer, C. Schnier, Zhiqing Zhang, W. Gradl, M. Ablikim, Yu Zhang, A. A. Zafar, J. M. Zhang, S. Han, M. Savrie, J. M. Bian, Y.N. Gao, L. Xia, Jianbei Liu, Lei Xu, W. Shan, Dan Bennett, N. Kalantar-Nayestanaki, Jianguo Zhang, Yi Fang, Y. Q. Wang, K. H. Rashid, U. Wiedner, Qingnian Xu, Qiang Zhao, S. Nisar, Y. Hu, Kai Liu, Xin Fang, H. B. Liu, X. L. Kang, D. Xiao, Q. W. Zhao, M. H. Ye, X. Y. Jiang, Yun-Zhi Zhang, P. Weidenkaff, L. D. Liu, P. R. Li, J. L. Ping, Zahra Haddadi, W. J. Zheng, Y. Nefedov, F. Nerling, Y. Pan, J. Chai, X. Z. Cai, R. P. Guo, W. Ikegami Andersson, Tord Johansson, F. De Mori, Fu-Hu Liu, Y. J. Sun, Z. J. Sun, Y. P. Guo, Y. S. Zhu, Y. B. Liu, Gang Li, G. S. Varner, G. A. Chelkov, Z. H. Qin, Talib Hussain, Yanwei Wang, Li Zhou, Z. L. Dou, D. P. Jin, Xiao-Rui Lyu, X. Y. Ma, M. Y. Dong, Qingming Ma, Kai Zhu, Z. L. Huang, J. C. Chen, S. Qian, Xiang Liu, Xiaoyu Li, Jiaheng Zou, Chunxu Yu, T. J. Min, L. J. Wu, P. Larin, Krisztian Peters, J. F. Hu, Y. Ma, S. Spataro, Jianbin Jiao, B. X. Yu, K. Goetzen, I. Boyko, H. P. Peng, H. M. Hu, I. Tapan, W. F. Wang, H. Xiao, E. Boger, Xinying Song, D. J. Ambrose, Xiaocong Ai, X. R. Chen, M. Albrecht, Cui Li, and P. Patteri
Subjects: Nuclear physics, Physics, Cross section (physics), 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Sigma, Center of mass, 010306 general physics, 01 natural sciences, Resonance (particle physics), Belle experiment, Storage ring
Abstract: The cross section for the process e(+)e(-)-> pi(+) pi(-) J/psi is measured precisely at center-of-mass energies from 3.77 to 4.60 GeV using 9 fb(-1) of data collected with the BESIII detector operating at the BEPCII storage ring. Two resonant structures are observed in a fit to the cross section. The first resonance has a mass of (222.0 +/- 3.1 +/- 1.4) MeV/ c(2) and a width of (44.1 +/- 4.3 +/- 2.0)MeV, while the second one has a mass of (4320.0 +/- 10.4 +/- 7.0)MeV/c(2) and a width of (101.4(- 19.7)(+25.3) +/- 10.2) MeV, where the first errors are statistical and second ones are systematic. The first resonance agrees with the Y(4260) resonance reported by previous experiments. The precision of its resonant parameters is improved significantly. The second resonance is observed in e(+)e(-)-> pi(+) pi(-) J/psi for the first time. The statistical significance of this resonance is estimated to be larger than 7.6 sigma. The mass and width of the second resonance agree with the Y(4360) resonance reported by the BABAR and Belle experiments within errors. Finally, the Y(4008) resonance previously observed by the Belle experiment is not confirmed in the description of the BESIII data.
Published: 2017
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25. Author Correction: Aqueous Li-ion battery enabled by halogen conversion–intercalation chemistry in graphite

Author: Oleg Borodin, Singyuk Hou, Xiao Ji, Yingqi Wang, Tingting Qing, Chunsheng Wang, Kang Xu, Ji Chen, Qi Liu, Xujie Lü, Yang Ren, Travis P. Pollard, Cheng-Jun Sun, Chongyin Yang, and Cunming Liu
Subjects: Multidisciplinary, Aqueous solution, Chemistry, Intercalation (chemistry), Analytical chemistry, Battery (vacuum tube), 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Ion, Halogen, Anhydrous, Graphite, Chemistry (relationship), 0210 nano-technology
Abstract: In Fig. 3e of this Letter, the labels "Br-Cl1" and "Br-Cl2" should read "Br-Br1" and "Br-Br2", respectively. In the Methods section 'Preparation of electrodes', the phrase "anhydrous LiBr/LiCl was replaced by LiBr·H2O (99.95%; Sigma-Aldrich) and LiCl (99.95%; Sigma-Aldrich)" should read "anhydrous LiBr/LiCl was replaced by LiBr·H2O (99.95%; Sigma-Aldrich) and LiCl·H2O (99.95%; Sigma-Aldrich)". These errors have been corrected online.
Published: 2019
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26. TiO2-Based Nanomaterials for Advanced Environmental and Energy-Related Applications

Author: Xujie Lü, Yefeng Yang, Cunming Liu, Hao Tang, and Bao Yu Xia
Subjects: Materials science, Article Subject, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Nanomaterials, lcsh:Technology (General), lcsh:T1-995, General Materials Science, 0210 nano-technology, Energy (signal processing)
Published: 2016
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27. Optical Coherence in Atomic-Monolayer Transition-Metal Dichalcogenides Limited by Electron-Phonon Interactions

Author: David J. Hilton, Prasenjit Dey, Alessandra Romero, Denis Karaiskaj, Jie Shan, Zefang Wang, J. Paul, C. E. Stevens, and Cunming Liu
Subjects: Materials science, Condensed matter physics, Phonon, Dephasing, Strong interaction, General Physics and Astronomy, 02 engineering and technology, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 021001 nanoscience & nanotechnology, 01 natural sciences, Condensed Matter::Materials Science, Laser linewidth, Transition metal, 0103 physical sciences, Monolayer, 010306 general physics, 0210 nano-technology, Spectroscopy, Coherence (physics)
Abstract: We systematically investigate the excitonic dephasing of three representative transition-metal dichalcogenides, namely, ${\mathrm{MoS}}_{2}$, ${\mathrm{MoSe}}_{2}$, and ${\mathrm{WSe}}_{2}$ atomic monolayer thick and bulk crystals, in order to gain a proper understanding of the factors that determine the optical coherence in these materials. Coherent nonlinear optical spectroscopy and temperature dependent absorption, combined with theoretical calculations of the phonon spectra, indicate electron-phonon interactions, to be the limiting factor. Surprisingly, the excitonic dephasing, differs only slightly between atomic monolayers and high quality bulk crystals, which indicates that material imperfections are not the limiting factor in atomically thin monolayer samples. The temperature dependence of the electronic band gap and the excitonic linewidth combined with ``ab initio'' calculations of the phonon energies and the phonon density of states reveal a strong interaction with the $E$' and $E$'' phonon modes.
Published: 2015

28. Strong Quantum Coherence between Fermi Liquid Mahan Excitons

Author: Prasenjit Dey, Volodymyr Turkowski, Cunming Liu, Denis Karaiskaj, John L. Reno, J. Paul, David J. Hilton, C. McIntyre, and C. E. Stevens
Subjects: Physics, Condensed matter physics, Exciton, General Physics and Astronomy, 02 engineering and technology, Electron, 021001 nanoscience & nanotechnology, 01 natural sciences, 0103 physical sciences, Quasiparticle, Density functional theory, Fermi liquid theory, 010306 general physics, 0210 nano-technology, Quantum, Quantum well, Coherence (physics)
Abstract: In modulation doped quantum wells, the excitons are formed as a result of the interactions of the charged holes with the electrons at the Fermi edge in the conduction band, leading to the so-called “Mahan excitons.” The binding energy of Mahan excitons is expected to be greatly reduced and any quantum coherence destroyed as a result of the screening and electron-electron interactions. Surprisingly, we observe strong quantum coherence between the heavy hole and light hole excitons. Such correlations are revealed by the dominating cross-diagonal peaks in both one-quantum and two-quantum two-dimensional Fourier transform spectra. Theoretical simulations based on the optical Bloch equations where many-body effects are included phenomenologically reproduce well the experimental spectra. Furthermore, time-dependent density functional theory calculations provide insight into the underlying physics and attribute the observed strong quantum coherence to a significantly reduced screening length and collective excitations of the many-electron system.
Published: 2015

29. Measurement of the masses and widths of the bottom baryonsΣb±andΣb*±

Author: P. Movilla Fernandez, B. Di Ruzza, Y. Takeuchi, M. D'Errico, M. E. Convery, V. Saveliev, Chi Lin, W. Ketchum, G. Piacentino, J. R. Smith, A. Penzo, Paul Lujan, Samantha Hewamanage, D. Krop, M. Dorigo, Pavol Bartos, F. Wick, S. Torre, A. Mitra, K. Takemasa, F. Vázquez, W. C. Wester, Chris Hays, J. Keung, Daryl Hare, V. V. Glagolev, Frank Chlebana, P. Catastini, M. Rescigno, C. Pagliarone, S. Y. Jun, Maxwell Chertok, C. Bromberg, A. Mukherjee, Justin Pilot, P. Squillacioti, Kazuhiko Hara, A. Artikov, I. Bizjak, Adrian Buzatu, Matthew Herndon, M. H. Kirby, N. Ranjan, S. Rolli, Benjamin Kilminster, Stefano Zucchelli, Barry Blumenfeld, Tommaso Dorigo, Matteo Bauce, Antonio Limosani, Mark Kruse, Alison Lister, C. P. Marino, Robin Erbacher, M. Datta, Mark Campbell, Virgil E Barnes, Y. D. Oh, G. Chlachidze, Fedor Prokoshin, S. Kwang, D. H. Kim, B. Auerbach, S. R. Hahn, W-M. Yao, L. B. Oakes, Hongfang Liu, Chen Zhou, G. Flanagan, Sebastian Grinstein, A. Barbaro-Galtieri, P. Sinervo, D. Yamato, M. Gold, T. Okusawa, E. Lee, Viviana Cavaliere, T. Miao, D. Chokheli, Bernd Stelzer, K. Gibson, A. Simonenko, Y. C. Yang, R. Vilar, C. S. Moon, T. Wright, L. Brigliadori, M. Cordelli, V. Papadimitriou, G. Busetto, Brian L Winer, P. Totaro, T. Aaltonen, Mario Campanelli, M. Kurata, P. Mehtala, Andrew Ivanov, D. Mietlicki, S. Amerio, Christoph Paus, S. Moed, Kiminori Kondo, K. Ebina, Young-Jin Kim, M. J. Kim, Xin Wu, Keunchang Cho, A. Savoy-Navarro, F. Canelli, A. Elagin, G. Giurgiu, A. Bocci, Jay Dittmann, J. Huston, Andrew Beretvas, Daniela Bortoletto, D. Lucchesi, T. Wakisaka, H. S. Lee, A. Hamaguchi, S. M. Wang, D. J. Cox, P. E. Karchin, A. Castro, E. Gerchtein, E. Palencia, T. Kuhr, Maxim Goncharov, Aron Soha, B. Jayatilaka, L. Demortier, A. Mazzacane, M. N. Mondragon, Paolo Maestro, J. Lueck, J. Thome, Michele Gallinaro, P. N. Dong, Peter Wittich, D. E. Pellett, Tomoko Yoshida, Cunming Liu, N. Moggi, B. Alvarez Gonzalez, Peter Wagner, H. Gerberich, Stephan Lammel, Massimo Casarsa, Manfred Paulini, Giovanni Bellettini, Yoshikazu Nagai, T. A. Schwarz, Monica D'Onofrio, E. J. Jeon, C. Calancha, A. Hocker, Nicola D'Ascenzo, J. A. Appel, G. Pauletta, J. Yoh, D. W. Jang, G. Punzi, M. E. Mattson, T. Tomura, K. S. McFarland, M. M. Deninno, K. R. Bland, F. Rimondi, M. Heck, J. S. H. Lee, V. Rusu, S. W. Lee, D. Goldin, M. Lancaster, T. Yang, H. Wolfe, A. T. Goshaw, Amitabh Lath, Angela Mehta, Vyacheslav Krutelyov, S. Uozumi, A. Semenov, M. Lindgren, Paola Giannetti, B. A. Barnett, I. Yu, W. H. Chung, F. Ptohos, R. Culbertson, A. Di Canto, I. Suslov, S. Leo, Jmv Garcia, J. Morlock, K. K. Joo, John Strologas, Sinead Farrington, Thomas LeCompte, J. C. Yun, Tara Shears, Federico Sforza, D. Glenzinski, Katsufumi Sato, T. R. Junk, G. Manca, Teruki Kamon, P. Mazzanti, Bruno Casal, P. B. Renton, S. S. Yu, Stefano Camarda, S. Poprocki, Y. Zeng, H. H. Williams, H. S. Budd, D. Cauz, J. Antos, R. McNulty, M. Hare, Lucio Cerrito, M. Tecchio, G. Introzzi, C. Plager, S. R. Hou, J. Nett, S. Errede, Francesco Crescioli, Oliver Stelzer-Chilton, Yongsun Kim, Stefano Giagu, J. Kroll, R. Madrak, J. Naganoma, Miriam Lucio Martinez, Eva Halkiadakis, Kaori Maeshima, P. Murat, M. Stancari, J. Asaadi, C. A. Cox, E. James, Sergo Jindariani, Naoki Kimura, Y. S. Chung, K. Knoepfel, Paolo Mastrandrea, A. Varganov, M. Corbo, Y. C. Chen, A. Golossanov, Rainer Wallny, S. Carrillo, Giorgio Apollinari, A. Boveia, Y. Sakurai, G. L. Strycker, Christopher Clarke, Walter Hopkins, J. Budagov, P. Wilson, Matteo Cavalli-Sforza, R. Forrest, L. Santi, Giorgio Chiarelli, D. Horn, K. Tollefson, Mauro Dell'Orso, O. Norniella, Alexei Safonov, Elisabetta Pianori, Jane Nachtman, A. Pranko, Kevin Burkett, M. J. Shochet, L. Nodulman, R. L. Lander, D. Tonelli, Jian Tang, J. S. Conway, D. Dagenhart, S. H. Kim, Javier Cuevas, Hong Ye Song, G. P. Yeh, G. Volpi, Gervasio Gomez, Koji Yamamoto, Ulrich Husemann, D. J. Kong, A. Manousakis-Katsikakis, P. K. Teng, Ignacio Redondo, A. Napier, J. Boudreau, A. V. Kotwal, W. Ashmanskas, S. Lockwitz, Sudhir Malik, M. Vidal, B. Carls, V. Sorin, P. Lukens, Marco Trovato, J. D. Lewis, Teresa Rodrigo, Alberto Annovi, I. Oksuzian, G. Compostella, Y. Funakoshi, N. Ershaidat, Q. Liu, I. Shreyber-Tecker, Th. Müller, K. Sliwa, Mahmoud I. Hussein, T. J. Phillips, R. L. Wagner, K. Goulianos, F. Azfar, S. Klimenko, Patrizia Barria, D. Waters, S. Tokar, V. Khotilovich, Matthew Jones, Luca Scodellaro, P. Giromini, Anna Zanetti, S. Pagan Griso, P. de Barbaro, Franco Bedeschi, D. Toback, J. O. Nielsen, M. J. Morello, F. D. Snider, L. Pondrom, E. Wicklund, J. Y. Han, Jacobo Konigsberg, Sally Seidel, W. Badgett, N. Hussain, G.V. Velev, M. Shimojima, Andreas Warburton, Scott Wilbur, A. Scribano, M. Iori, R. E. Hughes, S. Donati, Kenichi Hatakeyama, S. Lami, Daniel Whiteson, Alexander Paramonov, M. Franklin, F. Ruffini, D. Torretta, A. Sukhanov, A. Anastassov, C. Mesropian, V. Ramakrishnan, S. Y. Noh, J. F. Patrick, Aidan Robson, D. P. Benjamin, Joachim Heinrich, A. Kasmi, T. Bae, A. Eppig, G. B. Yu, S. Behari, Y. Seiya, K. Potamianos, Y. Kato, J. Guimaraes Da Costa, K. T. Pitts, J. C. Freeman, A. Ruiz, I. V. Gorelov, Zhenbin Wu, S. B. Kim, Giuseppe Latino, Marcelo Vogel, J. E. Kim, T. Rodriguez, Fabrizio Margaroli, V. A. Giakoumopoulou, Kai Yi, J. Lys, Neubauer, R. Roser, Ivan Vila, R. St. Denis, Hirokazu Miyake, P. Garosi, M. Frank, J. N. Bellinger, L. Ristori, G. A. Thompson, E. Rogers, S. Z. Shalhout, Allan G Clark, Roger Moore, D. O. Litvintsev, A. T. Laasanen, Kevin Lannon, Guillelmo Gomez-Ceballos, I. K. Furic, L. Ortolan, C. M. Ginsburg, J. P. Fernandez, P. F. Shepard, S. H. Oh, Manuel Mussini, Ricardo Eusebi, Tetsuo Arisawa, C. Neu, O. González, Itsuo Nakano, Alan Garfinkel, P. McIntyre, T. Liu, T. Riddick, Elliot Lipeles, R. Orava, G. Lungu, A. Aurisano, J. S. Wilson, L. Labarga, N. Giokaris, R. D. Field, A. Schmidt, Yuji Sudo, J. Thom, M. Hurwitz, M. Feindt, P. Schlabach, Sandra Leone, A. Cerri, H. S. Kim, W. K. Sakumoto, Ciocci, C. Grosso-Pilcher, N. Goldschmidt, James Russ, Kohei Yorita, Roman Lysak, D. Amidei, K. Matera, Aristotle Calamba, C. Vellidis, S. Wolbers, Arie Bodek, A. Rahaman, Michal Kreps, Rodolfo Carosi, U. K. Yang, Evelyn Thomson, F. Happacher, Fabrizio Scuri, Dario Bisello, A. Bhatti, F. Devoto, S. Carron, Duncan Carlsmith, R. F. Harr, P. J. Bussey, Fumihiko Ukegawa, A. Loginov, A. B. Wicklund, Erik Brücken, E. E. Schmidt, D. Stentz, and J. Vizán
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Proton, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Tevatron, Sigma, Lambda, 01 natural sciences, 7. Clean energy, Luminosity, Baryon, Isospin, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, 010306 general physics
Abstract: Using data from proton - anti-proton collisions at the energy Ecm = 1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, we present improved measurements of the masses and first measurements of natural widths of the four bottom baryon resonance states Sigma_b+, Sigma_b*+ and Sigma_b-, Sigma_b*-. These states are fully reconstructed in their decay modes to Lambda_b pi+-, where Lambda_b -->Lambda_c+ pi- with Lambda_c+ -->prot K- pi+. The analysis is based on a data sample corresponding to an integrated luminosity of 6.0/fb collected by an online event selection based on tracks displaced from the proton - anti-proton interaction point.
Published: 2012
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30. Measurement ofZZProduction in Leptonic Final States atsof 1.96 TeV at CDF

Author: M. D'Errico, Yuji Sudo, M. E. Convery, M. Feindt, P. Schlabach, J. Antos, S. Donati, A. Cerri, Kenichi Hatakeyama, H. S. Kim, Alexander Paramonov, C. Paus, M. Franklin, Paul Lujan, A. Eppig, J. Asaadi, E. James, Naoki Kimura, A. R. Clark, Samantha Hewamanage, M. Dorigo, James Russ, Kohei Yorita, F. Wick, P. Catastini, D. Horn, D. Tonelli, S. Y. Jun, Matteo Bauce, Antonio Limosani, C. Bromberg, Jian Tang, S. H. Kim, Javier Cuevas, Robin Erbacher, M. Datta, Hong Ye Song, W-M. Yao, J. S. Conway, C. S. Moon, M. Cordelli, G. Busetto, Brian L Winer, R. Forrest, F. Ptohos, A. Barbaro-Galtieri, Elliot Lipeles, S. Uozumi, R. F. Harr, J. C. Freeman, A. Ruiz, Chris Hays, T. G. Shears, A. Semenov, C. Plager, G. Volpi, Gervasio Gomez, Roman Lysak, D. Torretta, C. Mesropian, J. C. Yun, Oliver Stelzer-Chilton, Yongsun Kim, H. S. Lee, Paolo Maestro, F. Rimondi, C. M. Ginsburg, Hirokazu Miyake, P. Garosi, M. Frank, A. Savoy-Navarro, M. Corbo, Y. C. Chen, P. F. Shepard, G. Piacentino, Th. Müller, K. Sliwa, L. Santi, Giorgio Chiarelli, A. Aurisano, J. S. Wilson, P. J. Bussey, S. Klimenko, S. H. Oh, B. Alvarez Gonzalez, K. Matera, Giuseppe Latino, Marcelo Vogel, Mahmoud I. Hussein, J. Nett, Stefano Giagu, Y. Takeuchi, V. Ramakrishnan, N. Giokaris, L. Brigliadori, S. Y. Noh, H. Gerberich, Aristotle Calamba, Peter Wagner, Elisabetta Pianori, Jane Nachtman, A. Pranko, Kevin Burkett, T. A. Schwarz, Monica D'Onofrio, A. Schmidt, S. Wolbers, Patrizia Barria, A. Kasmi, C. Calancha, A. Hocker, Michal Kreps, C. Vellidis, J. Kroll, J. Thom, Fabrizio Margaroli, M. Gold, D. P. Benjamin, Joachim Heinrich, A. K. Mehta, D. Mietlicki, J. N. Bellinger, M. M. Deninno, Ignacio Redondo, V. Saveliev, S. Kwang, O. González, M. Kurata, Andrew Ivanov, Fabrizio Scuri, F. Devoto, Itsuo Nakano, S. Carron, Tetsuo Arisawa, C. Neu, Y. Seiya, W.F. Badgett, Pavol Bartos, J. S. H. Lee, D. H. Kim, Keunchang Cho, R. Culbertson, K. S. McFarland, J. D. Lewis, K. R. Bland, Alberto Annovi, I. Suslov, G. B. Yu, A. Elagin, S. Behari, Y. Funakoshi, Amitabh Lath, L. Ristori, W. Ketchum, A. Rahaman, A. Bocci, Jay Dittmann, Paola Giannetti, B. A. Barnett, S. W. Lee, D. Goldin, T. R. Junk, N. Ershaidat, Q. Liu, Alexei Safonov, Ricardo Eusebi, Duncan Carlsmith, T. Yang, Y. S. Chung, Fumihiko Ukegawa, Daniela Bortoletto, P. E. Karchin, V. Khotilovich, S. R. Hahn, J. E. Kim, T. Rodriguez, Y. Kato, J. Guimaraes Da Costa, Alan Garfinkel, P. McIntyre, S. Carrillo, Sinead Farrington, Teruki Kamon, P. Mazzanti, Bruno Casal, S. Poprocki, A. Bodek, M. Lindgren, R. McNulty, M. Hare, L. Demortier, Scott Wilbur, P. N. Dong, D. Cauz, Miriam Lucio Martinez, G. A. Thompson, A. Loginov, Kaori Maeshima, Daryl Hare, M. Iori, V. V. Glagolev, K. T. Pitts, F. Azfar, M. Stancari, A. Golossanov, I. V. Gorelov, Zhenbin Wu, M. Tecchio, Rodolfo Carosi, A. Varganov, C. Pagliarone, T. Liu, Chen Zhou, Thomas LeCompte, A. B. Wicklund, Erik Brücken, E. E. Schmidt, W. C. Wester, S. Lami, D. Stentz, A. Mazzacane, A. Castro, J. Vizán, V. A. Giakoumopoulou, U. K. Yang, D. Waters, L. Pondrom, E. Wicklund, E. Rogers, G. Manca, M. N. Mondragon, Paolo Mastrandrea, P. Squillacioti, Kazuhiko Hara, J. Keung, Michele Gallinaro, Matteo Cavalli-Sforza, Peter Wittich, M. Mussini, Adrian Buzatu, S. Z. Shalhout, T. Riddick, Sally Seidel, Manfred Paulini, G.V. Velev, Matthew Jones, F. Happacher, P. Totaro, J. Lueck, Dario Bisello, A. Bhatti, Mark Campbell, D. E. Pellett, Hongfang Liu, A. Sukhanov, Fedor Prokoshin, A. Artikov, Kevin Lannon, G. P. Yeh, Luca Scodellaro, Jacobo Konigsberg, T. Okusawa, A. Napier, J. P. Fernandez, P. Giromini, Koji Sato, A. T. Goshaw, Mark Neubauer, A. Simonenko, K. K. Joo, N. Hussain, T. Miao, D. Chokheli, Anna Zanetti, John Strologas, Teresa Rodrigo, I. Oksuzian, P. Murat, J. Huston, T. J. Phillips, V. Papadimitriou, P. Mehtala, D. Lucchesi, Virgil E Barnes, R. Orava, A. Mukherjee, Kai Yi, G. Lungu, L. Nodulman, D. Yamato, R. E. Hughes, Guillelmo Gomez-Ceballos, Bernd Stelzer, H. H. Williams, I. K. Furic, G. Introzzi, E. Gerchtein, A. Di Canto, Andrew Beretvas, T. Tomura, Matthew Herndon, J. Lys, Vyacheslav Krutelyov, L. Ortolan, R. Roser, Ivan Vila, K. Gibson, Daniel Whiteson, F. Ruffini, C. A. Cox, S. Leo, R. D. Field, T. Wright, Xin Wu, D. Glenzinski, S. M. Wang, T. Aaltonen, M. Hurwitz, J. O. Nielsen, M. J. Morello, F. D. Snider, S. R. Hou, Roger Moore, J. Yoh, J. Y. Han, D. O. Litvintsev, M. J. Kim, P. B. Renton, S. S. Yu, Stefano Camarda, Sergo Jindariani, K. Tollefson, S. Rolli, Benjamin Kilminster, Sandra Leone, A. V. Kotwal, F. Canelli, T. Kuhr, J. Thome, R. L. Wagner, Y. Zeng, Tomoko Yoshida, Cunming Liu, E. Palencia, J. Budagov, S. Errede, Francesco Crescioli, Maxim Goncharov, Aron Soha, Massimo Casarsa, I. Shreyber-Tecker, Barry Blumenfeld, Y. D. Oh, G. Flanagan, R. Madrak, S. Pagan Griso, J. Naganoma, K. Goulianos, W. K. Sakumoto, R. St. Denis, R. L. Lander, D. Amidei, E. Lee, E. Thomson, Viviana Cavaliere, Tommaso Dorigo, Giovanni Bellettini, D. J. Kong, S. Moed, Kiminori Kondo, C. Grosso-Pilcher, Eva Halkiadakis, Frank Chlebana, Nicola D'Ascenzo, J. A. Appel, Giorgio Apollinari, G. Pauletta, B. Carls, V. Sorin, P. Lukens, Y. Sakurai, D. W. Jang, N. Goldschmidt, G. L. Strycker, K. J. Knoepfel, I. Yu, M. J. Shochet, A. Robson, W. H. Chung, M. Rescigno, Justin Pilot, P. de Barbaro, D. Krop, K. Ebina, S. Tokar, K. Takemasa, G. Chlachidze, A. T. Laasanen, F. Vázquez, Koji Yamamoto, Ulrich Husemann, A. Manousakis-Katsikakis, Franco Bedeschi, P. K. Teng, W. Ashmanskas, S. Lockwitz, Sudhir Malik, M. Vidal, J. Morlock, Marco Trovato, M. H. Kirby, N. Ranjan, Stefano Zucchelli, Young-Jin Kim, B. Auerbach, Mark Kruse, D. Toback, Alison Lister, Lucio Cerrito, Sebastian Grinstein, T. Wakisaka, A. Hamaguchi, A. Boveia, Christopher Clarke, Walter Hopkins, Y. C. Yang, Stephan Lammel, R. Vilar, E. J. Jeon, N. Moggi, M. E. Mattson, G. Punzi, Jmv Garcia, H. S. Budd, P. Movilla Fernandez, B. Di Ruzza, Y. Nagai, Chi Lin, J. R. Smith, A. Penzo, Rainer Wallny, Mauro Dell'Orso, O. Norniella, D. Dagenhart, Paul Wilson, Mario Campanelli, S. Amerio, J. Boudreau, Maria Agnese Ciocci, G. Compostella, D. J. Cox, G. Giurgiu, V. Rusu, B. Jayatilaka, M. Lancaster, H. Wolfe, Federico Sforza, A. Scribano, A. Anastassov, J. F. Patrick, M. Heck, T. Bae, K. Potamianos, S. Torre, A. Mitra, S. B. Kim, Maxwell Chertok, I. Bizjak, C. P. Marino, L. B. Oakes, P. Sinervo, M. Shimojima, and Andreas Warburton
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Production (economics), 010306 general physics, 01 natural sciences
Published: 2012
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31. Measurement of the branching fractionB(Λb0→Λc+π−π+π−)at CDF

Author: M. E. Convery, D. Horn, D. Tonelli, D. Waters, Jian Tang, S. H. Kim, Javier Cuevas, Matthew Jones, Scott Wilbur, G. L. Strycker, Paul Lujan, M. P. Schmidt, R. L. Wagner, Allan G Clark, Roger Moore, D. O. Litvintsev, M. Iori, M. J. Shochet, S. Torre, M. Hurwitz, Samantha Hewamanage, Th. Müller, K. Sliwa, Yuji Sudo, K. Goulianos, S. Y. Jun, V. Ramakrishnan, M. Dorigo, M. Feindt, Luca Scodellaro, P. Schlabach, A. Mitra, Sandra Leone, J. D. Lewis, S. Lami, Alberto Annovi, V. Khotilovich, Aidan Robson, J. E. Kim, T. Rodriguez, P. Totaro, C. Pagliarone, M. Rescigno, Justin Pilot, V. A. Giakoumopoulou, Maxwell Chertok, A. Semenov, B. Alvarez Gonzalez, F. Wick, D. P. Benjamin, Joachim Heinrich, C. Plager, J. Nett, Matteo Bauce, Alexei Safonov, A. Cerri, H. S. Kim, Rainer Wallny, Adrian Buzatu, Antonio Limosani, P. Giromini, P. Catastini, Anna Zanetti, W. K. Sakumoto, C. Bromberg, I. Bizjak, P. de Barbaro, A. Mazzacane, M. N. Mondragon, J. Lueck, G. B. Yu, Ciocci, Franco Bedeschi, Koji Yamamoto, Ulrich Husemann, A. Manousakis-Katsikakis, S. Behari, P. K. Teng, T. Kuhr, J. S. H. Lee, R. Culbertson, Robin Erbacher, M. Datta, William Joseph Johnson, N. Moggi, Hongfang Liu, I. Suslov, D. E. Pellett, R. F. Harr, H. C. Fang, D. Toback, W-M. Yao, Y. Kato, W. Ashmanskas, S. Lockwitz, Sudhir Malik, M. Vidal, J. Thome, D. Mietlicki, James Russ, C. Grosso-Pilcher, Mark Kruse, Alison Lister, Sinead Farrington, A. Simonenko, C. P. Marino, A. T. Laasanen, H. Gerberich, J. Guimaraes Da Costa, Marco Trovato, Kohei Yorita, Massimo Casarsa, N. Goldschmidt, T. Liu, S. Poprocki, Giovanni Bellettini, L. Demortier, Jacob Linacre, V. Papadimitriou, G. Punzi, Lucio Cerrito, G. P. Yeh, P. N. Dong, K. T. Pitts, C. Calancha, A. Hocker, L. B. Oakes, Mauro Dell'Orso, M. Stancari, P. J. Bussey, W. Badgett, P. Sinervo, Sebastian Grinstein, C. S. Moon, G. A. Thompson, M. Cordelli, G. Busetto, Brian L Winer, Manfred Paulini, T. Riddick, T. A. Schwarz, S. Carrillo, A. Di Canto, S. Leo, A. Golossanov, Chris Hays, F. Ptohos, Roman Lysak, D. Amidei, C. Haber, O. Norniella, Mario Campanelli, S. Amerio, M. Shimojima, A. T. Goshaw, P. Murat, Fumihiko Ukegawa, A. Boveia, Christopher Clarke, Walter Hopkins, J. Morlock, Monica D'Onofrio, A. Napier, E. Rogers, Andrew Beretvas, D. Yamato, S. Uozumi, A. Loginov, H. S. Budd, I. V. Gorelov, Zhenbin Wu, P. Squillacioti, Kazuhiko Hara, Christoph Paus, A. B. Wicklund, Teresa Rodrigo, L. Nodulman, D. J. Cox, S. Z. Shalhout, K. S. McFarland, Bernd Stelzer, P. B. Renton, S. S. Yu, R. Orava, Stefano Camarda, Andreas Warburton, Erik Brücken, K. R. Bland, I. Oksuzian, Y. Funakoshi, A. Artikov, Aristotle Calamba, Z. Gunay-Unalan, D. Glenzinski, Katsufumi Sato, E. E. Schmidt, B. Jayatilaka, D. J. Kong, J. Keung, J. C. Yun, T. Yang, Oliver Stelzer-Chilton, Y. Zeng, C. Vellidis, G. Lungu, Y. Takeuchi, D. Stentz, Fedor Prokoshin, B. Carls, S. R. Hou, S. Errede, Francesco Crescioli, T. Okusawa, R. Madrak, R. D. Field, A. Mukherjee, V. Sorin, P. Lukens, T. J. Phillips, Yongsun Kim, G. Piacentino, J. Kroll, D. Dagenhart, V. Saveliev, J. Naganoma, Matthew Herndon, S. M. Wang, J. O. Nielsen, M. J. Morello, F. D. Snider, K. K. Joo, Arie Bodek, J. Vizán, M. Gold, A. Barbaro-Galtieri, M. Corbo, Y. C. Chen, J. Huston, Y. S. Chung, M. Binkley, A. Rahaman, Eva Halkiadakis, Jacobo Konigsberg, R. J. Tesarek, J. Y. Han, D. Lucchesi, W. Ketchum, Tommaso Dorigo, M. Heck, S. Rolli, Benjamin Kilminster, K. Matera, C. M. Ginsburg, Y. Sakurai, Hirokazu Miyake, L. Santi, N. Hussain, F. Rimondi, P. F. Shepard, S. H. Oh, Giorgio Chiarelli, Giorgio Apollinari, L. Brigliadori, Barry Blumenfeld, G. Chlachidze, B. Auerbach, L. Pondrom, E. Wicklund, T. Miao, D. Chokheli, M. Kurata, S. Tokar, Andrew Ivanov, Pavol Bartos, Elisabetta Pianori, Jane Nachtman, A. Pranko, P. Garosi, M. Frank, Paolo Azzurri, Kevin Burkett, J. Boudreau, S. Wolbers, Keunchang Cho, D. Torretta, A. Sukhanov, O. González, Daniela Bortoletto, P. E. Karchin, C. Mesropian, K. Ebina, K. Gibson, H. S. Lee, Young-Jin Kim, Itsuo Nakano, Tomoko Yoshida, Cunming Liu, A. Scribano, Michal Kreps, Y. C. Yang, Sally Seidel, E. Vataga, Alan Garfinkel, T. Wakisaka, A. Castro, A. Elagin, A. Bocci, Jay Dittmann, G.V. Velev, John Strologas, Evelyn Thomson, G. Compostella, Xin Wu, Paolo Maestro, R. Vilar, Daryl Hare, H. H. Williams, V. V. Glagolev, Rodolfo Carosi, Ignacio Redondo, Y. D. Oh, G. Flanagan, P. McIntyre, Fabrizio Scuri, F. Canelli, S. Kwang, S. Y. Noh, D. H. Kim, A. Anastassov, G. Introzzi, F. Devoto, S. Carron, Vyacheslav Krutelyov, J. N. Bellinger, E. Lee, Viviana Cavaliere, A. Hamaguchi, W. C. Wester, C. A. Cox, Sergo Jindariani, Duncan Carlsmith, R. E. Hughes, J. F. Patrick, A. Kasmi, G. Giurgiu, Stephan Lammel, L. Ristori, Yoshikazu Nagai, S. Moed, Kiminori Kondo, U. K. Yang, S. R. Hahn, J. Budagov, Michele Gallinaro, T. Bae, Tara Shears, K. Potamianos, N. Ershaidat, Q. Liu, R. L. Lander, Daniel Whiteson, F. Ruffini, J. Antos, J. S. Conway, G. Volpi, Gervasio Gomez, A. Savoy-Navarro, Y. Seiya, S. B. Kim, V. Rusu, S. Donati, Kenichi Hatakeyama, E. J. Jeon, Peter Wittich, F. Happacher, Dario Bisello, A. Bhatti, M. Lancaster, Frank Chlebana, J. Asaadi, H. Wolfe, E. James, Nicola D'Ascenzo, J. A. Appel, Alexander Paramonov, M. Franklin, Naoki Kimura, F. Azfar, Mahmoud I. Hussein, M. E. Mattson, K. Tollefson, Federico Sforza, T. Tomura, Yuhai Tu, Patrizia Barria, Peter Wagner, A. V. Kotwal, G. Pauletta, I. Shreyber-Tecker, D. W. Jang, Amitabh Lath, A. Eppig, Angela Mehta, J. C. Freeman, Paola Giannetti, B. A. Barnett, A. Ruiz, Jmv Garcia, R. Forrest, T. R. Junk, Teruki Kamon, P. Mazzanti, Bruno Casal, S. Pagan Griso, D. Cauz, Giuseppe Latino, Miriam Lucio Martinez, Kaori Maeshima, Marcelo Vogel, M. M. Deninno, A. N. Sissakian, Fabrizio Margaroli, P. Wilson, Matteo Cavalli-Sforza, Mark Campbell, I. Yu, W. H. Chung, Kai Yi, J. Lys, Neubauer, P. Mehtala, P. Movilla Fernandez, R. Roser, Ivan Vila, E. Gerchtein, D. Krop, B. Di Ruzza, J. Yoh, R. St. Denis, R. McNulty, M. Hare, Chi Lin, K. Takemasa, M. Tecchio, J. R. Smith, A. Penzo, K. Knoepfel, F. Vázquez, A. Varganov, M. H. Kirby, N. Ranjan, Stefano Zucchelli, Virgil E Barnes, T. Wright, T. Aaltonen, M. J. Kim, E. Palencia, Maxim Goncharov, Aron Soha, S. W. Lee, D. Goldin, M. Lindgren, Thomas LeCompte, G. Manca, O. Poukhov, Kevin Lannon, Guillelmo Gomez-Ceballos, I. K. Furic, L. Ortolan, J. P. Fernandez, Manuel Mussini, Ricardo Eusebi, Tetsuo Arisawa, C. Neu, Elliot Lipeles, A. Aurisano, J. S. Wilson, N. Giokaris, A. Schmidt, J. Thom, and M. D'Errico
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, 010308 nuclear & particles physics, Branching fraction, TheoryofComputation_LOGICSANDMEANINGSOFPROGRAMS, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, Pi, 010306 general physics, Lambda, 01 natural sciences
Abstract: We report an analysis of the {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -} decay in a data sample collected by the CDF II detector at the Fermilab Tevatron corresponding to 2.4 fb{sup -1} of integrated luminosity. We reconstruct the currently largest samples of the decay modes {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}(2595){sup +}{pi}{sup -} (with {Lambda}{sub c}(2595){sup +} {yields} {Lambda}{sub c}{sup +}{pi}{sup +}{pi}{sup -}), {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}(2625){sup +}{pi}{sup -} (with {Lambda}{sub c}(2625){sup +} {yields} {Lambda}{sub c}{sup +}{pi}{sup +}{pi}{sup -}), {Lambda}{sub b}{sup 0} {yields} {Sigma}{sub c}(2455){sup ++}{pi}{sup -}{pi}{sup -} (with {Sigma}{sub c}(2455){sup ++} {yields} {Lambda}{sub c}{sup +}{pi}{sup +}), and {Lambda}{sub b}{sup 0} {yields} {Sigma}{sub c}(2455)0{pi}{sup +}{pi}{sup -} (with {Sigma}{sub c}(2455)0 {yields} {Lambda}{sub c}{sup +}{pi}{sup -}) and measure the branching fractions relative to the {Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -} branching fraction. We measure the ratio {Beta}({Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -})/ {Beta}({Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -})=3.04 {+-} 0.33(stat){sub -0.55}{sup +0.70}(syst) which is used to derive {Beta}({Lambda}{sub b}{sup 0} {yields} {Lambda}{sub c}{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -})=(26.8{sub -11.2}{sup +11.9}) x 10{sup -3}.
Published: 2012
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32. Search for new phenomena in events with twoZbosons and missing transverse momentum inpp¯collisions ats=1.96 TeV

Author: A. Artikov, Matthew Herndon, S. Rolli, Benjamin Kilminster, Barry Blumenfeld, R. L. Wagner, Chris Hays, D. J. Kong, C. S. Moon, T. Tomura, K. Goulianos, Scott Wilbur, S. W. Lee, D. Goldin, M. Cordelli, Frank Chlebana, M. Lindgren, M. Iori, S. Kwang, D. H. Kim, G. Busetto, Brian L Winer, S. R. Hahn, Chen Zhou, A. Robson, Mark Campbell, Elliot Lipeles, Y. Takeuchi, S. Donati, D. Krop, Thomas LeCompte, G. Manca, G. Giurgiu, L. Brigliadori, Roman Lysak, M. D'Errico, M. E. Convery, Kenichi Hatakeyama, Alexander Paramonov, C. Paus, M. Franklin, S. Lami, T. A. Schwarz, Monica D'Onofrio, A. Semenov, C. Plager, J. Nett, Stefano Giagu, Keunchang Cho, P. de Barbaro, Franco Bedeschi, S. Torre, P. Mehtala, V. Saveliev, W. Ketchum, A. Elagin, K. S. McFarland, B. Carls, V. Sorin, P. Lukens, A. Bocci, A. Aurisano, A. Mitra, Paul Lujan, A. Eppig, D. Toback, V. Rusu, Virgil E Barnes, K. R. Bland, K. Takemasa, J. S. Wilson, E. Gerchtein, J. Keung, Jay Dittmann, Y. D. Oh, N. Giokaris, T. Wright, T. Aaltonen, J. C. Freeman, T. Yang, G. Flanagan, J. D. Lewis, Aristotle Calamba, S. Uozumi, Maxwell Chertok, Samantha Hewamanage, W. C. Wester, A. Ruiz, M. J. Kim, Lucio Cerrito, M. Dorigo, Alberto Annovi, P. Murat, J. Yoh, E. Lee, Viviana Cavaliere, C. Vellidis, A. Schmidt, S. Tokar, M. Lancaster, F. Vázquez, F. Rimondi, E. Palencia, L. Nodulman, P. Totaro, A. Mukherjee, Amitabh Lath, V. Khotilovich, K. K. Joo, I. Bizjak, Maxim Goncharov, Giuseppe Latino, M. Kurata, Andrew Ivanov, Aron Soha, F. Wick, Paola Giannetti, B. A. Barnett, J. Thom, Daniela Bortoletto, J. E. Kim, J. C. Yun, S. Y. Jun, T. Rodriguez, T. R. Junk, H. Wolfe, Marcelo Vogel, S. Moed, Kiminori Kondo, C. M. Ginsburg, P. Catastini, C. Bromberg, John Strologas, P. E. Karchin, H. H. Williams, G. P. Yeh, J. O. Nielsen, Oliver Stelzer-Chilton, T. Miao, D. Chokheli, Tetsuo Arisawa, C. Neu, Michele Gallinaro, Yongsun Kim, Teruki Kamon, P. Mazzanti, Bruno Casal, M. J. Morello, F. D. Snider, J. Y. Han, Fabrizio Margaroli, A. Castro, C. P. Marino, A. Boveia, Christopher Clarke, Walter Hopkins, T. Kuhr, Hongfang Liu, D. Cauz, Miriam Lucio Martinez, Kaori Maeshima, P. F. Shepard, S. H. Oh, G. Introzzi, C. A. Cox, Yuji Sudo, Ricardo Eusebi, Matteo Bauce, Antonio Limosani, G. Piacentino, Peter Wittich, Sergo Jindariani, A. Mazzacane, Paolo Mastrandrea, M. N. Mondragon, Tommaso Dorigo, K. Gibson, Xin Wu, M. Feindt, H. Gerberich, P. Schlabach, G. A. Thompson, K. Ebina, A. Simonenko, L. B. Oakes, J. Thome, J. Lueck, F. Canelli, Robin Erbacher, M. Datta, Federico Sforza, J. Budagov, W-M. Yao, A. Napier, E. Thomson, Young-Jin Kim, P. Sinervo, M. Corbo, Y. C. Chen, G. L. Strycker, V. Papadimitriou, D. E. Pellett, A. Sukhanov, G. Chlachidze, E. Rogers, C. Calancha, A. Hocker, A. Cerri, D. Torretta, H. S. Kim, M. J. Shochet, Mario Campanelli, S. Amerio, Giovanni Bellettini, Matteo Cavalli-Sforza, V. A. Giakoumopoulou, M. H. Kirby, N. Ranjan, R. L. Lander, B. Auerbach, M. Rescigno, Justin Pilot, M. Mussini, T. Wakisaka, J. Antos, A. Hamaguchi, S. Carrillo, L. Santi, Stefano Zucchelli, Andrew Beretvas, C. Mesropian, D. J. Cox, Teresa Rodrigo, A. R. Clark, J. Asaadi, E. James, Naoki Kimura, D. Mietlicki, W.F. Badgett, J. S. Conway, James Russ, Giorgio Chiarelli, S. Y. Noh, Y. C. Yang, G. Volpi, Gervasio Gomez, A. Kasmi, F. Ptohos, Koji Yamamoto, B. Jayatilaka, S. Z. Shalhout, Kohei Yorita, Ulrich Husemann, A. Manousakis-Katsikakis, P. K. Teng, P. Movilla Fernandez, I. Oksuzian, R. Vilar, A. Rahaman, L. Demortier, Elisabetta Pianori, Jane Nachtman, T. J. Phillips, M. Gold, P. N. Dong, W. Ashmanskas, A. Pranko, Kevin Burkett, S. Lockwitz, Sudhir Malik, M. Vidal, R. Forrest, B. Di Ruzza, J. Morlock, Y. Seiya, Marco Trovato, Mahmoud I. Hussein, L. Pondrom, E. Wicklund, O. González, A. Di Canto, J. Kroll, Sally Seidel, M. Heck, Pavol Bartos, S. Leo, Patrizia Barria, Y. Nagai, Chi Lin, A. Barbaro-Galtieri, Manfred Paulini, G.V. Velev, Rainer Wallny, Rodolfo Carosi, Itsuo Nakano, Y. S. Chung, P. B. Renton, S. S. Yu, U. K. Yang, A. Savoy-Navarro, Ignacio Redondo, Mark Kruse, Alison Lister, T. G. Shears, Stefano Camarda, S. M. Wang, F. Happacher, J. R. Smith, Y. Zeng, Kai Yi, Dario Bisello, Jared Gregory Vasquez, A. Bhatti, Peter Wagner, A. Penzo, N. Moggi, Alan Garfinkel, J. Lys, Daryl Hare, Mauro Dell'Orso, H. S. Lee, Paolo Maestro, M. M. Deninno, Tomoko Yoshida, Cunming Liu, R. Roser, Ivan Vila, Y. Sakurai, Sebastian Grinstein, N. Ershaidat, Q. Liu, Alexei Safonov, V. V. Glagolev, P. McIntyre, G. Punzi, Stephan Lammel, O. Norniella, C. Pagliarone, R. McNulty, M. Hare, M. Tecchio, A. Varganov, Adrian Buzatu, Nicola D'Ascenzo, J. A. Appel, E. J. Jeon, A. T. Goshaw, Vyacheslav Krutelyov, G. Pauletta, D. W. Jang, R. St. Denis, M. E. Mattson, K. J. Knoepfel, I. Yu, H. S. Budd, D. Dagenhart, F. Azfar, W. H. Chung, Jmv Garcia, M. Hurwitz, D. Waters, D. Glenzinski, D. Yamato, Bernd Stelzer, S. R. Hou, S. Errede, Francesco Crescioli, Matthew Jones, R. Madrak, J. Naganoma, Paul Wilson, Eva Halkiadakis, Giorgio Apollinari, Sandra Leone, Luca Scodellaro, J. Boudreau, J. P. Fernandez, Maria Agnese Ciocci, P. Giromini, Koji Sato, Anna Zanetti, Roger Moore, D. O. Litvintsev, G. Compostella, W. K. Sakumoto, C. Grosso-Pilcher, N. Goldschmidt, T. Liu, T. Riddick, Mark Neubauer, R. Orava, G. Lungu, R. D. Field, B. Alvarez Gonzalez, J. S. H. Lee, R. Culbertson, I. Suslov, Sinead Farrington, S. Poprocki, A. T. Laasanen, A. Bodek, M. Stancari, A. Golossanov, Hirokazu Miyake, A. Scribano, P. Squillacioti, Kazuhiko Hara, K. Matera, P. Garosi, A. Anastassov, J. F. Patrick, M. Frank, S. Wolbers, Fedor Prokoshin, T. Okusawa, T. Bae, Michal Kreps, K. Potamianos, S. B. Kim, Fabrizio Scuri, J. Huston, D. Lucchesi, F. Devoto, S. Carron, Duncan Carlsmith, J. N. Bellinger, D. Horn, D. Tonelli, Jian Tang, S. H. Kim, Javier Cuevas, L. Ristori, Fumihiko Ukegawa, Hong Ye Song, V. Ramakrishnan, M. Shimojima, D. P. Benjamin, Joachim Heinrich, A. K. Mehta, A. Loginov, Andreas Warburton, G. B. Yu, S. Behari, Y. Funakoshi, Y. Kato, A. B. Wicklund, J. Guimaraes Da Costa, K. T. Pitts, Erik Brücken, I. V. Gorelov, Zhenbin Wu, E. E. Schmidt, D. Stentz, Th. Müller, K. Sliwa, Jacobo Konigsberg, S. Klimenko, N. Hussain, J. Vizán, R. F. Harr, R. E. Hughes, Daniel Whiteson, P. J. Bussey, F. Ruffini, Kevin Lannon, K. Tollefson, Guillelmo Gomez-Ceballos, I. K. Furic, L. Ortolan, A. V. Kotwal, I. Shreyber-Tecker, S. Pagan Griso, D. Amidei, and Massimo Casarsa
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Tevatron, State (functional analysis), 01 natural sciences, Luminosity, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Neutrino, 010306 general physics, Energy (signal processing), Lepton, Boson
Abstract: We present a search for new phenomena in events with two reconstructed $Z$ bosons and large missing transverse momentum, sensitive to processes $p\overline{p}\ensuremath{\rightarrow}{X}_{2}{X}_{2}\ensuremath{\rightarrow}ZZ{X}_{1}{X}_{1}$, where ${X}_{2}$ is an unstable particle decaying as ${X}_{2}\ensuremath{\rightarrow}Z{X}_{1}$ and ${X}_{1}$ is undetected. The particles ${X}_{1}$ and ${X}_{2}$ may be, among other possibilities, fourth-generation neutrinos or supersymmetric particles. We study the final state in which one $Z$ boson decays to two charged leptons and the second decays hadronically. In data corresponding to an integrated luminosity of $4.2\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ from proton-antiproton collisions recorded by the CDF II detector at the Tevatron, with center-of-mass energy of 1.96 TeV, we find agreement between data and standard-model backgrounds. We calculate 95% confidence level upper limits on the cross section of the process $p\overline{p}\ensuremath{\rightarrow}{X}_{2}{X}_{2}\ensuremath{\rightarrow}ZZ{X}_{1}{X}_{1}$ ranging from 50 fb to 1 pb, depending on the masses of ${X}_{1}$ and ${X}_{2}$.
Published: 2012
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33. Search forWZ+ZZproduction withmissing transverse energy+jetswithbenhancement ats=1.96 TeV

Author: M. Gold, L. Sartori, Gerry Bauer, P. Mehtala, M. Giunta, Tetsuo Arisawa, C. Neu, Emily Nurse, E. Gerchtein, S. Wolbers, Michal Kreps, S. Donati, Kenichi Hatakeyama, Alexander Paramonov, M. Franklin, D. Mietlicki, D. Waters, Vyacheslav Krutelyov, D. J. Kong, Evelyn Thomson, B. Carls, Fabrizio Scuri, V. Sorin, P. Lukens, B. Whitehouse, S. Y. Jun, L. Demortier, P. N. Dong, S. Tokar, S. Torre, A. Mitra, K. Ebina, F. Devoto, S. Carron, A. Eppig, Duncan Carlsmith, H. C. Fang, A. Artikov, Tara Shears, G. Piacentino, John Strologas, J. C. Freeman, J. Yoh, H. H. Williams, Matteo Bauce, G. Introzzi, M. N. Mondragon, C. A. Cox, Sergo Jindariani, Jacob Linacre, J. Antos, A. Ruiz, P. Totaro, Antonio Limosani, Matthew Jones, J. Budagov, T. Wakisaka, Chris Hays, Giuseppe Latino, Y. Takeuchi, Maxwell Chertok, J. S. Conway, G. Volpi, Gervasio Gomez, R. L. Lander, A. Savoy-Navarro, Nils Krumnack, J. Lueck, A. Scribano, Marcelo Vogel, A. Hamaguchi, R. F. Harr, Robin Erbacher, M. Datta, William Joseph Johnson, W-M. Yao, D. E. Pellett, R. L. Wagner, M. Hurwitz, V. Saveliev, J. Asaadi, E. James, Stephan Lammel, K. Tollefson, Naoki Kimura, K. Goulianos, Matthew Herndon, T. Kuhr, J. Yamaoka, Yoshikazu Nagai, A. N. Sissakian, I. Bizjak, W. Ketchum, Sandra Leone, M. K. Jha, Elliot Lipeles, H. Gerberich, S. Rolli, Benjamin Kilminster, Barry Blumenfeld, Fabrizio Margaroli, M. Weinberger, J. Keung, A. Mukherjee, Pavol Bartos, C. S. Moon, M. Cordelli, G. Busetto, Brian L Winer, E. J. Jeon, J. Thome, M. E. Mattson, Giovanni Bellettini, S. M. Wang, Tomoko Yoshida, Cunming Liu, P. Squillacioti, Kazuhiko Hara, P. de Barbaro, M. Bucciantonio, Franco Bedeschi, R. Forrest, Fedor Prokoshin, W. K. Sakumoto, F. Ptohos, Kai Yi, D. Toback, A. V. Kotwal, Mahmoud I. Hussein, S. Pagan Griso, A. Anastassov, J. F. Patrick, Jmv Garcia, Dean Hidas, Daryl Hare, V. V. Glagolev, J. Lys, Neubauer, R. Roser, Ivan Vila, C. P. Marino, L. B. Oakes, K. Potamianos, T. Miao, D. Chokheli, T. Okusawa, W. C. Wester, M. Kurata, Andrew Ivanov, M. H. Schmitt, A. Aurisano, K. Gibson, D. Beecher, Peter Wagner, M. M. Deninno, Hirokazu Miyake, P. Garosi, M. Frank, M. Rossi, Yuji Sudo, Tommaso Dorigo, M. Feindt, Xin Wu, C. Calancha, A. Hocker, P. Sinervo, Rainer Wallny, Mario Campanelli, P. Schlabach, Patrizia Barria, J. S. Wilson, Ciocci, Daniela Bortoletto, N. Giokaris, Lucio Cerrito, P. Movilla Fernandez, P. E. Karchin, Luca Scodellaro, J. P. Fernandez, P. Giromini, S. Amerio, A. Schmidt, F. Canelli, Christoph Paus, C. Pagliarone, S. B. Kim, J. P. Chou, G. Chlachidze, J. Morlock, B. Auerbach, V. Ramakrishnan, A. Simonenko, F. Rimondi, J. Thom, A. Sedov, C. Grosso-Pilcher, R. McNulty, M. Hare, M. Tecchio, R. St. Denis, A. Castro, G. De Lorenzo, J. Huston, J. Kroll, Adrian Buzatu, D. J. Cox, Anna Zanetti, A. Boveia, Christopher Clarke, Walter Hopkins, B. Di Ruzza, A. Cerri, V. Papadimitriou, D. Lucchesi, N. Goldschmidt, C. Ferrazza, Nicola D'Ascenzo, J. A. Appel, A. Varganov, Kevin Lannon, G. Pauletta, D. W. Jang, Aidan Robson, D. P. Benjamin, Joachim Heinrich, C. Deluca, Y. C. Yang, H. S. Kim, S. Carrillo, Amitabh Lath, J. N. Bellinger, S. Tkaczyk, R. Vilar, T. A. Schwarz, Elisabetta Pianori, Jane Nachtman, Virgil E Barnes, Chi Lin, Andrew Beretvas, D. Errede, J. Pursley, B. Jayatilaka, M. Binkley, Monica D'Onofrio, G. B. Yu, S. Behari, Y. Funakoshi, Y. Kato, D. Horn, Guillelmo Gomez-Ceballos, I. K. Furic, Y. S. Chung, D. Tonelli, A. Pranko, Kevin Burkett, Angela Mehta, Anna Sfyrla, Paola Giannetti, B. A. Barnett, L. Ortolan, C. M. Ginsburg, Mauro Dell'Orso, L. Ristori, C. Haber, O. Norniella, J. R. Smith, J. Guimaraes Da Costa, K. S. McFarland, K. R. Bland, K. T. Pitts, Jian Tang, P. F. Shepard, S. H. Oh, G. P. Yeh, S. H. Kim, I. Yu, W. H. Chung, L. Pondrom, E. Wicklund, Javier Cuevas, James Russ, Kohei Yorita, Ignacio Redondo, T. R. Junk, Sally Seidel, Teruki Kamon, T. Yang, P. Mazzanti, I. V. Gorelov, Zhenbin Wu, T. Wright, A. Penzo, T. Aaltonen, N. Moggi, A. Napier, Massimo Casarsa, Manuel Mussini, T. Tomura, A. Di Canto, G.V. Velev, K. K. Joo, Teresa Rodrigo, D. Krop, Allan G Clark, Roger Moore, D. O. Litvintsev, I. Oksuzian, Bruno Casal, Ricardo Eusebi, Bernd Stelzer, A. Brisuda, Marcel Michael Stanitzki, M. J. Kim, M. Heck, Roman Lysak, D. Amidei, G. Punzi, S. Leo, Jacobo Konigsberg, A. Barbaro-Galtieri, G. Giurgiu, A. Menzione, Francesco Rubbo, D. Cauz, Miriam Lucio Martinez, Kaori Maeshima, N. Hussain, T. J. Phillips, O. González, Itsuo Nakano, N. Ershaidat, Q. Liu, P. B. Renton, W. Badgett, S. S. Yu, Stefano Camarda, H. S. Budd, K. Takemasa, F. Vázquez, R. E. Hughes, E. Palencia, Maxim Goncharov, Aron Soha, Paolo Mastrandrea, Y. Zeng, S. De Cecco, Daniel Whiteson, M. Shimojima, F. Azfar, A. T. Laasanen, F. Ruffini, Y. D. Oh, E. Pueschel, M. H. Kirby, N. Ranjan, V. Rusu, G. A. Thompson, P. Wilson, Andreas Warburton, Stefano Zucchelli, M. Lancaster, C. Vellidis, G. Flanagan, E. Rogers, K. Makhoul, Manfred Paulini, H. S. Lee, Th. Müller, E. Lee, H. W. Kim, Matteo Cavalli-Sforza, Viviana Cavaliere, H. Wolfe, K. Sliwa, S. Z. Shalhout, S. Uozumi, S. Klimenko, S. W. Lee, D. Goldin, J. C. Yun, B. Alvarez Gonzalez, Oliver Stelzer-Chilton, Yongsun Kim, Artur Apresyan, S. Moed, Arie Bodek, P. Ttito-Guzmán, Federico Sforza, M. Lindgren, C. Cuenca Almenar, M. D'Errico, M. Corbo, Y. C. Chen, Kiminori Kondo, Y. Sakurai, A. Rahaman, Thomas LeCompte, M. E. Convery, J. Deng, L. Santi, Giorgio Chiarelli, G. L. Strycker, G. Manca, D. Dagenhart, M. J. Shochet, O. Poukhov, S. Budd, J. S. H. Lee, R. Culbertson, Rodolfo Carosi, U. K. Yang, Paul Lujan, I. Suslov, M. P. Schmidt, Samantha Hewamanage, F. Happacher, Sinead Farrington, Dario Bisello, A. Bhatti, M. Dorigo, P. J. Bussey, F. Wick, Frank Chlebana, S. Poprocki, Yuhai Tu, M. Stancari, P. Catastini, Fumihiko Ukegawa, A. Loginov, A. B. Wicklund, Erik Brücken, E. E. Schmidt, D. Stentz, A. Golossanov, C. Bromberg, J. Vizán, S. Shiraishi, S. Kwang, D. H. Kim, S. R. Hahn, A. T. Goshaw, J. D. Lewis, Z. Gunay-Unalan, D. Glenzinski, Katsufumi Sato, S. R. Hou, Alberto Annovi, S. Errede, Francesco Crescioli, R. Madrak, J. Naganoma, V. Khotilovich, Eva Halkiadakis, J. E. Kim, I. Shreyber, Giorgio Apollinari, L. Brigliadori, T. Rodriguez, Keunchang Cho, A. Elagin, A. Bocci, Jay Dittmann, Michele Gallinaro, Peter Wittich, M. Rescigno, Justin Pilot, V. A. Giakoumopoulou, Mark Kruse, Alison Lister, Sebastian Grinstein, J. Galyardt, A. Semenov, C. Plager, J. Nett, Stefano Giagu, Alexei Safonov, Scott Wilbur, M. Iori, Koji Yamamoto, Ulrich Husemann, A. Manousakis-Katsikakis, P. K. Teng, W. Ashmanskas, S. Lockwitz, Sudhir Malik, M. Vidal, Marco Trovato, S. Lami, S. Somalwar, C. I. Ciobanu, R. Martínez-Ballarín, D. Torretta, A. Sukhanov, C. Mesropian, A. Kasmi, Y. Seiya, Alan Garfinkel, P. McIntyre, P. Murat, T. Liu, L. Nodulman, J. O. Nielsen, M. J. Morello, F. D. Snider, J. Y. Han, T. Riddick, R. Orava, G. Lungu, R. D. Field, J. Boudreau, G. Compostella, and Mark Campbell
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Tevatron, Sigma, 01 natural sciences, Measure (mathematics), Standard Model, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Invariant mass, 010306 general physics, Energy (signal processing)
Abstract: Diboson production ($WW+WZ+ZZ$) has been observed at the Tevatron in hadronic decay modes dominated by the $WW$ process. This paper describes the measurement of the cross section of $WZ$ and $ZZ$ events in final states with large $\mett$ and using $b$-jet identification as a tool to suppress $WW$ contributions. Due to the limited energy resolution, we cannot distinguish between partially hadronic decays of $WZ$ and $ZZ$, and we measure the sum of these processes. The number of signal events is extracted using a simultaneous fit to the invariant mass distribution of the two jets for events with two $b$-jet candidates and events without two $b$-jet candidates. We measure a cross section $\sigma(p\bar{p}\to WZ,ZZ) = 5.8^{+3.6}_{-3.0}$ pb, in agreement with the standard model.
Published: 2012
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34. Measurement of the B- Lifetime Using a Simulation Free Approach for Trigger Bias Correction

Author: Pm Fernandez, J. M. Heuser, M. N. Mondragon, L Williams, A. Di Canto, Corrinne Mills, J. Lueck, D. E. Pellett, A. Sukhanov, Hahn, E. Brubaker, Chris Hays, P. B. Renton, A Vicere, G. Piacentino, S. S. Yu, Stefano Camarda, J Veitch, Y. Zeng, D. Krop, O Torre, S. Torre, B Shapiro, E Thrane, K. Ebina, T. Davies, M.G. Schmidt, A. Semenov, M. Hurwitz, M. Rescigno, C Wilkinson, Pa. Willems, R. L. Ward, A. Gresele, A. Savoy-Navarro, F. Ptohos, A. Mitra, A Vecchio, B. J. J. Slagmolen, C. Plager, Ae Villar, C. S. Hill, T. Tomura, J. Kroll, T. Wakisaka, Sandra Leone, M. Hartz, G. Flanagan, E. Lee, A Singer, Artur Apresyan, S. Moed, Kiminori Kondo, F. Vázquez, J. Nett, Y. S. Chung, Maxwell Chertok, Stefano Giagu, L. Lovas, At Laasanen, Jonas Rademacker, Martin, H. Gerberich, D. Mietlicki, W.F. Badgett, D. Waters, P. J. Sutton, Nils Krumnack, C. C. Wipf, Kai Yi, Pavol Bartos, Gp Yeh, L Turner, Rms Schofield, J. Lys, A. Scribano, I. Bizjak, Neubauer, P Thomas, Matthew Jones, B. Rutherford, Roger Moore, C. Calancha, S.-C. Hsu, F. Garberson, S. W. Lee, A. Hocker, Frank Chlebana, Gl Strycker, Dean Hidas, G. Giurgiu, L. Demortier, D. Beecher, Peter Wagner, R. Roser, Ivan Vila, C. S. Moon, Daryl Hare, N. Ranjan, P. N. Dong, R. F. Harr, D. O. Litvintsev, P Wessels, N. Van Remortel, J. S. Conway, Kevin Lannon, G. Volpi, Gervasio Gomez, Da Shaddock, P. Squillacioti, Kazuhiko Hara, Stefano Zucchelli, L. Pinera, Stephan Lammel, Roman Lysak, Luca Scodellaro, K. L. Byrum, Guenakh Mitselmakher, C. P. Marino, J. Antos, I. Lazzizzera, Hs Budd, A. Anastassov, A. Simonenko, Louis Lyons, Jacobo Konigsberg, C. Pagliarone, P. Giromini, Koji Sato, Anna Zanetti, S. Malde, S. Pashapour, A Wanner, N. Turini, P. J. Bussey, S. Cabrera, Mark Kruse, M. M. Deninno, P. Ttito-Guzmán, M. Lindgren, K. Nakamura, Thomas LeCompte, G. Manca, N. Miladinovic, J Slutsky, R Weiss, P Wei, Ba Gonzalez, T Westphal, B Swinkels, M. Cordelli, G. Busetto, Alison Lister, Gp Szokoly, M West, K Wette, L. B. Oakes, P. Sinervo, H Vocca, Mario Campanelli, D. W. Gerdes, J. Asaadi, Joe Incandela, P. Totaro, Emily Nurse, Guillelmo Gomez-Ceballos, I. K. Furic, Giakoumopoulou, Yuhai Tu, K. V. Tokmakov, A. Robson, E. J. Jeon, Mv van der Sluys, Fedor Prokoshin, A. J. Slaughter, S. Amerio, A Thuring, Adrian Buzatu, Andrey Korytov, Elisabetta Pianori, Jane Nachtman, Kevin Burkett, Ramakrishnan, Hugh Williams, M. J. Shochet, Wk Sakumoto, Ignacio Redondo, Hyun-Chul Kim, C. Grosso-Pilcher, Je Jung, Re Hughes, N. Goldschmidt, C Veltkamp, M Vavoulidis, A Toncelli, S. P. Tarabrin, Alberto Annovi, P. J. Veitch, E. James, Naoki Kimura, S. Wolbers, M. E. Mattson, C Titsler, S. De Cecco, R. G. Wagner, J. Weinelt, H Yamamoto, T. Okusawa, Shinhong Kim, D. J. Kong, Krutelyov, M Trias, B. Carls, O. Poukhov, H. C. Fang, Jacob Linacre, Glagolev, P. Lukens, Andrew Beretvas, T. Kuhr, Mahmoud I. Hussein, D Ugolini, R. Denis, G Traylor, Michal Kreps, G. De Lorenzo, J. Huston, N. Ershaidat, Alexei Safonov, D. J. Cox, S. 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ZUCCHELLI, Universidad de Cantabria, Aaltonen, T, Adelman, J, Gonzalez, Ba, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Appel, J, Apresyan, A, Arisawa, T, Artikov, A, Asaadi, J, Ashmanskas, W, Attal, A, Aurisano, A, Azfar, F, Badgett, W, Barbaro Galtieri, A, Barnes, Ve, Barnett, Ba, Barria, P, Bartos, P, Bauer, G, Beauchemin, Ph, Bedeschi, F, Beecher, D, Behari, S, Bellettini, G, Bellinger, J, Benjamin, D, Beretvas, A, Bhatti, A, Binkley, M, Bisello, D, Bizjak, I, Blair, Re, Blocker, C, Blumenfeld, B, Bocci, A, Bodek, A, Boisvert, V, Bortoletto, D, Boudreau, J, Boveia, A, Brau, B, Bridgeman, A, Brigliadori, L, Bromberg, C, Brubaker, E, Budagov, J, Budd, H, Budd, S, Burkett, K, Busetto, G, Bussey, P, Buzatu, A, Byrum, Kl, Cabrera, S, Calancha, C, Camarda, S, Campanelli, M, Campbell, M, Canelli, F, Canepa, A, Carls, B, Carlsmith, D, Carosi, R, Carrillo, S, Carron, S, Casal, B, Casarsa, M, Castro, A, Catastini, P, Cauz, D, Cavaliere, V, Cavalli Sforza, M, Cerri, A, Cerrito, L, Chang, Sh, Chen, Yc, Chertok, M, Chiarelli, G, Chlachidze, G, Chlebana, F, Cho, K, Chokheli, D, Chou, Jp, Chung, K, Chung, Wh, Chung, Y, Chwalek, T, Ciobanu, Ci, Ciocci, Ma, Clark, A, Clark, D, Compostella, G, Convery, Me, Conway, J, Corbo, M, Cordelli, M, Cox, Ca, Cox, Dj, Crescioli, F, Almenar, Cc, Cuevas, J, Culbertson, R, Cully, Jc, Dagenhart, D, D'Ascenzo, N, Datta, M, Davies, T, de Barbaro, P, De Cecco, S, Deisher, A, De Lorenzo, G, Dell'Orso, M, Deluca, C, Demortier, L, Deng, J, Deninno, M, D'Errico, M, Di Canto, A, Di Ruzza, B, Dittmann, Jr, D'Onofrio, M, Donati, S, Dong, P, Dorigo, T, Dube, S, Ebina, K, Elagin, A, Erbacher, R, Errede, D, Errede, S, Ershaidat, N, Eusebi, R, Fang, Hc, Farrington, S, Fedorko, Wt, Feild, Rg, Feindt, M, Fernandez, Jp, Ferrazza, C, Field, R, Flanagan, G, Forrest, R, Frank, Mj, Franklin, M, Freeman, Jc, Furic, I, Gallinaro, M, Galyardt, J, Garberson, F, Garcia, Je, Garfinkel, Af, Garosi, P, Gerberich, H, Gerdes, D, Gessler, A, Giagu, S, Giakoumopoulou, V, Giannetti, P, Gibson, K, Gimmell, Jl, Ginsburg, Cm, Giokaris, N, Giordani, M, Giromini, P, Giunta, M, Giurgiu, G, Glagolev, V, Glenzinski, D, Gold, M, Goldschmidt, N, Golossanov, A, Gomez, G, Gomez Ceballos, G, Goncharov, M, Gonzalez, O, Gorelov, I, Goshaw, At, Goulianos, K, Gresele, A, Grinstein, S, Grosso Pilcher, C, Group, Rc, Grundler, U, da Costa, Jg, Gunay Unalan, Z, Haber, C, Hahn, Sr, Halkiadakis, E, Han, By, Han, Jy, Happacher, F, Hara, K, Hare, D, Hare, M, Harr, Rf, Hartz, M, Hatakeyama, K, Hays, C, Heck, M, Heinrich, J, Herndon, M, Heuser, J, Hewamanage, S, Hidas, D, Hill, C, Hirschbuehl, D, Hocker, A, Hou, S, Houlden, M, Hsu, Sc, Hughes, Re, Huffman, Bt, Hurwitz, M, Husemann, U, Hussein, M, Huston, J, Incandela, J, Introzzi, G, Iori, M, Ivanov, A, James, E, Jang, D, Jayatilaka, B, Jeon, Ej, Jha, Mk, Jindariani, S, Johnson, W, Jones, M, Joo, Kk, Jun, Sy, Jung, Je, Junk, Tr, Kamon, T, Kar, D, Karchin, Pe, Kato, Y, Kephart, R, Ketchum, W, Keung, J, Khotilovich, V, Kilminster, B, Kim, Dh, Kim, H, Kim, Hw, Kim, Je, Kim, Mj, Kim, Sb, Kim, Sh, Kim, Yk, Kimura, N, Kirsch, L, Klimenko, S, Kondo, K, Kong, Dj, Konigsberg, J, Korytov, A, Kotwal, Av, Kreps, M, Kroll, J, Krop, D, Krumnack, N, Kruse, M, Krutelyov, V, Kuhr, T, Kulkarni, Np, Kurata, M, Kwang, S, Laasanen, At, Lami, S, Lammel, S, Lancaster, M, Lander, Rl, Lannon, K, Lath, A, Latino, G, Lazzizzera, I, Lecompte, T, Lee, E, Lee, H, Lee, J, Lee, Sw, Leone, S, Lewis, Jd, Lin, Cj, Linacre, J, Lindgren, M, Lipeles, E, Lister, A, Litvintsev, Do, Liu, C, Liu, T, Lockyer, N, Loginov, A, Lovas, L, Lucchesi, D, Lueck, J, Lujan, P, Lukens, P, Lungu, G, Lyons, L, Lys, J, Lysak, R, Macqueen, D, Madrak, R, Maeshima, K, Makhoul, K, Maksimovic, P, Malde, S, Malik, S, Manca, G, Manousakis Katsikakis, A, Margaroli, F, Marino, C, Marino, Cp, Martin, A, Martin, V, Martinez, M, Martinez Ballarin, R, Mastrandrea, P, Mathis, M, Mattson, Me, Mazzanti, P, Mcfarland, K, Mcintyre, P, Mcnulty, R, Mehta, A, Mehtala, P, Menzione, A, Mesropian, C, Miao, T, Mietlicki, D, Miladinovic, N, Miller, R, Mills, C, Milnik, M, Mitra, A, Mitselmakher, G, Miyake, H, Moed, S, Moggi, N, Mondragon, Mn, Moon, C, Moore, R, Morello, MICHAEL JOSEPH, Morlock, J, Fernandez, Pm, Mulmenstadt, J, Mukherjee, A, Muller, T, Murat, P, Mussini, M, Nachtman, J, Nagai, Y, Naganoma, J, Nakamura, K, Nakano, I, Napier, A, Nett, J, Neu, C, Neubauer, M, Neubauer, S, Nielsen, J, Nodulman, L, Norman, M, Norniella, O, Nurse, E, Oakes, L, Oh, Sh, Oh, Yd, Oksuzian, I, Okusawa, T, Orava, R, Osterberg, K, Griso, Sp, Pagliarone, C, Palencia, E, Papadimitriou, V, Papaikonomou, A, Paramanov, Aa, Parks, B, Pashapour, S, Patrick, J, Pauletta, G, Paulini, M, Paus, C, Peiffer, T, Pellett, De, Penzo, A, Phillips, Tj, Piacentino, G, Pianori, E, Pinera, L, Pitts, K, Plager, C, Pondrom, L, Potamianos, K, Poukhov, O, Pounder, Nl, Prokoshin, F, Pronko, A, Ptohos, F, Pueschel, E, Punzi, G, Pursley, J, Rademacker, J, Rahaman, A, Ramakrishnan, V, Ranjan, N, Redondo, I, Renton, P, Renz, M, Rescigno, M, Richter, S, Rimondi, F, Ristori, L, Robson, A, Rodrigo, T, Rodriguez, T, Rogers, E, Rolli, S, Roser, R, Rossi, M, Rossin, R, Roy, P, Ruiz, A, Russ, J, Rusu, V, Rutherford, B, Saarikko, H, Safonov, A, Sakumoto, Wk, Santi, L, Sartori, L, Sato, K, Saveliev, V, Savoy Navarro, A, Schlabach, P, Schmidt, A, Schmidt, Ee, Schmidt, Ma, Schmidt, Mp, Schmitt, M, Schwarz, T, Scodellaro, L, Scribano, A, Scuri, F, Sedov, A, Seidel, S, Seiya, Y, Semenov, A, Sexton Kennedy, L, Sforza, F, Sfyrla, A, Shalhout, Sz, Shears, T, Shepard, Pf, Shimojima, M, Shiraishi, S, Shochet, M, Shon, Y, Shreyber, I, Simonenko, A, Sinervo, P, Sisakyan, A, Slaughter, Aj, Slaunwhite, J, Sliwa, K, Smith, Jr, Snider, Fd, Snihur, R, Soha, A, Somalwar, S, Sorin, V, Squillacioti, P, Stanitzki, M, Denis, R, Stelzer, B, Stelzer Chilton, O, Stentz, D, Strologas, J, Strycker, Gl, Suh, J, Sukhanov, A, Suslov, I, Taffard, A, Takashima, R, Takeuchi, Y, Tanaka, R, Tang, J, Tecchio, M, Teng, Pk, Thom, J, Thome, J, Thompson, Ga, Thomson, E, Tipton, P, Ttito Guzman, P, Tkaczyk, S, Toback, D, Tokar, S, Tollefson, K, Tomura, T, Tonelli, D, Torre, S, Torretta, D, Totaro, P, Trovato, M, Tsai, Sy, Tu, Y, Turini, N, Ukegawa, F, Uozumi, S, van Remortel, N, Varganov, A, Vataga, E, Vazquez, F, Velev, G, Vellidis, C, Vidal, M, Vila, I, Vilar, R, Vogel, M, Volobouev, I, Volpi, G, Wagner, P, Wagner, Rg, Wagner, Rl, Wagner, W, Wagner Kuhr, J, Wakisaka, T, Wallny, R, Wang, Sm, Warburton, A, Waters, D, Weinberger, M, Weinelt, J, Wester, Wc, Whitehouse, B, Whiteson, D, Wicklund, Ab, Wicklund, E, Wilbur, S, Williams, G, Williams, Hh, Wilson, P, Winer, Bl, Wittich, P, Wolbers, S, Wolfe, C, Wolfe, H, Wright, T, Wu, X, Wurthwein, F, Yagil, A, Yamamoto, K, Yamaoka, J, Yang, Uk, Yang, Yc, Yao, Wm, Yeh, Gp, Yi, K, Yoh, J, Yorita, K, Yoshida, T, Yu, Gb, Yu, I, Yu, S, Yun, Jc, Zanetti, A, Zeng, Y, Zhang, X, Zheng, Y, Zucchelli, S., Clark, Allan Geoffrey, Garcia Navarro, Jose Enrique, Lister, Alison, and Wu, Xin
Subjects: HADRONIC COLLISIONS, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, FOS: Physical sciences, ddc:500.2, CROSS-SECTION, CP-VIOLATION, CDF, EVENT, QCD, 01 natural sciences, High Energy Physics - Experiment, B LIFETIME, High Energy Physics - Experiment (hep-ex), 13. Climate action, 0103 physical sciences, Bias correction, High Energy Physics::Experiment, 010306 general physics, TEVATRON
Abstract: 30 páginas, 12 figuras, 8 tablas.-- PACS numbers: 14.40Nd;13.25.Hw;29.85.Fj.-- CDF Collaboration: et al., The collection of a large number of B-hadron decays to hadronic final states at the CDF II Detector is possible due to the presence of a trigger that selects events based on track impact parameters. However, the nature of the selection requirements of the trigger introduces a large bias in the observed proper-decay-time distribution. A lifetime measurement must correct for this bias, and the conventional approach has been to use a Monte Carlo simulation. The leading sources of systematic uncertainty in the conventional approach are due to differences between the data and the Monte Carlo simulation. In this paper, we present an analytic method for bias correction without using simulation, thereby removing any uncertainty due to the differences between data and simulation. This method is presented in the form of a measurement of the lifetime of the B- using the mode B-→D0π-. The B- lifetime is measured as τB-=1.663±0.023±0.015 ps, where the first uncertainty is statistical and the second systematic. This new method results in a smaller systematic uncertainty in comparison to methods that use simulation to correct for the trigger bias., This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium f¨ur Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, UK; the Institut National de Physique Nucleaire et Physique des Particules/ CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland.
Published: 2011

35. Study of the associated production of photons andb-quark jets inpp¯collisions ats=1.96 TeV

Author: M. Jones, A. V. Kotwal, S. Rolli, Tara Shears, Massimo Casarsa, V. Papadimitriou, M. S. Neubauer, M. Hurwitz, C. Calancha, Koji Yamamoto, V. Rusu, B. Carls, J. Slaunwhite, D. Gerdes, P. K. Teng, J. Asaadi, C. Pagliarone, P. Barria, Marcelo Vogel, K. Tollefson, W. Ashmanskas, U. Grundler, C. Hays, R. Culbertson, M. Vidal, I. Furic, A. Anastassov, S. Donati, M. Hussein, C. J. Lin, F. Garberson, S. Lami, A. Artikov, D. Glenzinski, S. B. Kim, B. Whitehouse, R. Martínez-Ballarín, Stanislav Tokár, C. Paus, T. Tomura, E. Halkiadakis, Adrian Buzatu, Jahred Adelman, E. Pueschel, V. Boisvert, L. Nodulman, S. Malde, Kai Yi, E. Rogers, G. Velev, C. A. Cox, T. Davies, Virgil E Barnes, Ivan Vila, C. S. Hill, S. Y. Jun, A. Korytov, P. Giromini, G. Mitselmakher, L. Brigliadori, R. E. Hughes, N. Van Remortel, Andrew Ivanov, S. Jindariani, K. Potamianos, G. A. Thompson, J. Konigsberg, P. Renton, B. Parks, L. Ristori, Scott Hsu, S. Behari, J. Boudreau, K. L. Byrum, M. J. Morello, Daniela Bortoletto, T. J. Phillips, M. Binkley, Mario Campanelli, O. Poukhov, G. Punzi, A. Elagin, Anyes Taffard, G. Bauer, A. Ruiz, T. Wright, Jay Dittmann, A. Soha, C. P. Marino, L. Sexton-Kennedy, S. Carrillo, D. Hirschbuehl, G. Gomez, K. Hara, K. Hatakeyama, K. S. McFarland, M. D'Errico, L. Lovas, I. Oksuzian, M. Campbell, L. Pinera, C. Vellidis, V. Ramakrishnan, W. T. Fedorko, E. Wicklund, J. Huston, J. Cuevas, P. McIntyre, L. Sartori, R. L. Wagner, T. Aaltonen, I. Redondo, Satoru Uozumi, S. Z. Shalhout, S. Wolbers, G. Compostella, A. Safonov, Robin Erbacher, M. Datta, N. Goldschmidt, J. Morlock, E. E. Schmidt, I. Shreyber, M. Giordani, A. Scribano, G. Lungu, Y. D. Oh, K. Goulianos, S. Lammel, W-M. Yao, H. Miyake, A. Schmidt, J. Deng, T. A. Schwarz, Monica D'Onofrio, M. Heck, V. Martin, H. S. Budd, Peter Wittich, Th. Müller, T. Kamon, D. Amidei, A. T. Goshaw, E. J. Jeon, C. M. Ginsburg, K. Gibson, J. Yamaoka, Barry Blumenfeld, S. Seidel, S. Budd, P. Squillacioti, Y. S. Chung, H. H. Williams, C. Mesropian, K. Ebina, A. Attal, A. Savoy-Navarro, D. J. Cox, S. Tourneur, R. Snihur, B. Kilminster, A. Lath, A. Di Canto, S. Shiraishi, L. Pondrom, Jeannine Wagner-Kuhr, P. Roy, M. Hartz, E. Palencia, Maxim Goncharov, G. Giurgiu, J. C. Cully, Y. Zheng, P. E. Karchin, J. D. Lewis, M. E. Mattson, M. P. Schmidt, Kohei Yorita, P. de Barbaro, Kevin Lannon, J. Heinrich, Y. Tu, T. Wakisaka, J. E. Jung, S. R. Hou, S. Errede, Francesco Crescioli, A. Simonenko, C. S. Moon, R. Takashima, M. Giunta, J. Tang, A. N. Sisakyan, V. Giakoumopoulou, W. Badgett, Franco Bedeschi, T. Rodrigo, M. Lancaster, J. C. Yun, I. Nakano, M. Cordelli, G. Busetto, Brian L Winer, P. Lukens, D. Beecher, Peter Wagner, A. Semenov, V. Cavaliere, A. Penzo, Oliver Stelzer-Chilton, P. Movilla Fernandez, M. N. Mondragon, M. Mathis, Yongsun Kim, Frank Chlebana, F. Ptohos, B. Rutherford, F. Rimondi, R. G. Wagner, D. Torretta, N. P. Kulkarni, A. F. Garfinkel, A. Rahaman, Jonas Rademacker, D. Tonelli, H. W. Kim, S. Pashapour, Michal Kreps, D. Toback, J. Patrick, M. Shimojima, J. Galyardt, G. Piacentino, P. Mastrandrea, C. Grosso-Pilcher, K. Pitts, T. Peiffer, J. P. Chou, J. Budagov, R. Madrak, S. Wilbur, M. Gold, Alberto Annovi, B. Di Ruzza, Rainer Wallny, P. Murat, C. Wolfe, J. Mülmenstädt, I. Lazzizzera, M. Corbo, W. Johnson, Y. C. Chen, Jason Nielsen, R. F. Harr, Guillelmo Gomez-Ceballos, J. Antos, M. Feindt, C. Haber, Giorgio Chiarelli, M. Herndon, A. Napier, R. Field, Andrea Bocci, L. Kirsch, M. Kurata, Giovanni Bellettini, N. Kimura, Andreas Warburton, P. Catastini, E. Brubaker, Tommaso Dorigo, A. G. Clark, F. Happacher, A. Robson, S. S. Yu, B. Casal, M. J. Kim, D. Clark, C. Bromberg, A. Deisher, S. W. Lee, Jongseok Lee, V. Krutelyov, T. Kuhr, A. Hocker, M. Shochet, G. Chlachidze, T. Okusawa, Avraham Yagil, S. Torre, Jane Nachtman, T. Liu, Intae Yu, V. Sorin, R. Vilar, J. R. Smith, Y. Zeng, K. Makhoul, J. P. Fernandez, T. Miao, Mark Kruse, E. Lipeles, Z. Gunay-Unalan, P. Lujan, T. Lecompte, J. N. Bellinger, H. Saarikko, S. Giagu, P. Ttito-Guzmán, A. Canepa, Paul Tipton, Kyung-Suk Cho, G. B. Yu, M. K. Jha, C. Cuenca Almenar, G. Latino, M. M. Deninno, D. Kar, Mauro Dell'Orso, Sebastian Grinstein, O. Norniella, D. H. Kim, L. Santi, M. J. Frank, Wolfgang Wagner, Y. C. Yang, A. A. Paramanov, E. Vataga, M. Hare, Petar Maksimovic, E. Pianori, A. Barbaro-Galtieri, Jacob Linacre, A. Gessler, Frank Würthwein, D. Mietlicki, H. Gerberich, A. Pronko, J. Yoh, D. Hare, P. Totaro, Lucio Cerrito, R. Miller, Thorsten Chwalek, N. Ershaidat, Andrea Castro, A. Sfyrla, M. Milnik, K. Kondo, R. G. Feild, D. Chokheli, G. Williams, Kevin Burkett, W. K. Sakumoto, R. Rossin, J. Thome, C. Ferrazza, A. Golossanov, L. Demortier, S. Dube, Bernd Stelzer, R. L. Lander, J. Y. Han, T. Rodriguez, S. Richter, S. Moed, B. A. Barnett, S. Somalwar, Giorgio Apollinari, A. Mitra, P. Mazzanti, Song-Ming Wang, Maxwell Chertok, D. E. Pellett, S. Zucchelli, R. E. Blair, D. O. Litvintsev, M. Paulini, J. Keung, B. Álvarez González, M. Franklin, R. St. Denis, P. N. Dong, N. Ranjan, D. Lucchesi, A. Apresyan, A. Sukhanov, F. Azfar, D. MacQueen, D. Waters, N. Moggi, Andrew Beretvas, V. Glagolev, S. De Cecco, A. Mukherjee, D. Krop, P. J. Bussey, Xin Wu, R. McNulty, I. Bizjak, Maarten Schmidt, S. Kwang, Tetsuo Arisawa, C. Neu, Craig Blocker, D. Cauz, P. Schlabach, J. Pursley, P. Mehtala, G. P. Di Giovanni, S. Amerio, T. R. Junk, K. Chung, J. C. Freeman, M. Tecchio, J. E. Garcia, H. S. Lee, M. Lindgren, K. Sliwa, R. Orava, Rodolfo Carosi, Fumihiko Ukegawa, F. Canelli, N. S. Lockyer, E. Thomson, U. K. Yang, K. Maeshima, R. Kephart, G. Pauletta, G. Flanagan, S. Leone, B. Brau, D. J. Kong, A. Lister, A. Menzione, M. E. Convery, Luca Scodellaro, A. J. Slaughter, G. Manca, K. Sato, P. Wilson, M. Rossi, A. Loginov, M. Stanitzki, J. Kroll, S. R. Hahn, E. Lee, M. Martínez, Anna Zanetti, A. Varganov, Y. Shon, Matteo Cavalli-Sforza, A. B. Wicklund, K. Nakamura, H. Wolfe, J. Nett, Michael L. Norman, Julia Thom, Nicola Turini, J. Incandela, Dario Bisello, A. Bhatti, C. I. Ciobanu, K. Osterberg, Federico Sforza, R. Forrest, P. Sinervo, S. Tkaczyk, K. K. Joo, P. F. Shepard, D. Stentz, D. Dagenhart, Y. Nagai, C. Mills, J. Lys, J. S. Suh, Reisaburo Tanaka, Guido Volpi, G. P. Yeh, O. González, A. Manousakis-Katsikakis, A. T. Laasanen, J. Conway, S. H. Oh, M. Weinberger, J. Heuser, S. Y. Tsai, A. Bridgeman, M. Iori, U. Husemann, R. Moore, S. Cabrera, B. Jayatilaka, J. Strologas, L. Oakes, E. Nurse, A. Aurisano, Antonio Boveia, X. Zhang, M. Trovato, Pavol Bartos, A. Papaikonomou, F. D. Snider, Maria Agnese Ciocci, Dean Hidas, P. Giannetti, J. Guimaraes da Costa, M. Gallinaro, A. Mehta, J. Lueck, N. Giokaris, C. Deluca, S. H. Kim, S. Carron, S. Malik, Duncan Carlsmith, Tomoko Yoshida, Cunming Liu, M. H. Schmitt, J. Naganoma, P. H. Beauchemin, S. Hewamanage, W. H. Chung, A. Gresele, F. Vázquez, S. Klimenko, R. Eusebi, F. Scuri, R. Lysak, A. Sedov, Stefano Camarda, V. Khotilovich, J. Russ, Daniel Whiteson, Fedor Prokoshin, C. Plager, B. Y. Han, M. Renz, G. De Lorenzo, D. Jang, D. P. Benjamin, D. Errede, W. Ketchum, Y. Kato, P. Garosi, J. Weinelt, I. Suslov, A. Martin, Sinead Farrington, I. V. Gorelov, G. Introzzi, M. A. Houlden, H. C. Fang, A. Bodek, J. L. Gimmell, J. E. Kim, N. Krumnack, M. Mussini, Shih-Fu Chang, Alessandro Cerri, S. Neubauer, M. Rescigno, S. Pagan Griso, Igor Volobouev, R. Roser, F. Margaroli, Y. Takeuchi, H. S. Kim, Y. Seiya, W. C. Wester, G. L. Strycker, E. James, and N. Miladinovic
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Proton, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Order (ring theory), Elementary particle, Jet (particle physics), 01 natural sciences, Bottom quark, Nuclear physics, Antiproton, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing)
Abstract: The cross section for photon production in association with at least one jet containing a b quark has been measured in proton antiproton collisions at {radical}(s)=1.96 TeV. The data sample used corresponds to an integrated luminosity of 340 pb{sup -1} collected with the CDF II detector. Both the differential cross section as a function of photon transverse energy E{sub T}{sup {gamma}}and the total cross section are measured and compared to a next-to-leading order prediction for the process.
Published: 2010
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36. Measurement of the inclusive isolated prompt photon cross section inpp¯collisions ats=1.96 TeVusing the CDF detector

Author: F. Rimondi, R. Kephart, G. Introzzi, J. Russ, C. Plager, N. Moggi, Lucio Cerrito, Sergo Jindariani, D. Krop, D. Amidei, M. Herndon, Tetsuo Arisawa, D. Toback, M. Weinberger, P. Tipton, J. R. Smith, C. Henderson, D. J. Cox, A. Artikov, J. Budagov, K. Pitts, Massimo Casarsa, Christopher Hill, S. C. Hsu, A. Hocker, D. Glenzinski, D. Waters, Katsufumi Sato, S. Pagan Griso, Barry Blumenfeld, Michael L. Norman, R. Vilar, W. Johnson, C. Calancha, B. Jayatilaka, Jeannine Wagner-Kuhr, E. Wicklund, J. Patrick, H. S. Budd, S. R. Hou, S. Errede, R. Madrak, G. Williams, Corrinne Mills, R. Culbertson, A. Varganov, E. J. Jeon, Julia Thom, J. Rademacker, J. Naganoma, T. Peiffer, M. P. Schmidt, J. Keung, K. Hatakeyama, S. Kwang, D. H. Kim, R. J. Miller, S. Pashapour, L. Pinera, Eva Halkiadakis, S. Seidel, J. D. Lewis, C. A. Cox, S. De Cecco, Frank Chlebana, D. Stentz, V. Khotilovich, Virgil E Barnes, A. Mukherjee, O. Poukhov, J. L. Gimmell, N. Ranjan, N. Turini, D. Mietlicki, I. Oksuzian, A. A. Paramanov, V. Ramakrishnan, G. Flanagan, C. S. Moon, F. Happacher, J. Weinelt, H. Saarikko, M. Gallinaro, K. Lannon, Roger Moore, D. O. Litvintsev, V. Glagolev, J. P. Fernandez, M. S. Neubauer, V. Rusu, A. Barbaro-Galtieri, L. Demortier, T. Wright, P.K. Sinervo, S. Somalwar, Andrea Bocci, R. G. Feild, Alberto Annovi, F. Prokoshin, N. Goldschmidt, M. Cordelli, G. Busetto, S. Rolli, C. Pagliarone, Y. Seiya, A. Soha, N. Van Remortel, Pavol Bartos, A. Gresele, L. Brigliadori, Christina Mesropian, L. Sexton-Kennedy, Elliot Lipeles, E. Rogers, J. Conway, J. Lys, R. Roser, Ivan Vila, P. Squillacioti, A. Schmidt, T. Aaltonen, H. H. Williams, Marcel Michael Stanitzki, R. G. Wagner, M. J. Kim, P. Ttito-Guzmán, Y. D. Oh, Y. Kato, Kyung-Suk Cho, E. Lee, Petar Maksimovic, T. Kuhr, M. Goncharov, J. Guimaraes da Costa, H. Wolfe, C. M. Ginsburg, A. Martin, B. Brau, S. Tkaczyk, A. Di Canto, P. H. Beauchemin, R. Forrest, J. Thome, S. Moed, A. Mitra, A. Napier, G. Manca, A. B. Wicklund, Jay Dittmann, J. C. Cully, P. Schlabach, G. Volpi, D. Torretta, Giovanni Bellettini, B. Kilminster, J. S. H. Lee, M. E. Convery, G. P. Yeh, K. L. Byrum, A. Bridgeman, E. Pianori, E. James, V. Boisvert, F. Vázquez, D. J. Kong, B. Stelzer, Intae Yu, L. Santi, S. Richter, M. J. Frank, T. Wakisaka, K. Osterberg, M. D'Errico, Andrey Korytov, Y. K. Kim, A. Taffard, P. Giromini, Y. C. Yang, Georgios Choudalakis, Anna Zanetti, B. Parks, S. Shiraishi, S. Neubauer, J. E. Kim, P. Lukens, P. Roy, J. E. Jung, V. Giakoumopoulou, W. H. Chung, H. S. Kim, K. Nakamura, O. Norniella, G. P. Di Giovanni, Chris Hays, A. Sisakyan, J. Morlock, M. N. Mondragon, P. Movilla Fernandez, A. Elagin, J. Lueck, S. Torre, J. Tang, I. Bizjak, J. P. Chou, S. Amerio, S. Budd, T. Chwalek, A. T. Goshaw, A. Sedov, B. Di Ruzza, Paul Lujan, Joe Incandela, T. Rodrigo, L. Oakes, G. Gomez-Ceballos, Z. Gunay-Unalan, Andrew Beretvas, Mahmoud I. Hussein, M. Tecchio, A. Aurisano, J. Slaunwhite, Antonio Boveia, X. Zhang, K. Ebina, J. Linacre, L. Sartori, D. Errede, E. Brubaker, Vyacheslav Krutelyov, E. Thomson, J. S. Suh, M. Houlden, I. Redondo, S. Tokar, M. Martinez, Chi Lin, J. Strologas, R. Orava, Jason Nielsen, T. R. Junk, A. T. Laasanen, S. Zucchelli, Jochen Jens Heinrich, R. E. Blair, A. G. Clark, B. Casal, C. P. Marino, A. Safonov, G. A. Thompson, Jane Nachtman, Kohei Yorita, A. Savoy-Navarro, A. Ivanov, A. Simonenko, Rainer Wallny, P. Wittich, Maria Agnese Ciocci, T. Yoshida, J. Nett, J. Huston, Stefano Giagu, D. Tonelli, M. Hurwitz, Roman Lysak, S. Donati, M. Shimojima, S. Malde, B. Carls, M. Franklin, U. Grundler, G. B. Yu, S. Tourneur, R. L. Wagner, A. Penzo, P. Catastini, W. T. Fedorko, C. Bromberg, A. Deisher, Amitabh Lath, S. B. Kim, G. Velev, M. Jones, Mark Kruse, Alison Lister, Si Xie, G. Pauletta, B. A. Barnett, Giorgio Apollinari, M. Heck, Koji Yamamoto, A. Manousakis-Katsikakis, D. Beecher, Peter Wagner, Yuji Takeuchi, R. Field, P. F. Shepard, E. Vataga, D. E. Pellett, R. Hughes, Thomas LeCompte, B. Whitehouse, Teruki Kamon, P. Mazzanti, M. Paulini, N. Ershaidat, S. Lammel, A. Papaikonomou, Deepak Kar, V. Sorin, N. Kimura, Craig Blocker, D. Cauz, G. Giurgiu, Kaori Maeshima, S. Lami, M. M. Deninno, H. S. Lee, I. Suslov, Sebastian Grinstein, J. Galyardt, R. Rossin, Guenakh Mitselmakher, C. Vellidis, K. S. McFarland, K. Goulianos, P. de Barbaro, Avraham Yagil, H. W. Kim, Paolo Mastrandrea, C. Grosso-Pilcher, A. Canepa, W. Ashmanskas, Mauro Dell'Orso, Song-Ming Wang, M. Schmitt, M. D'Onofrio, F. Azfar, Sudhir Malik, E. E. Schmidt, J. Antos, J. Deng, D. Hirschbuehl, Franco Bedeschi, O. González, A. Pronko, G. Piacentino, K. Yi, M. Gold, M. Mussini, A. Rahaman, V. Cavaliere, P. Wilson, Fabrizio Margaroli, C. I. Ciobanu, A. J. Slaughter, M. Shochet, M. E. Mattson, M. Datta, R. Martínez-Ballarín, K. Makhoul, K. Tollefson, W. C. Wester, L. Pondrom, Manuela Campanelli, R. McNulty, Frank Würthwein, S. Uozumi, J. Kroll, W-M. Yao, M. Campbell, F. Scuri, J. Yamaoka, P. E. Karchin, A. Attal, Tiehui Liu, J. Mülmenstädt, Rodolfo Carosi, Y. Tu, P. Mehtala, L. E. Kirsch, M. Kurata, M. Lindgren, S. Carrillo, Ricardo Eusebi, K. Potamianos, U. K. Yang, D. MacQueen, M. Vogel, Y. S. Chung, Cunming Liu, J. C. Yun, M. Feindt, T. Dorigo, M. Renz, J. Heuser, D. Dagenhart, I. Shreyber, L. Lovas, Dario Bisello, M. Trovato, A. Bhatti, Christopher Neu, C. Wolfe, M. Corbo, H. Gerberich, Y. C. Chen, N. Giokaris, J. Yoh, Daniela Bortoletto, P. Murat, R. Tanaka, M. Chertok, A. Scribano, D. Hare, S. Wilbur, P. Giannetti, Giorgio Chiarelli, K. Gibson, Jahred Adelman, A. Robson, H. Miyake, J. N. Bellinger, P. Garosi, L. Nodulman, S. Z. Shalhout, K. Kondo, T. Schwarz, V. Papadimitriou, A. Menzione, T. Miao, M. Mathis, L. Ristori, Songkyo Lee, D. Chokheli, O. Stelzer-Chilton, M. Iori, A. Gessler, Kevin Burkett, F. Garberson, A. Sfyrla, G. Bauer, R. L. Lander, M. Cavalli-Sforza, Victoria Jane Martin, M. Vidal, Xin Wu, F. D. Snider, T. Okusawa, S. Dube, P. K. Teng, F. Canelli, S. Behari, J. Boudreau, G. Gomez, N. S. Lockyer, K. K. Joo, S. Wolbers, F. Ptohos, E. Palencia, Tara Shears, T. Tomura, S. S. Yu, M. Lancaster, Y. Zeng, J. Asaadi, G. Compostella, K. Hara, P. Barria, C. Paus, R. Snihur, D. Clark, S. R. Hahn, P. Renton, N. Krumnack, Wolfgang Wagner, C. Ferrazza, B. Knuteson, D. Hidas, G. Lungu, U. Husemann, Y. Nagai, B. Y. Han, E. Nurse, C. Cuenca Almenar, A. Ruiz, Andrea Castro, M. Milnik, B. Álvarez González, R. St. Denis, S. Leone, D. Lucchesi, K. Chung, I. Lazzizzera, A. Anastassov, K. Genser, D. Gerdes, M. Binkley, W. K. Sakumoto, S. H. Oh, E. Pueschel, G. Latino, M. P. Giordani, T. J. Phillips, W. Badgett, H. C. Fang, Itsuo Nakano, A. Semenov, G. Punzi, W. Ketchum, Alan Garfinkel, Andreas Warburton, P. McIntyre, T. Spreitzer, P. Totaro, T. Davies, G. L. Strycker, M. Giunta, M. Hare, A. Sukhanov, I. Furic, A. V. Kotwal, D. Jang, Andrew Mehta, Jacobo Konigsberg, M. Rescigno, C. Haber, Stefano Camarda, L. Scodellaro, M. Rossi, Daniel Whiteson, N. P. Kulkarni, J. C. Freeman, D. P. Benjamin, J. Pursley, M. K. Jha, I. Volobouev, I. V. Gorelov, M. J. Morello, B. Rutherford, S. Hewamanage, N. Miladinovic, Brian L. Winer, A. Buzatu, G. De Lorenzo, P. Dong, K. Hahn, Fumihiko Ukegawa, B. T. Huffman, A. Loginov, S. Y. Jun, R. Takashima, Sinead Farrington, T. Rodriguez, F. Sforza, A. Bodek, A. Golossanov, Shih-Fu Chang, Alessandro Cerri, S. H. Kim, Y. Zheng, J. E. Garcia, F. Crescioli, Javier Cuevas, G. Chlachidze, R. F. Harr, Y. Shon, M. A. Schmidt, Th. Müller, K. Sliwa, A. Apresyan, J. Y. Han, S. Klimenko, P. J. Bussey, S. Cabrera, M. Hartz, Michal Kreps, R. Erbacher, C. Deluca, S. Carron, S. Y. Tsai, and Duncan Carlsmith
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Tevatron, Perturbative QCD, Order (ring theory), 01 natural sciences, 7. Clean energy, law.invention, Luminosity, law, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Collider, Energy (signal processing)
Abstract: A measurement of the cross section for the inclusive production of isolated photons by the CDF experiment at the Fermilab Tevatron collider is presented. The measurement covers the pseudorapidity region $|{\ensuremath{\eta}}^{\ensuremath{\gamma}}|l1.0$ and the transverse energy range ${E}_{T}^{\ensuremath{\gamma}}g30\text{ }\text{ }\mathrm{GeV}$ and is based on $2.5\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity. The sample is almost a factor of 7 larger than those used for recent published results and extends the ${E}_{T}^{\ensuremath{\gamma}}$ coverage by 100 GeV. The result agrees with next-to-leading order perturbative QCD calculations within uncertainties over the range $50l{E}_{T}^{\ensuremath{\gamma}}l400\text{ }\text{ }\mathrm{GeV}$, though the energy spectrum in the data shows a steeper slope at lower ${E}_{T}^{\ensuremath{\gamma}}$.
Published: 2009
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37. Precision Measurement of theX(3872)Mass inJ/ψπ+π−Decays

Author: H. C. Fang, S. M. Wang, Emily Nurse, Tetsuo Arisawa, C. Neu, E. Palencia, C. Blocker, M. Hartz, A. Mitra, V. Glagolev, L. Lyons, K. Yi, Stephan Lammel, T. Rodrigo, Y. Tu, R. Mumford, K. Yamamoto, B. Casal, D. Amidei, D. Cauz, T. Masubuchi, T. Kamon, B. Carls, E. Vataga, M. Casarsa, S. Kwang, D. Jang, J. Lueck, J. Yoh, Andrew Ivanov, P. E. Karchin, T. Wright, C. Marino, C. Paus, E. J. Jeon, S. H. Chang, S. Tokar, T. Tomura, F. Vázquez, Fabrizio Scuri, W. Johnson, M. Deninno, D. MacQueen, I. Suslov, T. J. Phillips, J. Morlock, P. Mazzanti, J. Galyardt, R. Vilar, M. Jones, A. N. Sisakyan, R. Miller, G. Compostella, M. Heck, Maarten Schmidt, S. Pagan Griso, A. Sfyrla, S. Grinstein, V. Martin, T. Aaltonen, B. Knuteson, I. Volobouev, Shih-Chieh Hsu, R. Kephart, T. Liu, Scott Wilbur, J. Slaunwhite, G. Velev, A. Robson, M. N. Mondragon, J. Donini, I. Shreyber, E. Pianori, C. Mesropian, L. Oakes, Y. Seiya, Duncan Carlsmith, S. Amerio, I. Gorelov, M. Mathis, A. Menzione, Paola Giannetti, B. A. Barnett, Giorgio Apollinari, I. Furic, M. Chertok, D. Glenzinski, J. C. Yun, K. Pitts, W. Ashmanskas, N. Goldschmidt, T. Peiffer, S. Zucchelli, S. Y. Tsai, N. S. Lockyer, K. Genser, K. Maeshima, C. P. Marino, J. L. Gimmell, S. H. Oh, I. Nakano, M. Rescigno, B. Whitehouse, J. Efron, D. Whiteson, G. Introzzi, A. Sedov, U. Grundler, G. P. Yeh, M. Giordani, Andreas Warburton, L. Sexton-Kennedy, D. Clark, R. G. Wagner, S. R. Hahn, W. Ketchum, M. E. Convery, S. De Cecco, A. V. Kotwal, H. S. Budd, W. Wagner, S. Donati, M. Dell'Orso, G. Williams, J. Incandela, R. Martínez-Ballarín, A. Mukherjee, V. Papadimitriou, O. Stelzer-Chilton, T. Rodriguez, H. W. Kim, G. Bellettini, R. McNulty, Yuji Takeuchi, Paolo Mastrandrea, N. Pounder, M. Weinberger, K. L. Byrum, G. L. Strycker, M. Campanelli, G. Gomez-Ceballos, R. F. Harr, Aldo Penzo, G. Chiarelli, J. Antos, M. Feindt, E. Wicklund, S. Xie, Vyacheslav Krutelyov, S. Torre, M. Cordelli, M. Franklin, K. Kondo, M. Vogel, R. L. Lander, Andrea Bocci, V. E. Barnes, L. Sartori, P. Lukens, M. Mussini, T. Maruyama, A. Anastassov, Stephen R. Leone, P. Wilson, D. Kar, C. Calancha, S. Hewamanage, A. S. Thompson, J. Rademacker, S. Behari, M. Lindgren, T. Vine, Koji Terashi, V. Bartsch, K. Chung, Andrew Beretvas, V. Sorin, John Chou, P. Movilla Fernandez, T. Okusawa, S. Sarkar, D. Beecher, J. Russ, S. Dube, E. Lee, Guenakh Mitselmakher, Jeannine Wagner-Kuhr, Sinead Farrington, A. Scribano, C. Pagliarone, P. Catastini, U. Husemann, D. Stentz, O. González, J. Thom, Anyes Taffard, K. K. Joo, S. Rolli, B. Rutherford, S. Pashapour, E. Brubaker, M. E. Mattson, W. H. Chung, M. A. Ciocci, Prabir K. Roy, C. Dionisi, G. A. Thompson, Y. Nagai, B. Di Ruzza, W. Badgett, Michele Gallinaro, A. J. Slaughter, Tara Shears, A. Bodek, G. Pauletta, K. Osterberg, L. Kirsch, B. Kilminster, G. Volpi, M. Kreps, Jahred Adelman, P. Ttito-Guzmán, F. Canelli, B. Stelzer, Roger Moore, D. O. Litvintsev, J. E. Jung, A. Buzatu, P. Giromini, A. Heijboer, Y. Kato, Fumihiko Ukegawa, C. S. Hill, E. Pueschel, J. P. Fernandez, G. Choudalakis, J. Huston, T. Maki, J. Patrick, D. W. Gerdes, M. Norman, G. Latino, R. Erbacher, A. Loginov, H. Saarikko, A. Nagano, J. Pursley, V. Necula, Alan Garfinkel, P. Tipton, H. S. Lee, Th. Müller, I. Bizjak, F. Bedeschi, S. Tkaczyk, L. Nodulman, M. Tecchio, G. Manca, G. Bauer, A. Varganov, M. Stanitzki, S. Errede, P. Renton, D. Dagenhart, K. Yorita, P. Wagner, L. Zanello, J. Naganoma, J. Cuevas, J. Bellinger, J. C. Cully, P. N. Dong, N. Turini, J. Y. Han, R. Forrest, M. J. Frank, A. Barbaro-Galtieri, C. Henderson, G. Bolla, G. Giurgiu, Barry Blumenfeld, P. de Barbaro, A. Yagil, C. Hays, Elliot Lipeles, J. R. Smith, O. Saltó, M. D’Onofrio, D. Tonelli, T. Akimoto, S. Wolbers, M. J. Morello, S. Lami, F. Würthwein, M. Campbell, X. Wu, T. Spreitzer, S. Neubauer, C. Bromberg, J. Strologas, N. P. Kulkarni, Y. K. Kim, A. Mehta, Y. Zheng, M. Herndon, F. Azfar, L. Brigliadori, M. Lancaster, Z. Gunay-Unalan, R. Field, J. E. Garcia, P. K. Teng, M. Houlden, S. Hou, D. Torretta, S. Budd, D. E. Pellett, O. Poukhov, P. F. Shepard, K. Tollefson, A. Sukhanov, A. Boveia, R. Vidal, M. Vidal, S. Vallecorsa, H. H. Williams, J. Guimaraes Da Costa, C. I. Ciobanu, J. Kroll, M. Shimojima, P. Wittich, D. J. Kong, K. Lannon, S. Klimenko, K. Hara, T. Schwarz, V. Rusu, A. Martin, F. Chlebana, C. Vellidis, S. H. Kim, G. Chlachidze, T. Suzuki, L. Scodellaro, X. Zhang, G. Gomez, Y. Shon, C. Cuenca Almenar, H. Miyake, J. Yamaoka, S. Malik, D. Toback, M. Goncharov, G. Punzi, S. Z. Shalhout, A. Soha, L. Pinera, J. Nielsen, Suckjoon Jun, L. Demortier, R. Wallny, A. Savoy-Navarro, A. Hocker, E. Thomson, K. Goulianos, R. Eusebi, T. Kubo, P. Barria, J. R. Dittmann, B. T. Huffman, Douglas Benjamin, V. Giakoumopoulou, A. Schmidt, Y. S. Chung, R. Orava, T. Kuhr, M. Trovato, T. Davies, M. P. Schmidt, K. Hahn, Sam Harper, A. Castro, P. Totaro, R. Tanaka, I. Oksuzian, B. Brau, Malte Renz, C. M. Ginsburg, D. J. Cox, S. S. Yu, L. Lovas, E. James, M. Cavalli-Sforza, H. S. Kim, V. Boisvert, F. Sforza, M. Martínez, C. A. Cox, Eva Halkiadakis, J. Beringer, P. F. Derwent, B. Álvarez González, I. Lazzizzera, J. Conway, A. Lister, Y. D. Oh, Yi Chen, M. K. Jha, K. Sliwa, A. Bridgeman, J. Boudreau, W. C. Wester, M. Iori, J. Linacre, A. Papaikonomou, G. Piacentino, Y. C. Yang, J. Budagov, M. J. Kim, A. Manousakis-Katsikakis, D. Errede, J. Proudfoot, A. T. Laasanen, M. Giunta, M. Shochet, A. Bhatti, T. Wakisaka, G. Cortiana, R. Takashima, S. Seidel, Amitabh Lath, C. Deluca, A. Golossanov, A. Deisher, T. Lecompte, Sang Woon Lee, J. Weinelt, C. Haber, B. Jayatilaka, G. De Lorenzo, R. E. Hughes, D. Bortoletto, J. Mülmenstädt, I. Redondo, R. G. Feild, Dean Hidas, Daryl Hare, D. Lucchesi, A. Artikov, C. Mills, M. S. Neubauer, P. Garosi, R. M. Harris, P. Murat, A. Semenov, P. Bartos, M. Kruse, L. Ristori, J. S. Suh, Kevin Burkett, D. Waters, C. S. Lin, N. Van Remortel, M. Binkley, A. Gessler, P. Merkel, R. L. Wagner, K. Nakamura, G. B. Yu, A. Safonov, N. Miladinovic, S. Tourneur, N. Moggi, J. Lys, Paul Lujan, R. Roser, Ivan Vila, C. Plager, A. Aurisano, H. Gerberich, G. P. Di Giovanni, D. Chokheli, E. Rogers, D. Krop, A. A. Paramonov, R. St. Denis, Alberto Annovi, C. Luci, A. Gresele, P. Sinervo, S. Jindariani, J. E. Kim, J. D. Lewis, P. Squillacioti, E. E. Schmidt, Petar Maksimovic, Thorsten Chwalek, M. Schmitt, S. Giagu, S. Carrillo, R. Rossin, G. Busetto, S. Carron, S. B. Kim, J. Keung, K. Gibson, F. Prakoshyn, R. Culbertson, J. Konigsberg, R. Snihur, M. Hare, S. Burke, J. Nett, C. Grosso-Pilcher, F. Happacher, N. Kimura, N. Giokaris, T. Miao, U. K. Yang, K. S. McFarland, R. Madrak, A. Elagin, L. Pondrom, L. Cerrito, R. E. Blair, A. Pronko, Manfred Paulini, F. Rimondi, S. Malde, R. Lysak, B. R. Ko, C. S. Moon, G. Flanagan, D. Hirschbuehl, P. Bussey, J. Heuser, Dario Bisello, M. Milnik, Kenichi Hatakeyama, A. B. Wicklund, W-M. Yao, A. Napier, T. Dorigo, R. Carosi, W. T. Fedorko, A. Cerri, A. Attal, M. S. Gold, M. Datta, J. C. Freeman, D. H. Kim, A. Ruiz, B. Y. Han, Fabrizio Margaroli, F. Crescioli, K. Makhoul, J. Nachtman, Mahir S. Hussein, A. Clark, S. Richter, V. Khotilovich, Sunil Somalwar, P. Schlabach, A. Rahaman, J. Deng, L. Santi, A. T. Goshaw, C. Ferrazza, B. Parks, M. Rossi, A. Korytov, O. Norniella, T. R. Junk, Koji Sato, Anna Zanetti, W. K. Sakumoto, S. H. Chuang, Tomoko Yoshida, Cunming Liu, M. Loreti, F. D. Snider, F. Ptohos, S. Shiraishi, N. Krumnack, G. Lungu, F. Garberson, V. Ramakrishnan, J. Heinrich, N. Ranjan, K. Cho, A. Canepa, C. Wolfe, B. L. Winer, V. Cavaliere, A. Apresyan, M. Kurata, A. Di Canto, P. H. Beauchemin, Peter McIntyre, I. Yu, P. Mehtala, and S. Cabrera
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, Tevatron, General Physics and Astronomy, Quarkonium, 7. Clean energy, 01 natural sciences, Luminosity, Nuclear physics, Particle decay, Pion, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, X(3872)
Abstract: We present an analysis of the mass of the X(3872) reconstructed via its decay to J/psi pi(+)pi(-) using 2.4 fb(-1) of integrated luminosity from p (p) over bar collisions at root s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. The possible existence of two nearby mass states is investigated. Within the limits of our experimental resolution the data are consistent with a single state, and having no evidence for two states we set upper limits on the mass difference between two hypothetical states for different assumed ratios of contributions to the observed peak. For equal contributions, the 95% confidence level upper limit on the mass difference is 3.6 MeV/c(2). Under the single-state model the X(3872) mass is measured to be 3871.61 +/- 0.16(stat) +/- 0.19(syst) MeV/c(2), which is the most precise determination to date.
Published: 2009
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38. Measurement of thett¯cross section inpp¯collisions ats=1.96 TeVusing dilepton events with a lepton plus track selection

Author: Julien Donini, C. Blocker, M. Heck, M. Mathis, P. Barria, B. L. Winer, X. Zhang, A. Mukherjee, R. L. Wagner, A. Manousakis-Katsikakis, D. J. Cox, M. Stanitzki, O. Poukhov, A. Gessler, S. C. Hsu, T. Wakisaka, B. R. Ko, F. Ukegawa, Andrea Bocci, T. Tomura, A. Savoy-Navarro, Tommaso Dorigo, A. R. Clark, R. Rossin, J. Bellinger, P. Totaro, J. Rademacker, W. Ketchum, B. Parks, James Russ, D. Krop, P. Sinervo, A. Aurisano, L. Lyons, N. Pounder, E. Rogers, D. Whiteson, L. Ristori, G. Flanagan, F. Canelli, S. W. Lee, B. Carls, C. Luci, Peter Bussey, K. Yorita, M. Hartz, A. Sukhanov, H. C. Fang, C. Vellidis, J. Thom, Markus Frank, S. Torre, G. Busetto, M. Datta, C. Grosso-Pilcher, E. Pianori, E. Wicklund, A. Sedov, P. F. Shepard, T. Chwalek, G. Manca, O. González, Alan Garfinkel, A. Deisher, W. K. Sakumoto, M. Mussini, S. Leone, J. Strologas, M. Tecchio, N. Turini, F. Rimondi, J. Heinrich, Peter Wagner, M. M. Deninno, T. Spreitzer, B. Knuteson, J. C. Cully, S. Rolli, I. Lazzizzera, C. M. Ginsburg, L. Pondrom, C. Bromberg, S. Burke, K. L. Byrum, S. Tkaczyk, A. Soha, C. Wolfe, S. Vallecorsa, S. Pagan Griso, V. Rusu, T. Okusawa, K. Terashi, Artur Apresyan, Kiminori Kondo, M. Kurata, S. Richter, M. Binkley, A. Menzione, A. Safonov, H. Saarikko, D. Amidei, E. J. Jeon, A. Bridgeman, I. Suslov, T. Wright, Alberto Annovi, Marco Trovato, H. W. Kim, J. D. Lewis, K. Sliwa, Amitabh Lath, N. Goldschmidt, S. Seidel, C. Mills, S. Hewamanage, Sinead Farrington, M. Hare, Douglas Benjamin, N. Giokaris, D. Jang, Joe Incandela, E. Nurse, G. Volpi, V. Glagolev, J. Morlock, R. E. Hughes, F. Happacher, J. S. Suh, T. Kamon, P. Roy, D. Cauz, L. Santi, M. Jones, Maria Agnese Ciocci, T. Yoshida, L. Scodellaro, E. E. Schmidt, S. Kwang, N. S. Lockyer, P. Movilla Fernandez, Michal Kreps, P. E. Karchin, F. Vázquez, M. Shochet, M. Feindt, Federico Sforza, P. McIntyre, R. Kephart, I. Nakano, B. Y. Han, G. Giurgiu, A. Lister, W. Johnson, U. Husemann, A. Taffard, T. Suzuki, Alessandro Cerri, H. Gerberich, V. A. Giakoumopoulou, S. H. Chuang, Y. C. Yang, C. Deluca, R. Mumford, R. St. Denis, A. Mitra, J. Naganoma, M. Vidal, R. F. Harr, D. Toback, G. Williams, D. Kar, G. Mitselmakher, J. Deng, MarioPaolo Giordani, Y. K. Kim, S. Tokar, V. Boisvert, S. Cabrera, Andrey Korytov, A. Zanetti, S. H. Kim, O. Norniella, J. Weinelt, Ivan-Kresimir Furic, Guillelmo Gomez-Ceballos, D. Tonelli, A. Warburton, E. James, P. Tipton, G. Gomez, P. Lukens, J. Budagov, K. Nakamura, Arie Bodek, S. Budd, J. Slaunwhite, S. M. Wang, A. Semenov, A. Rahaman, G. Velev, Mahmoud I. Hussein, J. Huston, S. Z. Shalhout, T. Akimoto, M. Lindgren, Hyun-Chul Kim, T. Kuhr, M. Martínez, S. Shiraishi, J. Keung, F. Margaroli, A. Penzo, F. Scuri, G. P. Yeh, T. Masubuchi, S. Donati, D. Lucchesi, S. Carron, P. Merkel, M. Cordelli, A. Gresele, J. P. Fernandez, D. Clark, Stefano Giagu, A. Yagil, E. Halkiadakis, Sunil Somalwar, M. Kruse, D. Waters, A. Mehta, P. F. Derwent, Duncan Carlsmith, P. Ttito-Guzmán, J. L. Gimmell, P. Dong, A. Loginov, S. Zucchelli, R. E. Blair, P. H. Beauchemin, S. Xie, N. Ranjan, W. C. Wester, H. Miyake, G. Introzzi, G. A. Thompson, D. Hirschbuehl, A. Martin, Conor Henderson, R. Eusebi, G. Compostella, W. Ashmanskas, R. Orava, R. Erbacher, L. Nodulman, J. Beringer, B. Jayatilaka, P. de Barbaro, G. Choudalakis, M. Lancaster, J. Kroll, D. Errede, F. Crescioli, G. Latino, Th. Müller, C. A. Cox, S. Klimenko, S. S. Yu, B. Whitehouse, U. K. Yang, Chris Hays, C. Haber, M. Milnik, G. Bellettini, M. Rescigno, R. Forrest, J. Cuevas, S. Dube, E. Lee, A. Barbaro-Galtieri, M. E. Convery, B. Rutherford, K. Cho, D. E. Pellett, D. Chokheli, G. Chlachidze, V. Papadimitriou, G. Piacentino, M. Schmitt, Daniela Bortoletto, A. Golossanov, J. Guimaraes da Costa, M. Houlden, E. Pueschel, T. Vine, Y. Seiya, Cunming Liu, Kristian Allan Hahn, P. Squillacioti, Kazuhiko Hara, T. Maruyama, V. Bartsch, P. Giromini, K. K. Joo, R. Snihur, A. Ivanov, D. Beecher, J. Yamaoka, S. H. Chang, Y. Takeuchi, P. Mastrandrea, M. P. Schmidt, N. Kimura, G. P. Di Giovanni, R. G. Feild, P. Schlabach, P. Giannetti, F. Garberson, Hayden Lee, B. Stelzer, A. Castro, Manuela Campanelli, J. Nachtman, P. Mazzanti, A. Buzatu, K. Hatakeyama, Andrew Beretvas, Christopher Phillip Marino, O. Stelzer-Chilton, K. Yi, C. Ferrazza, T. Miao, R. Vidal, A. Nagano, D. O. Litvintsev, K. Tollefson, M. Gold, F. Ptohos, A. Attal, Y. S. Chung, L. Demortier, A. Boveia, L. Cerrito, L. Pinera, T. R. Junk, P. Lujan, T. Maki, Gerry Bauer, R. Vilar, D. Gerdes, M. Norman, Anna Sfyrla, A. Artikov, S. B. Kim, G. De Lorenzo, C. Dionisi, F. D. Snider, Monica D'Onofrio, N. P. Kulkarni, Dario Bisello, B. Di Ruzza, W. Badgett, A. Hocker, S. Pashapour, N. Moggi, S. Tourneur, F. Prakoshyn, P. Maksimovic, J. R. Smith, B. A. Barnett, I. Redondo, Giorgio Apollinari, R. Lysak, N. Van Remortel, T. Rodrigo, S. Y. Tsai, P. Mehtala, P. Wittich, J. Lueck, G. B. Yu, F. Bedeschi, A. T. Goshaw, M. Iori, L. Oakes, I. Oksuzian, T. J. Phillips, V. Sorin, Y. C. Chen, S. Sarkar, D. Glenzinski, C. S. Moon, F. Chlebana, R. Roser, L. Kirsch, L. Brigliadori, Y. D. Oh, D. Hidas, K. Osterberg, M. K. Jha, V. Martin, J. Mülmenstädt, K. Lannon, J. C. Yun, S. R. Hahn, S. Y. Jun, Jmv Garcia, R. L. Lander, E. Lipeles, Kevin Burkett, T. Kubo, S. Lammel, A. Heijboer, N. Krumnack, A. Sisakyan, J. E. Kim, T. Davies, C. Calancha, L. Sartori, M. Casarsa, S. Hou, M. Weinberger, S. Behari, J. Boudreau, R. G. Wagner, B. Casal, E. Thomson, A. Pronko, Jay Dittmann, I. Bizjak, C. Paus, M. Gallinaro, L. Sexton-Kennedy, I. Shreyber, U. Grundler, T. Lecompte, S. Errede, W. T. Fedorko, J. Conway, R. Carosi, A. Di Canto, W. Wagner, L. Lovas, Jon-Fredrik Nielsen, J. Antos, Richard D Field, A. Canepa, S. Harper, G. Pauletta, Igor Volobouev, S. H. Oh, P. K. Teng, P. Catastini, Xin Wu, V. Necula, C. Plager, R. Wallny, G. Cortiana, Z. Gunay-Unalan, A. Varganov, M. A. Schmidt, A. Scribano, T. Liu, M. Renz, T. Peiffer, V. Ramakrishnan, D. Hare, B. Brau, A. Anastassov, T. G. Shears, S. Wolbers, P. Savard, J. Galyardt, Matteo Cavalli-Sforza, D. J. Kong, A. Napier, C. P. Marino, J. Wagner-Kuhr, Matthew Herndon, S. Jindariani, M. E. Mattson, Y. Shon, Benjamin Kilminster, O. Saltó, J. Y. Han, Barry Blumenfeld, K. Goulianos, V. Krutelyov, F. Azfar, M. Giunta, M. Campbell, R. Takashima, J. P. Chou, C. Mesropian, D. Stentz, V. Khotilovich, Y. Zheng, K. S. McFarland, A. Elagin, S. Neubauer, B. T. Huffman, R. Martínez-Ballarín, R. Culbertson, R. Madrak, Jahred Adelman, W. H. Chung, M. Rossi, K. Maeshima, R. Moore, M. J. Morello, K. Genser, Y. Kato, A. V. Kotwal, K. Chung, R. Miller, M. Dell'Orso, G. L. Strycker, S. Lami, T. Rodriguez, F. Würthwein, J. C. Freeman, Gino Bolla, A. Bhatti, D. Torretta, A. Robson, V. Cavaliere, G. Lungu, S. Carrillo, S. Malik, P. Garosi, S. Malde, J. Proudfoot, N. Miladinovic, M. Loreti, M. Chertok, I. Gorelov, Manfred Paulini, L. Zanello, P. Renton, A. B. Wicklund, Virgil E Barnes, J. Yoh, T. Aaltonen, Alexander Paramonov, M. J. Kim, M. Franklin, E. Palencia, Maxim Goncharov, Y. Nagai, J. Nett, C. Cuenca Almenar, R. McNulty, H. S. Budd, E. Vataga, R. Tanaka, Y. Tu, D. Dagenhart, W. M. Yao, A. Ruiz, Jacobo Konigsberg, G. Chiarelli, P. Murat, B. Álvarez González, G. Punzi, Marcelo Vogel, K. Sato, J. Pursley, T. Schwarz, K. Makhoul, C. S. Hill, C. S. Lin, K. Yamamoto, J. E. Jung, J. Lys, R. M. Harris, S. Amerio, S. Wilbur, A. T. Laasanen, K. Gibson, I. Vila, E. Brubaker, P. Wilson, M. S. Neubauer, J. Linacre, D. MacQueen, A. S. Thompson, J. F. Patrick, H. H. Williams, C. I. Ciobanu, A. Schmidt, J. Efron, K. Pitts, Doyeong Kim, J. Heuser, I. Yu, A. Papaikonomou, M. Shimojima, S. Grinstein, S. De Cecco, C. Neu, Tetsuo Arisawa, and A. J. Slaughter
Subjects: Quark, Physics, Nuclear and High Energy Physics, Top quark, Particle physics, Muon, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Tevatron, 01 natural sciences, Particle decay, Pair production, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: This paper reports a measurement of the cross section for the pair production of top quarks in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ at the Fermilab Tevatron. The data were collected from the CDF run II detector in a set of runs with a total integrated luminosity of $1.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The cross section is measured in the dilepton channel, the subset of $t\overline{t}$ events in which both top quarks decay through $t\ensuremath{\rightarrow}Wb\ensuremath{\rightarrow}\ensuremath{\ell}\ensuremath{\nu}b$, where $\ensuremath{\ell}=e$, $\ensuremath{\mu}$, or $\ensuremath{\tau}$. The lepton pair is reconstructed as one identified electron or muon and one isolated track. The use of an isolated track to identify the second lepton increases the $t\overline{t}$ acceptance, particularly for the case in which one $W$ decays as $W\ensuremath{\rightarrow}\ensuremath{\tau}\ensuremath{\nu}$. The purity of the sample may be further improved at the cost of a reduction in the number of signal events, by requiring an identified $b$ jet. We present the results of measurements performed with and without the request of an identified $b$ jet. The former is the first published CDF result for which a $b$-jet requirement is added to the dilepton selection. In the CDF data there are 129 pretag $\mathrm{\text{lepton}}+\mathrm{\text{track}}$ candidate events, of which 69 are tagged. With the tagging information, the sample is divided into tagged and untagged subsamples, and a combined cross section is calculated by maximizing a likelihood. The result is ${\ensuremath{\sigma}}_{t\overline{t}}=9.6\ifmmode\pm\else\textpm\fi{}1.2(\mathrm{stat}{)}_{\ensuremath{-}0.5}^{+0.6}(\mathrm{sys})\ifmmode\pm\else\textpm\fi{}0.6(\mathrm{lum})\text{ }\text{ }\mathrm{pb}$, assuming a branching ratio of $\mathrm{BR}(W\ensuremath{\rightarrow}\ensuremath{\ell}\ensuremath{\nu})=10.8%$ and a top mass of ${m}_{t}=175\text{ }\text{ }\mathrm{GeV}/{c}^{2}$.
Published: 2009
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