Descriptor: "Chiral Perturbation-Theory" - Searchworks@Jio Institute Digital Library Search Results

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90 results on '"Chiral Perturbation-Theory"'

1. Threshold π0 photoproduction on transverse polarised protons at MAMI

Author: Wolfes, M. [Johannes Gutenberg Univ. Mainz (Germany). Inst. of Nuclear Physics]
Published: 2015
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2. Technibaryon production at pp colliders

Author: Dobado González, Antonio, Terrón, J., Dobado González, Antonio, and Terrón, J.
Abstract: ©1992 The American Physical Society. One of the authors (A.D.) would like to thank S. Dimopoulos and M. J. Herrero for continuous encouragement and T. N. Truong for useful discussions on the unitarity problem. A.D. thanks also the CERN TH-Division for hospitality at the early and Anal parts of this work. This work has been supported in part by the Ministerio de Educacion y Ciencia (Spain) (CICYT Project No. AEN90-0034)., If the symmetry-breaking sector of the standard model is strongly interacting, the low-energy dynamics of the longitudinal components of the weak bosons can be described by a nonlinear-sigma-model with two free parameters. For a large range of these parameters the model supports finite-energy solitons called weak Skyrmions or technibaryons. Technibaryons could be produced at the Superconducting Super Collider giving rise to exotic experimental signatures since they are stable, heavy, and in some cases, fractional-charged particles., Ministerio de Educacion y Ciencia (Spain), CICYT, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

3. Enhanced non-quark-antiquark and non-glueball N-c behavior of light scalar mesons

Author: Nebreda Manjón, Jenifer, Peláez Sagredo, José Ramón, Ríos, G., Nebreda Manjón, Jenifer, Peláez Sagredo, José Ramón, and Ríos, G.
Abstract: ©2011 American Physical Society. We thank J. Nieves and E. Ruiz-Arriola for useful discussions, checks and suggestions and B. Mussallam for the results of his Roy-Steiner dispersive analysis of the K(800) channel., We show that the latest and very precise dispersive data analyses require a large and very unnatural finetuning of the 1/N_c expansion at N_c = 3if the f_o(600) and K(800) light scalar mesons are to be considered predominantly q̅q states, which is not needed for light vector mesons. For this, we use scattering observables whose 1/N_c corrections are suppressed further than one power of 1/N_c for q̅q or glueball states, thus enhancing contributions of other nature. This is achieved without using unitarized ChPT, but if it is used we can also show that it is not just that the coefficients of the 1/N_c expansion are unnatural, but that the expansion itself does not even follow the expected 1/N_c scaling of a glueball or a q̅q meson., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

4. Bulk viscosity and the conformal anomaly in the pion gas

Author: Fernández Fraile, Daniel, Gómez Nicola, Ángel, Fernández Fraile, Daniel, and Gómez Nicola, Ángel
Abstract: © 2009 The American Physical Soci. We are grateful to D. Kharzeev, G. D. Moore, and C. Pica for very useful comments. This research was partially funded by research contracts No. FPA2004-02602, No. FPA2005-02327, No. FPA2007-29115-E, No. PR34- 1856-BSCH, No. UCM-CAM 10309, and No. FPI-BES- 2005-6726., We calculate the bulk viscosity of the massive pion gas within unitarized chiral perturbation theory. We obtain a low-temperature peak arising from explicit conformal breaking due to the pion mass and another peak near the critical temperature, dominated by the conformal anomaly through gluon condensate terms. The correlation between bulk viscosity and conformal breaking supports a recent QCD proposal. We discuss the role of resonances, heavier states, and large-N(c) counting., UCM-CAM, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

5. Eta/s and phase transitions

Author: Dobado González, Antonio, Llanes Estrada, Felipe José, Torres Rincón, Juan M., Dobado González, Antonio, Llanes Estrada, Felipe José, and Torres Rincón, Juan M.
Abstract: © 2009 The American Physical Society. We thank useful conversations and exchanges on eta/s with Jochen Wambach, Juan Maldacena, Dam Son, and Tom Cohen. This work has been supported by Grant Nos. FPA 2004-02602, 2005-02327, BSCH-PR34/0715875 (Spain), We present a calculation of eta/s for the meson gas (zero baryon number), with the viscosity computed within unitarized next-to-leading-order chiral perturbation theory, and confirm the observation that eta/s decreases towards the possible phase transition to a quark-gluon plasma/liquid. The value is somewhat higher than previously estimated in leading-order chi PT. We also examine the case of atomic Argon gas to check the discontinuity of eta/s across a first-order phase transition. Our results suggest employing this dimensionless number, sometimes called KSS number (in analogy with other ratios in fluid mechanics such as Reynolds number or Prandtl number) to pin down the phase transition and critical end point to a crossover in strongly interacting nuclear matter between the hadron gas and quark and gluon plasma/liquid., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

6. Status of light scalar mesons as non-ordinary mesons

Author: Peláez Sagredo, José Ramón and Peláez Sagredo, José Ramón
Abstract: © IOP Publishing Ltd. International Conference on Hadron Physics (TROIA) (4. 2014. Canakkale, Turquia). I thank the organizers of Troia14 for their kind hospitality and for creating such a nice scientific environment. Work supported by the Spanish Research contract FPA2011-27853-C02-02 and the EU-Research Infrastructure Integrating Activity “Study of Strongly Interacting Matter” (acronym HadronPhysics2, Grant Agreement n. 227431, 7th Framework Programme)., In this talk I briefly review the status of the f(0)(500) and f(0)(980) together with the other light scalar resonances, as well as the emerging picture of a non-ordinary light meson multiplet, paying particular attention to unitarized Chiral Perturbation Theory, large N-c, semi-local duality and Regge theory arguments., European Union - 7th Framework Programme, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

7. Learning about the strongly interacting symmetry-breaking sector at the LHC

Author: Dobado González, Antonio, Herrero, M. J., Pelaez, J.H., Morales, E.R., Urdiales, M.T., Dobado González, Antonio, Herrero, M. J., Pelaez, J.H., Morales, E.R., and Urdiales, M.T.
Abstract: We would like to thank the TH division at CERN for financial support and for their kind hospitality. We appreciate the continous encouragement from D. Denegri and thank him for the various discussions and useful comments on this and related subjects. We thank T. Rodrigo and the CMS Collaboration for discussions. This work has been partially supported by the Spanish Ministerio de Education y Ciencia under projects CICYT AEN93-0673, AEN90-0034 and AEN93-0776., In the present work we study the predictions for WZ and ZZ production at the LHC with the Electroweak Chiral Lagrangian (EChL) approach. Our analysis will be focused on the less favored case from the experimental point of view, in which the predictions for the gauge bosons scattering amplitudes are considered in the low energy range where, by construction of the low energy approach, they reveal no resonant behavior. The study includes the complete set of amplitudes for all the polarization states of the initial and/or final gauge bosons and makes no use of the Equivalence Theorem. We express the results in terms of the range of values of the chiral parameters that will be accessible at the LHC., Spanish Ministerio de Education y Ciencia, CICYT, CERN TH division, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

8. Inverse amplitude method and Adler zeros

Author: Gómez Nicola, Ángel, Peláez Sagredo, José Ramón, Rios, G., Gómez Nicola, Ángel, Peláez Sagredo, José Ramón, and Rios, G.
Abstract: ©2 008 The American Physical Society. Research was partially funded by Banco Santander/Complutense Contract No. PR27/05-13955- SCH and Spanish Contract No. FPA2007-29115-E, No. FPA2005-02327, No. FPA2004-02602, and No. UCM-CAM 910309. J. R. Peláez’s research is partly funded by Spanish Contract No. BFM2003-00856, and is part of the EU integrated infrastructure initiative HadronPhysics project, under Contract No. RII3-CT-2004-506078., The inverse amplitude method is a powerful unitarization technique to enlarge the energy applicability region of effective Lagrangians. It has been widely used to describe resonances in hadronic physics, combined with chiral perturbation theory, as well as in the strongly interacting symmetry breaking sector. In this work we show how it can be slightly modified to also account for the subthreshold region, incorporating correctly the Adler zeros required by chiral symmetry and eliminating spurious poles. These improvements produce negligible effects on the physical region., Banco Santander / Complutense, Spanish Contract, HadronPhysics project, UCM-CAM, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

9. Applicability constraints of the equivalence theorem

Author: Dobado González, Antonio, Peláez Sagredo, José Ramón, Urdiales, M.T., Dobado González, Antonio, Peláez Sagredo, José Ramón, and Urdiales, M.T.
Abstract: © 1997 The American Physical Society. J.R.P would like to thank the Theory Group at Berkeley for their kind hospitality, the Jaime del Amo fundation for financial support, as well as M.J. Herrero and H.J. He for helpful discussions on the subject. This work has been partially supported by the Ministerio de Educación y Ciencia (Spain) Grant No. CICYT AEN93-0776)., In this work we study the applicability of the equivalence theorem, either for unitary models or within an effective Lagrangian approach. There are two types of limitations: the existence of a validity energy window and the use of the lowest order in the electroweak constants. For the first kind, we consider some methods, based on dispersion theory or the large N limit, that allow us to extend the applicability. For the second, we obtain numerical estimates of the effect of neglecting higher orders in the perturbative expansion. [S0556-2821(97)04421-4]., Ministerio de Educación y Ciencia (Spain), CICYT, Jaime del Amo fundation, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

10. On the violation of the holographic viscosity versus entropy KSS bound, in non-relativistic systems

Author: Dobado González, Antonio, Llanes Estrada, Felipe José, Dobado González, Antonio, and Llanes Estrada, Felipe José
Abstract: © Springer-Verlag / Società Italiana di Fisica 2007. We thank T. Cohen and D.T. Son for enthusiastic correspondence about possible improvements to the original preprint. This work has been supported by grants FPA 2004-02602, 2005-02327, PR27/05-13955-BSCH (Spain)., A computation of the quotient of shear viscosity and entropy density, or the Kovtun, Son and Starinets (KSS) number eta/s, is performed in the non-relativistic and classical regime, first in chiral perturbation theory, and then in the SO(g + 1)ISO(g) non-linear sigma model in the large g limit. Both are field theories stemming from a renormalizable sigma model, but, in spite of that, we explicitly calculate how one avoids the KSS bound by increasing the number of degenerate pions sufficiently. However, we argue that particle production could still keep the validity of the KSS bound in the weak sense. We also show how a large number of molecular isomers (which we estimate in terms of simple molecular properties) could avoid the bound in the strong sense. This might be possible with carbon based molecules. We finally argue that a measurement of eta/s in heavy-ion collisions might be turned into an upper bound on the number of hadron resonances., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

11. Thermal rho and sigma mesons from chiral symmetry and unitarity

Author: Dobado González, Antonio, Gómez Nicola, Ángel, Llanes Estrada, Felipe José, Peláez Sagredo, José Ramón, Dobado González, Antonio, Gómez Nicola, Ángel, Llanes Estrada, Felipe José, and Peláez Sagredo, José Ramón
Abstract: ©2002 The American Physical Society. Work supported by the Spanish CICYT projects, Grant Nos. FPA2000-0956, PB98-0782, and BFM2000-1326. J.R.P. acknowledges support from the CICYT-INFN collaboration, Grant No. 003P 640.15, and E. Oset for useful comments., We study the temperature evolution of the rho and sigma mass and width, using a unitary chiral approach. The one-loop pipi scattering amplitude in chiral perturbation theory at Tnot equal0 is unitarized via the inverse amplitude method. Our results predict a clear increase with T of both the rho and sigma widths. The masses decrease slightly for high T, while the rhopipi coupling increases. The rho behavior seems to be favored by experimental results. In the sigma case, it signals chiral symmetry restoration., Spanish CICYT, CICYT-INFN, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

12. Fock space expansion of sigma meson in leading-N(c)

Author: Llanes Estrada, Felipe José, Peláez Sagredo, José Ramón, Ruiz de Elvira, Jacobo, Llanes Estrada, Felipe José, Peláez Sagredo, José Ramón, and Ruiz de Elvira, Jacobo
Abstract: Copyright © 2010 Elsevier B.V. All rights reserved. We thank S. Narison for the invitation to the inspiring 2010 edition of this conference, and interesting discussions with R. Jaffe, J. A. Oller. Work supported by grants FPA2008-00592, FIS2008-01323, FIS2006-03438 (MICINN), U.Complutense/Banco Santander grant PR34/07-15875 BSCH and UCMBSCH GR58/08 910309 and the EU-Research Infrastructure Integrating Activity “Study of Strongly Interacting Matter” (HadronPhysics2, Grant 227431) under the EU 7th Framework Programme. High Energy Physics International Conference on Quantum Chromodynamics (15. 2010. Montpellier, Francia), We examine the leading-N(c) behavior of the masses and transition matrix elements of some low-lying, few particle configurations in QCD. A truncation of the Fock space produces an effective, symmetric Hamiltonian that we diagonalize. The lowest eigenvalue is identified as the sigma meson if the Hamiltonian is chosen to represent the scalar sector. As an application, the coefficients of the (c) powers are then fit to two-loop Unitarized SU(2) Chiral Perturbation Theory results for the sigma mass and width as a function of the number of colors, and we show that those results can be accommodated using the QCD N(c) dependence previously derived for matrix elements, without the need for unnatural parameters or fine tunings. Finally, we show a very preliminary good quality fit, estimating the proportion of tetraquark/molecule-like (dominant), q (q) over bar like (subdominant) and exotic-like (marginal) configurations in the sigma., MICINN, U.Complutense/Banco Santander, UCM-BSCH, EU-Research Infrastructure Integrating Activity, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

13. Chemical nonequilibrium for interacting bosons: applications to the pion gas

Author: Fernández Fraile, Daniel, Gómez Nicola, Ángel, Fernández Fraile, Daniel, and Gómez Nicola, Ángel
Abstract: © 2009 The American Physical Society. We acknowledge financial support from the Spanish research Projects No. FPA2007-29115-E, No. PR34- 1856-BSCH, No. CCG07-UCM/ESP-2628, No. FPA2008- 00592, No. FIS2008-01323, and from the FPI programme (No. BES-2005-6726)., We consider an interacting pion gas in a stage of the system evolution where thermal but not chemical equilibrium has been reached, i.e., for temperatures between thermal and chemical freeze-out T(ther) < T < T(chem) reached in relativistic heavy-ion collisions. Approximate particle number conservation is implemented by a nonvanishing pion number chemical potential mu(pi) within a diagrammatic thermal field-theory approach, valid in principle for any bosonic field theory in this regime. The resulting Feynman rules are derived here and applied within the context of chiral perturbation theory to discuss thermodynamical quantities of interest for the pion gas such as the free energy, the quark condensate, and thermal self-energy. In particular, we derive the mu(pi) not equal 0 generalization of Luscher and Gell-Mann-Oakes-Renner-type relations. We pay special attention to the comparison with the conventional kinetic theory approach in the dilute regime, which allows for a check of consistency of our approach. Several phenomenological applications are discussed, concerning chiral symmetry restoration, freeze-out conditions, and Bose-Einstein pion condensation., Spanish research Projects, FPI programme, BSCH, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

14. Inflatonless inflation

Author: Dobado González, Antonio, López Maroto, Antonio, Dobado González, Antonio, and López Maroto, Antonio
Abstract: © Physical Society. This work has been partially supported by the Ministerio de Educacion y Ciencia (Spain) (CICYT AEN93-0776)., Whichever turns out to be the real theory of gravitation, the corresponding low-energy effective Lagrangian will probably contain higher derivative terms. In this work we study the general conditions on those terms in order to produce enough inflation to solve some of the problems of the standard Friedmann-Robert;son-Walker cosmology in the absence of any inflaton field. We apply our results to some particular scenarios where higher derivative terms appear in the effective Lagrangian for gravity, such as those coming from graviton (two) loops or integrating out ordinary matter (such as the one present in the standard model)., Ministerio de Educacion y Ciencia (Spain), CICYT, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

15. Minimum of eta/s and the phase transition of the linear sigma model in the large-N limit

Author: Dobado González, Antonio, Llanes Estrada, Felipe José, Torres Rincón, Juan M., Dobado González, Antonio, Llanes Estrada, Felipe José, and Torres Rincón, Juan M.
Abstract: © 2009 The American Physical Society. The authors thank A. Gómez Nicola, D. Fernández Fraile, F. Sols, and D. Antonov for useful discussions as well as T. Schaefer and N. Demir for providing us their=s data. This work was supported by Grants No. FPA2007-29115-E, No. PR34-1856-BSCH, No. FPA2008-00592, No. FIS2008-01323, No. UCM-BSCH GR58/08 910309, UCM-Santander No. PR34/07-15875, and an FPU grant to J. M. T.-R., We reexamine the possibility of employing the viscosity over entropy density ratio as a diagnostic tool to identify a Phase transition in hadron physics to the strongly coupled quark-gluon plasma and other circumstances where direct measurement of the order parameter or the free energy may be difficult. It has been conjectured that the minimum of eta/s does indeed occur at the phase transition. We now make a careful assessment in a controlled theoretical framework, the linear sigma model at large N, and indeed find that the minimum of eta/s occurs near the second-order phase transition of the model due to the rapid variation of the order parameter (here the sigma vacuum expectation value) at a temperature slightly smaller than the critical one., UCM-Santander, UCM-BSCH, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

16. Viscosity of meson matter

Author: Dobado González, Antonio, Llanes Estrada, Felipe José, Dobado González, Antonio, and Llanes Estrada, Felipe José
Abstract: ©2004 The American Physical Society. The authors thank J. R. Peláez and A. Gómez Nicola for providing us with their SU(3) phase shifts and useful discussions, S. Santalla and F. J. Fernández for extensive checks and assistance, and D. Davesne for some interesting comments. This work was supported by grants FPA 2000-0956 and BFM 2002-01003 (Spain)., We report a calculation of the shear viscosity in a relativistic multicomponent meson gas as a function of temperature and chemical potentials. We approximately solve the Uehling-Uhlenbeck transport equation of kinetic theory, appropriate for a boson gas, with relativistic kinematics. Since at low temperatures the gas can be taken as mostly composed of pions, with a fraction of kaons and etas, we explore the region where binary elastic collisions with at least one pion are the dominant scattering processes. Our input meson scattering phase shifts are fits to the experimental data obtained from chiral perturbation theory and the inverse amplitude method. Our results take the correct nonrelativistic limit (viscosity proportional to the square root of the temperature), show a viscosity of the order of the cube of the pion mass up to temperatures somewhat below that mass, and then a large increase due to kaons and etas. Our approximation may break down at even higher temperatures, where the viscosity follows a temperature power law with an exponent near 3., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

17. Higgs effective potential in the littlest Higgs model at the one-loop level

Author: Dobado González, Antonio, Tabares Cheluci, Lourdes, Peñaranda , Siannah, Dobado González, Antonio, Tabares Cheluci, Lourdes, and Peñaranda , Siannah
Abstract: © 2007 The American Physical Society. This work is supported by DGICYT (Spain) under Project No. BPA2005-02327. The work of S. P. is supported by the I3P-Contract of CSIC at IFIC—Instituto de Física Corpuscular, Valencia. The work of L. TabaresCheluci is supported by a FPU grant from the Spanish M.E.C., In this work we compute the contributions to the Higgs effective potential coming from the fermion and gauge boson sectors at the one-loop level in the context of the SU(5)/SO(5) littlest Higgs (LH) model using a cutoff Lambda and including all finite parts. We consider both, the (SU(2) x U(1))(1) x (SU(2) x U(1))(2) and the (SU(2) x U(1))(1) x (SU(2) x U(1)) gauge group versions of the LH model. We also show that the Goldstone bosons present in the model do not contribute to the effective potential at the one-loop level. Finally, by neglecting the contribution of higher dimensional operators, we discuss the restrictions that the new one-loop contributions set on the parameter space of the LH model and the need to include higher loop corrections to the Higgs potential., DGICYT (Spain), Instituto de Física Corpuscular, Valencia, FPU grant from the Spanish M.E.C., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

18. Electrical conductivity of a pion gas

Author: Fernández Fraile, Daniel, Gómez Nicola, Ángel, Fernández Fraile, Daniel, and Gómez Nicola, Ángel
Abstract: © 2006 The American Physical Society. We are grateful to R. F. lvarez-Estrada, A. Dobado, F. J. LLanes-Estrada, and J. M. Martínez Resco for their useful comments. We also acknowledge financial support from the Spanish research projects No. FPA2004-02602, No. BFM2002-01003, No. R27/05-13955-BSCH, No. FPA2005-02327, and from the Spanish F.P.I. programme (BES-2005-6726)., The electrical conductivity of a pion gas at low temperatures is studied in the framework of linear response and chiral perturbation theory. The standard ChPT power counting has to be modified to include pion propagator lines with a nonzero thermal width in order to properly account for collision effects typical of kinetic theory. With this modification, we discuss the relevant chiral power counting to be used in the calculation of transport coefficients. The leading order contribution is found and we show that the dominant higher order ladder diagrams can be treated as perturbative corrections at low temperatures. We find that the DC conductivity sigma(T) is a decreasing function of T, behaving for very low T as sigma(T)similar to e(2)m(pi) root m pi/T, consistently with nonrelativistic kinetic theory. When unitarization effects are included, sigma(T) increases slowly as T approaches the chiral phase transition. We compare with related works and discuss some physical consequences, especially in the context of the low-energy hadronic photon spectrum in relativistic heavy ion collisions., Spanish research projects, Spanish F.P.I. programme, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

19. Analysis tools for next-generation hadron spectroscopy experiments

Author: Peláez Sagredo, José Ramón and Peláez Sagredo, José Ramón
Abstract: © Wydawnictwo Uniwersytetu Jagiellonskiego. Artículo firmado por 47 autores, The series of workshops on New Partial-Wave Analysis Tools for Next-Generation Hadron Spectroscopy Experiments was initiated with the ATHOS 2012 meeting, which took place in Camogli, Italy, June 20-22, 2012. It was followed by ATHOS 2013 in Kloster Seeon near Munich, Germany, May 21-24, 2013. The third, ATHOS3, meeting is planned for April 13-17, 2015 at The George Washington University Virginia Science and Technology Campus, USA. The workshops focus on the development of amplitude analysis tools for meson and baryon spectroscopy, and complement other programs in hadron spectroscopy organized in the recent past including the INT-JLab Workshop on Hadron Spectroscopy in Seattle in 2009, the International Workshop on Amplitude Analysis in Hadron Spectroscopy at the ECT*-Trento in 2011, the School on Amplitude Analysis in Modern Physics in Bad Honnef in 2011, the Jefferson Lab Advanced Study Institute Summer School in 2012, and the School on Concepts of Modern Amplitude Analysis Techniques in Flecken-Zechlin near Berlin in September 2013. The aim of this document is to summarize the discussions that took place at the ATHOS 2012 and ATHOS 2013 meetings. We do not attempt a comprehensive review of the field of amplitude analysis, but offer a collection of thoughts that we hope may lay the ground for such a document. The material presented in the article was edited by the following Editorial Board: Marco Battaglieri, Bill J. Briscoe, Su-Urk Chung, Michael Doring, Jozef Dudek, Geoffrey Fox, Christoph Hanhart, Martin Hoferichter, David G. Ireland, Bernhard Ketzer, Bastian Kubis, Vincent Mathieu, Ryan Mitchell, Jose R. Pelaez, Elena Santopinto, Adam Szczepaniak., Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

20. Is the Theta(+) a K pi N bound state?

Author: Llanes Estrada, Felipe José, Oset, E, Mateu, V, Llanes Estrada, Felipe José, Oset, E, and Mateu, V
Abstract: © 2004 The American Physical Society. One of us, E.O., acknowledges the hospitality of the Universidad Complutense de Madrid where most of the work was done and useful discussions with T. Nakano, J. Nieves, and J. A. Oller. V. M. acknowledges CSIC financial support within the program of summer stays in the IFIC at Valencia. This work was also supported in part by DGICYT Project Nos. BFM2000-1326, FPA 2000-0956, BFM 2002-01003 (Spain), and the EU network EURIDICE Contract No. HPRN-CT-2002-00311., Following a recent suggestion that the Theta(+) could be a KpiN bound state we perform an investigation under the light of the meson-meson and meson-baryon dynamics provided by the chiral Lagrangians and using methods currently employed to dynamically generate meson and baryon resonances by means of unitary extensions of chiral perturbation theory. We consider two-body and three-body forces and examine the possibility of a bound state below the three-particle pion kaon-nucleon and above the kaon-nucleon thresholds. Although we find indeed an attractive interaction in the case of isospin I=0 and spin-parity 1/2(+), the interaction is too weak to bind the system. If we arbitrarily add to the physically motivated potential the needed strength to bind the system and with such strong attraction evaluate the decay width into KN, this turns out to be small. A discussion on further work in this direction is done., CSIC, DGICYT, EU network EURIDICE, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

21. CERN LHC sensitivity to the resonance spectrum of a minimal strongly interacting electroweak symmetry breaking sector

Author: Dobado González, Antonio, Herrero, M. J., Peláez Sagredo, José Ramón, Morales, E.R., Dobado González, Antonio, Herrero, M. J., Peláez Sagredo, José Ramón, and Morales, E.R.
Abstract: © 2000 The American Physical Society. We acknowledge partial support from the Spanish Ministerio de Educación y Ciencia under CICYT projects AEN97-1693 and AEN97-1678. E.R.M. also acknowledges support from the Spanish AME Foundation., We present a unified analysis of the two main production processes of vector boson pairs at the CERN LHC, VV-fusion and q (q) over bar annihilation, in a minimal strongly interacting electroweak symmetry breaking sector. Using a unitarized electroweak chiral Lagrangian formalism and modeling the final VLVL strong rescattering effects by a form factor, we describe q (q) over bar annihilation processes in terms of the two chiral parameters that govern elastic VLVL scattering. Depending on the values of these two chiral parameters, the unitarized amplitudes may present resonant enhancements in different angular momentum-isospin channels. Scanning this two parameter space, wt: generate the general resonance spectrum of a minimal strongly interacting electroweak symmetry breaking sector and determine the regions that can be probed at the CERN LHC., Spanish Ministerio de Educación y Ciencia, under CICYT Project, Spanish AME Foundation, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

22. The status of the KSS bound and its possible violations (how perfect can a fluid be?)

Author: Dobado González, Antonio, Llanes Estrada, Felipe José, Torres Rincón, Juan M., Dobado González, Antonio, Llanes Estrada, Felipe José, and Torres Rincón, Juan M.
Abstract: © 2008 American Institute of Physics. Conference on Ten Years of AdS/CFT (2007. Buenos Aires, Argentina). This work has been partially supported by the DGICYT (Spain) under grants FPA 2004- 02602 and FPA 2005-02327 and by the Universidad Complutense/CAM, project number 910309 and BSCH-PR34/07-15875. A. D. thanks José Edelstein and the organization for their kind invitation to participate in this celebration of the tenth anniversary of the discovery of the AdS/CFT correspondence held at such a great place as Buenos Aires, and Alex Buchel and Juan Maldacena for useful comments., In this work we briefly review the Kovtun-Son-Starinet (KSS) computation of the ratio eta/s for quantum field theories with gravitational dual and the related conjecture that it is bound from below by 1/4 pi. We discuss the validity of the bound and the nature of its possible violations, its relevance for RHIC, its connection with phase transitions and other related issues., DGICYT (Spain), Universidad Complutense/CAM, BSCH-UCM, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

23. Two-meson cloud contribution to the baryon antidecuplet binding

Author: Llanes Estrada, Felipe José, Peláez Sagredo, José Ramón, Vicente Vacas, M.J., Oset, E, Hosaka, A, Hyodo, T, Llanes Estrada, Felipe José, Peláez Sagredo, José Ramón, Vicente Vacas, M.J., Oset, E, Hosaka, A, and Hyodo, T
Abstract: © 2005 The American Physical Society. This work is supported by the Japan-Europe (Spain) Research Cooperation Program of Japan Society for the Promotion of Science (JSPS) and Spanish Council for Scientific Research (CSIC), which enabled E.O. and M.J.V.V. to visit RCNP, Osaka. This work is partly supported by DGICYT Contract Numbers BFM2003-00856, FPA 2000-0956, and BFM 2002-01003 and the E.U. EURIDICE Network Contract No. HPRN-CT-2002 00311., We study the two-meson virtual cloud contribution to the self-energy of the SU(3) antidecuplet, to which the Thet (+) pentaquark is assumed to belong. This is motivated by the large branching ratio of the N(1710) decay into two pions and one nucleon. We derive effective Lagrangians that describe the N(1710) decay into N pi pi with two pions in s or p wave. We obtain increased binding for all members of the antidecuplet and a contribution to the mass splitting between states with different strangeness which is at least 20% of the empirical one. We also provide predictions for three-body decays of the pentaquark antidecuplet., Japan-Europe (Spain) Research Cooperation Program of Japan Society for the Promotion of Science (JSPS, Spanish Council for Scientific Research (CSIC), DGICYT, E.U. EURIDICE Network, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2023

24. Systematizing and addressing theory uncertainties of unitarization with the Inverse Amplitude Method

Author: Salas Bernárdez, Alexandre, Llanes Estrada, Felipe José, Oller, Jose Antonio, Escudero Pedrosa, Juan, Salas Bernárdez, Alexandre, Llanes Estrada, Felipe José, Oller, Jose Antonio, and Escudero Pedrosa, Juan
Abstract: © A. Salas-Bernárdez et al. This publication is supported by EU Horizon 2020 research and innovation programme, STRONG-2020 project, under grant agreement No 824093; grants MINECO:FPA2016-75654-C2-1-P, MICINN: PID2019-108655GB-I00, PID2019-106080GB-C21 (Spain); Universidad Complutense de Madrid under research group 910309 and the IPARCOS institute; and the VBSCan COST Action CA16108. JAO would like to acknowledge partial finantial support by the grants FEDER (EU) and MINECO (Spain) FPA2016-77313-P and MICINN AEI (Spain) PID2019-106080GB-C222/AEI/10.13039/501100011033, Effective Field Theories (EFTS) constructed as derivative expansions in powers of momentum, in the spirit of Chiral Perturbation Theory (ChPT), are a controllable approximation to strong dynamics as long as the energy of the interacting particles remains small, as they do not respect exact elastic unitarity. This limits their predictive power towards new physics at a higher scale if small separations from the Standard Model are found at the LHC or elsewhere. Unitarized chiral perturbation theory techniques have been devised to extend the reach of the EFT to regimes where partial waves are saturating unitarity, but their uncertainties have hitherto not been addressed thoroughly. Here we take one of the best known of them, the Inverse Amplitude Method (IAM), and carefully following its derivation, we quantify the uncertainty introduced at each step. We compare its hadron ChPT and its electroweak sector Higgs EFT applications. We find that the relative theoretical uncertainty of the IAM at the mass of the first resonance encountered in a partial-wave is of the same order in the counting as the starting uncertainty of the EFT at near-threshold energies, so that its unitarized extension should a priori be expected to be reasonably successful. This is so provided a check for zeroes of the partial wave amplitude is carried out and, if they appear near the resonance region, we show how to modify adequately the IAM to take them into account., Unión Europea. H2020, Ministerio de Economía y Competitividad (MINECO) /FEDER, Ministerio de Economía y Competitividad (MINECO), Ministerio de Cienncia e Innovación (MICINN)/AEI, Ministerio de Cienncia e Innovación (MICINN), Universidad Complutense de Madrid, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2021

25. S-matrix bootstrap for effective field theories: massless pions

Author: Andrea L. Guerrieri, Joao Penedones, Pedro Vieira, Universidade Estadual Paulista (UNESP), Tel Aviv University, École Polytechnique Fédérale de Lausanne (EPFL), and Perimeter Institute for Theoretical Physics
Subjects: High Energy Physics - Theory, Nuclear and High Energy Physics, Field (physics), High Energy Physics::Lattice, FOS: Physical sciences, QC770-798, 01 natural sciences, General Relativity and Quantum Cosmology, symbols.namesake, Pion, Nuclear and particle physics. Atomic energy. Radioactivity, 0103 physical sciences, Scattering Amplitudes, 010306 general physics, chiral perturbation-theory, Mathematical physics, S-matrix, Physics, EFTS, Spacetime, behavior, 010308 nuclear & particles physics, Effective Field Theories, Massless particle, High Energy Physics - Theory (hep-th), Proof of concept, Chiral Lagrangians, symbols, pi-pi-scattering, Lagrangian
Abstract: We use the numerical S-matrix bootstrap method to obtain bounds on the two leading Wilson coefficients of the chiral lagrangian controlling the low-energy dynamics of massless pions thus providing a proof of concept that the numerical S-matrix bootstrap can be used to derive non-perturbative bounds on EFTs in more than two spacetime dimensions., Comment: 12 pages + appendices
Published: 2021
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26. Possible lattice approach to B - greater than D pi (K) matrix elements

Published: 2012

27. Measurement of the proton spin structure at long distances

Author: P. Eugenio, J. Brock, N. Dashyan, I. Bedlinskiy, S. Choi, P. Nadel-Turonski, A. Hobart, M. Defurne, S. E. Kuhn, Latifa Elouadrhiri, P. Chatagnon, M. Ripani, C. D. Keith, D. Bulumulla, Aditya R. Khanal, S. Adhikari, B. McKinnon, T. Holmstrom, V. Mokeev, G. V. Fedotov, H. S. Jo, L. Guo, Alessandro Rizzo, Andrea Bianconi, L. Barion, M. Mirazita, K. Livingston, M. Hattawy, N. Markov, G. Rosner, Simon Širca, S. Fegan, Y. Ghandilyan, Jie Zhang, P. Bosted, Michael Paolone, C. Carlin, M. Guidal, M. L. Seely, E. Pasyuk, D. P. Watts, F. Bossu, Laura Clark, S. Niccolai, N. Guler, M. Holtrop, B. Yale, R. A. Schumacher, P. Rossi, W. Phelps, V. Mascagna, S. Joosten, Axel Schmidt, Alexandre Deur, Luciano Pappalardo, Nikolaos Sparveris, V. Crede, I. I. Strakovsky, W. Kim, Fatiha Benmokhtar, M. Ehrhart, D. I. Glazier, V. P. Kubarovsky, T. A. Forest, O. Pogorelko, Z. W. Zhao, J. Rowley, S. Stepanyan, A. I. Ostrovidov, K. Park, Krishna Neupane, R. De Vita, A. El Alaoui, Y. Ilieva, Nicholas Zachariou, D. G. Ireland, C. W. Kim, H. Avakian, C. Mullen, W. K. Brooks, A. Kripko, Andrea Celentano, Volker D. Burkert, A. S. Biselli, J. C. Carvajal, V. Sulkosky, H. Atac, Karl Slifer, M. Leali, F. Sabatié, L. Venturelli, Y. G. Sharabian, X. Zheng, M. Bondì, H. Voskanyan, P. Lenisa, W. J. Briscoe, I. J. D. MacGregor, M. Contalbrigo, S. K. Phillips, T. Mineeva, T. B. Hayward, Friedrich Klein, Brian Raue, J. Poudel, N. Tyler, C. Djalali, G. Ciullo, M. Osipenko, Y. Prok, D. S. Carman, X. Wei, K. A. Griffioen, E. Voutier, Dustin Keller, S. Strauch, L. Lanza, R. W. Gothe, Michael Wood, T. Chetry, K. Hafidi, R. Dupre, M. Battaglieri, Gerard Gilfoyle, E. L. Isupov, V. A. Drozdov, S. Boiarinov, H. Kang, U. Shrestha, F.-X. Girod, K. P. Adhikari, H. Hakobyan, J. Ritman, S. Diehl, C. Salgado, R. G. Fersch, M. Ungaro, E. Long, J. P. Chen, D. Heddle, P. L. Cole, D. G. Meekins, A. D'Angelo, K. Hicks, L. El Fassi, K. Joo, M. Khandaker, M. J. Amaryan, A. Filippi, K. L. Giovanetti, Larry Weinstein, L. Marsicano, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and CLAS
Subjects: polarizabilities, Photon, Proton, High Energy Physics::Lattice, Nuclear Theory, General Physics and Astronomy, polarized target, polarized beam, 01 natural sciences, 7. Clean energy, 010305 fluids & plasmas, High Energy Physics - Experiment, Theoretical Nuclear Physics, Experimental Nuclear Physics, High Energy Physics - Experiment (hep-ex), effective field theory, Economica, Proton spin crisis, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Experimental particle Physics, order, Nuclear Experiment (nucl-ex), Nuclear Experiment, Spin-½, Quantum chromodynamics, Physics, Settore FIS/04, nucleon, virtual compton-scattering, chiral perturbation-theory, sum-rule, moments, evolution, sum rule, kinematics, Quantum electrodynamics, nuclear matter, Nucleon, nucleon: structure, Strong interaction, FOS: Physical sciences, Socio-culturale, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], p: spin, PE2_2, momentum transfer: low, PE2_1, CLAS, 0103 physical sciences, quantum chromodynamics, ddc:530, 010306 general physics, PE2_3, quark gluon, Coupling constant, nuclear force, scattering, Ambientale, Physics::Accelerator Physics, nucleon: spin, High Energy Physics::Experiment, experimental results
Abstract: Measuring the spin structure of protons and neutrons tests our understanding of how they arise from quarks and gluons, the fundamental building blocks of nuclear matter. At long distances the coupling constant of the strong interaction becomes large, requiring non-perturbative methods to calculate quantum chromodynamics processes, such as lattice gauge theory or effective field theories. Here we report proton spin structure measurements from scattering a polarized electron beam off polarized protons. The spin-dependent cross-sections were measured at large distances, corresponding to the region of low momentum transfer squared between 0.012 and 1.0 GeV$^2$. This kinematic range provides unique tests of chiral effective field theory predictions. Our results show that a complete description of the nucleon spin remains elusive, and call for further theoretical works, e.g. in lattice quantum chromodynamics. Finally, our data extrapolated to the photon point agree with the Gerasimov-Drell-Hearn sum rule, a fundamental prediction of quantum field theory that relates the anomalous magnetic moment of the proton to its integrated spin-dependent cross-sections., Published version. 10 pages, 5 figures. 20 pages of supplementary material (data tables and a figure)
Published: 2021
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28. Gravitational form factors of N(1535) in QCD

Author: Kazem Azizi and U. Ozdem
Subjects: Quark, Nuclear and High Energy Physics, Field (physics), FOS: Physical sciences, Light-cone QCD sum rules, High Energy Physics - Experiment, Nucleon, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Lattice, Chiral Perturbation-Theory, Energy-Momentum Tensor, Sum-Rules, Light cone, Gravitational form factors, Mathematical physics, Quantum chromodynamics, Physics, Generalized Parton Distributions, QCD sum rules, N(1535), High Energy Physics - Lattice (hep-lat), Quantum number, High Energy Physics - Phenomenology, D-Term, Multipole expansion
Abstract: We calculate the gravitational form factors of the excited $N(1535)$ state with the quantum numbers $I(J^P)=\frac{1}{2}(\frac{1}{2}^-)$ via light cone QCD sum rules (LCSR). To this end, we consider the quark part of the energy-momentum tensor (EMT) current and use the general form of the nucleon's interpolating field as well as the distribution amplitudes (DAs) of $N(1535)$. As both the nucleon and $N(1535)$ couple to the same current, the $N(1535) \rightarrow N$ gravitational transition form factors are entered to the calculations as the main input parameters. First we revisit the transitional gravitational form factors of $N(1535) \rightarrow N$, then extract the values of the form factors of the $N(1535)$ excited state. We observe that the gravitational form factors of $N(1535)$ in terms of $Q^2$ are well described by the multipole fit function. As a byproduct, we also calculate the pressure and energy density at the center of $N(1535)$ and estimate its mechanical radius., 12 Pages, 2 Figures and 3 Tables
Published: 2021
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29. Search for the decay eta ' -> gamma gamma eta

Author: BESIII Collaboration and Kolcu, Onur Bugra
Subjects: CHIRAL PERTURBATION-THEORY
Abstract: Using a data sample of 1.31 x 10(9) J/psi events collected with the BESIII detector, a search for eta' -> gamma gamma eta via J/psi ->gamma eta' is performed for the first time. No significant eta' signal is observed in the gamma gamma eta invariant mass spectrum, and the branching fraction of eta' -> gamma gamma eta is determined to be less than 1.33 x 10(-4) at the 90% confidence level.
Published: 2019

30. REVIEW OF PARTICLE PHYSICS Particle Data Group

Author: Particle Data Group, Tanabashi, M., Eerola, P., Törnqvist, N. A., and Department of Physics
Subjects: DEEP-INELASTIC-SCATTERING, SUPERSYMMETRIC STANDARD MODEL, PROTON-PROTON COLLISIONS, High Energy Physics::Phenomenology, DOUBLE-BETA-DECAY, HIGGS-BOSON PRODUCTION, ANOMALOUS MAGNETIC-MOMENT, ELECTROWEAK SYMMETRY-BREAKING, TO-LEADING-ORDER, CHIRAL PERTURBATION-THEORY, 114 Physical sciences, GRAND UNIFIED THEORIES
Abstract: The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavily revised, including a new review on Neutrinos in Cosmology. Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tables and all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of the Listings are now included in volume 1. The complete Review (both volumes) is published online on the website of the Particle Data Group (http://pdg.1b1.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is also available.
Published: 2018

31. Review of Particle Physics

Author: J Lesgourgues, Siegfried Bethke, C. Hanhart, P Eerola, Christian W. Bauer, F Takahashi, Oleg Zenin, A. de Gouvea, C. Grojean, O Buchmuller, Masaharu Tanabashi, P. de Jong, J. Erler, R Sekhar Chivukula, M Taševský, S.I. Eidelman, C. W. Walter, D J Miller, A. Piepke, Torbjörn Sjöstrand, Y Sumino, Orin I. Dahl, Herbert K. Dreiner, A Soffer, Chi Lin, Bogdan A. Dobrescu, S. M. Spanier, R E Mitchell, Marcela Carena, Manuella Vincter, Otmar Biebel, M Karliner, V. S. Lugovsky, Ren-Yuan Zhu, J. J. Beatty, C. Patrignani, A Pomarol, U Thoma, Kurtis F Johnson, N Varelas, William J. Marciano, David Milstead, Sw. Banerjee, Michael Doser, P Urquijo, A. Gurtu, A Bettini, Aneesh V. Manohar, L. S. Littenberg, Michael Syphers, Burkert, M C Gonzalez-Garcia, Ron L. Workman, Jamie Holder, German Valencia, Subir Sarkar, M Kenzie, Charles G Wohl, W. Fetscher, J Hisano, W Vogelsang, Th. Gutsche, Zoltan Ligeti, Thibault Damour, K Rabbertz, Marumi Kado, Sharma, G. Cowan, Klaus Mönig, Fabio Maltoni, C. L. Woody, Anatoli Romaniouk, A. Stahl, Michal Kreps, J Ellis, W-M. Yao, B C Allanach, J Anderson, Ken Ichi Hikasa, Eberhard Klempt, Keith A. Olive, V I Belousov, David H. Weinberg, J.J. Hernández-Rey, Meenakshi Narain, Younghoon Kwon, Andreas Ringwald, M O Wascko, K Trabelsi, E. J. Weinberg, R Yoshida, Jonas Rademacker, D. M. Asner, R A Ryutin, Paolo Molaro, C Lourengo, Peter Skands, Vorobyev, Wolfgang Walkowiak, S. B. Lugovsky, B. K. Heltsley, K. S. Lugovsky, Uli Katz, Daniel Tovey, George F. Smoot, Stephen R. Sharpe, S Heinemeyer, Brian D. Fields, H Ramani, Y Gershtein, R S Thorne, Ofer Lahav, K M Black, T Mannel, Timothy Gershon, Yoshinari Hayato, P. Schaffner, E. Blucher, G. Venanzoni, T Skwarnicki, Giancarlo D'Ambrosio, A J Schwartz, D J Robinson, G Rybka, Joey Huston, M S Sozzi, L.J. Rosenberg, L P Lellouch, Sophia L. Stone, U G Meißner, L. R. Wiencke, L Verde, S. Rolli, G. Dissertori, Augusto Ceccucci, S. T. Petcov, Matthias Neubert, Koji Nakamura, J. Beringer, E Pianori, W Zheng, G Zanderighi, Paul William Richardson, Daniel de Florian, Maksym Titov, C Lippmann, K Terashi, Y. Sakai, A Höcker, Ezhela, L. Tiator, Manuel Drees, A Pich, S Profumo, Gavin P. Salam, R. M. Barnett, J Schwiening, E C Aschenauer, Howard Baer, O. Schneider, Tony Gherghetta, P A Zyla, Jack Laiho, T Hyodo, Jonathan L. Rosner, B. Krusche, H J Gerber, Kate Scholberg, Stefan Roesler, Shoji Hashimoto, D Wands, G Aielli, A Holtkamp, Andrei Gritsan, Arnulf Quadt, A Freitas, Alessandro Cerri, U Egede, H. R. Gallagher, G. Gerbier, V A Khoze, S. R. Klein, B. N. Ratcliff, Y Makida, S. P. Wakely, Christoph Grab, Alberto Masoni, M Mikhasenko, Tony Liss, R. N. Cahn, A A Godizov, Paolo Nason, P. Nevski, T. Sumiyoshi, M D'Onofrio, A Lusiani, B. Foster, Thomas DeGrand, N. P. Tkachenko, Martin White, Douglas Scott, M Yokoyama, G P Zeller, M Ryskin, Petr Vogel, Christian Spiering, M A Bychkov, L. Garren, R. Kowalewski, John Terning, Claude Amsler, John Matthews, Y. Nir, A Hebecker, Mario Antonelli, M Ramsey-Musolf, Andreas Vogt, S L Zhu, Andrew R. Liddle, L Baudis, Debadi Chakraborty, Kaustubh Agashe, J Tanaka, S. Sánchez Navas, Howard E. Haber, Frank Krauss, M. C. Goodman, V A Petrov, Martin Grunewald, Fabio Sauli, D A Dwyer, R. G. Van de Water, M. Silari, John A. Peacock, S Willocq, T Shutt, Frank Zimmermann, Filip Moortgat, M Moskovic, Georg G. Raffelt, D. E. Groom, T. Basaglia, The George Washington University (GW), Thomas Jefferson National Accelerator Facility (Jefferson Lab), Florida State University [Tallahassee] (FSU), Helmholtz-Institut für Strahlen- und Kernphysik (HISKP), Rheinische Friedrich-Wilhelms-Universität Bonn, Institut für Kernphysik (IKP), Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association, University of Maryland [Baltimore], Università degli Studi di Roma Tor Vergata [Roma], University of Cambridge [UK] (CAM), Austrian Academy of Sciences (OeAW), INFN Frascati, Istituto Nazionale di Fisica Nucleare (INFN), Brookhaven National Laboratory [Upton, NY] (BNL), UT-Battelle, LLC-Stony Brook University [SUNY] (SBU), State University of New York (SUNY)-State University of New York (SUNY)-U.S. Department of Energy [Washington] (DOE), University of Oklahoma (OU), University of Louisville, Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Universität Zürich [Zürich] = University of Zurich (UZH), Ohio State University [Columbus] (OSU), National Research Centre Kurchatov Institute, Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Ludwig-Maximilians-Universität München (LMU), University of Wisconsin Oshkosh (UWO), University of Chicago, Imperial College London, University of Virginia, Fermi National Accelerator Laboratory (Fermilab), CERN [Genève], University of Sussex, University of California (UC), Royal Holloway [University of London] (RHUL), State University of New York (SUNY Canton), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Institut des Hautes Études Scientifiques (IHES), IHES, Universidad Nacional de San Martin (UNSAM), Northwestern University [Evanston], University of Colorado [Boulder], University of Amsterdam [Amsterdam] (UvA), Yale University [New Haven], University of Liverpool, Universitätsklinikum Bonn (UKB), TKK Helsinki University of Technology (TKK), Monash university, Budker Institute of Nuclear Physics (BINP), Siberian Branch of the Russian Academy of Sciences (SB RAS), University of Illinois [Chicago] (UIC), University of Illinois System, King‘s College London, Departement Physik [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), University of Pittsburgh (PITT), Pennsylvania Commonwealth System of Higher Education (PCSHE), Tufts University [Medford], Rutgers University [Camden], Rutgers University System (Rutgers), University of Minnesota System, Stony Brook University [SUNY] (SBU), State University of New York (SUNY), Argonne National Laboratory [Lemont] (ANL), Departement Erdwissenschaften [ETH Zürich] (D-ERDW), Johns Hopkins University (JHU), Deutsches Elektronen-Synchrotron [Hamburg] (DESY), University College Dublin [Dublin] (UCD), Department of Condensed Matter Physics and Materials Science [TIFR] (CMPMS), Tata Institute for Fundamental Research (TIFR), Universitätsklinikum Tübingen - University Hospital of Tübingen, Eberhard Karls Universität Tübingen = Eberhard Karls University of Tuebingen, Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Forschungszentrum Jülich GmbH, KEK (High energy accelerator research organization), The University of Tokyo (UTokyo), Heidelberg University, Universidad Autónoma de Madrid (UAM), Universitat de València (UV), Tohoku University [Sendai], University of Delaware [Newark], Michigan State University System, Tokyo Metropolitan University [Tokyo] (TMU), Gran Sasso Science Institute, INFN, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Tel Aviv University (TAU), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), University of Warwick [Coventry], Department of Physics [Durham University], Durham University, University of Ljubljana, University of Basel (Unibas), Yonsei University, University College of London [London] (UCL), Syracuse University, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), CPT - E1 Physique des particules, Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Rheinisch-Westfälische Technische Hochschule Aachen University (RWTH), Universidade de Lisboa, GSI Helmholtzzentrum für Schwerionenforschung (GSI), City College of New York [CUNY] (CCNY), City University of New York [New York] (CUNY), Scuola Normale Superiore di Pisa (SNS), Université Catholique de Louvain = Catholic University of Louvain (UCL), Universität Siegen [Siegen], Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari (INFN, Sezione di Cagliari), Louisiana State University (LSU), University of Glasgow, Stockholms universitet, Indiana State University, INAF/OATS, Trieste, Italy, Department of Applied Physics, Ghent University, Brown University, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU), Weizmann Institute of Science [Rehovot, Israël], University of Bologna/Università di Bologna, University of Edinburgh, Institute of Molecular Genetics of National Research Centre «Kurchatov Institute» [Moscow, Russia], Russian Academy of Sciences [Moscow] (RAS), Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), University of Alabama [Tuscaloosa] (UA), Universitat Autònoma de Barcelona (UAB), Georg-August-University = Georg-August-Universität Göttingen, Karlsruhe Institute of Technology (KIT), University of Bristol [Bristol], Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) (MPI-P), Tsung-Dao Lee Institute, Shanghai Jiao Tong, SLAC National Accelerator Laboratory (SLAC), Stanford University, U.S. Department of Energy [Washington] (DOE), Leopold Franzens Universität Innsbruck - University of Innsbruck, The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia], University of Mary Washington, Petersburg Nuclear Physics Institute, University of Oxford, Ecole Polytechnique Fédérale de Lausanne (EPFL), Technische Universität München = Technical University of Munich (TUM), University of Cincinnati (UC), University of British Columbia (UBC), University of Washington [Seattle], Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Lund University [Lund], AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), University of Pisa - Università di Pisa, University of Tennessee System, Northern Illinois University, Nagoya University, Tokyo University of Science [Tokyo], Czech Academy of Sciences [Prague] (CAS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, University of Sheffield [Sheffield], University of Melbourne, Monash University [Melbourne], University of Barcelona, California Institute of Technology (CALTECH), Department of Radiology [Radiologische Universitätsklinik Eberhard-Karls-Universität Tübingen], University of Portsmouth, Columbia University [New York], Colorado School of Mines, University of Massachusetts [Amherst] (UMass Amherst), University of Massachusetts System (UMASS), Max Planck Institute for the Physics of Complex Systems (MPI-PKS), Max-Planck-Gesellschaft, Moscow Institute of Physics and Technology [Moscow] (MIPT), Peking University [Beijing], Institute of High Energy Physics [Beijing] (IHEP), Chinese Academy of Sciences [Changchun Branch] (CAS), Particle Data Group, Institut des Hautes Etudes Scientifiques (IHES), Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), CEA/DSM, Département de Physique des Particules (ex SPP) (DPhP), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), ITA, Department of Energy (US), Japan Society for the Promotion of Science, European Commission, Ministry of Education, Culture, Sports, Science and Technology (Japan), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Science and Technology Facilities Council (STFC), Tanabashi, M, Grp, P, Hagiwara, K, Hikasa, K, Nakamura, K, Sumino, Y, Takahashi, F, Tanaka, J, Agashe, K, Aielli, G, Amsler, C, Antonelli, M, Asner, D, Baer, H, Banerjee, S, Barnett, R, Basaglia, T, Bauer, C, Beatty, J, Belousov, V, Beringer, J, Bethke, S, Bettini, A, Bichsel, H, Biebel, O, Black, K, Blucher, E, Buchmuller, O, Burkert, V, Bychkov, M, Cahn, R, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chen, M, Chivukula, R, Cowan, G, Dahl, O, D'Ambrosio, G, Damour, T, de Florian, D, de Gouvea, A, Degrand, T, de Jong, P, Dissertori, G, Dobrescu, B, D'Onofrio, M, Doser, M, Drees, M, Dreiner, H, Dwyer, D, Eerola, P, Eidelman, S, Ellis, J, Erler, J, Ezhela, V, Fetscher, W, Fields, B, Firestone, R, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, H, Gerbier, G, Gershon, T, Gershtein, Y, Gherghetta, T, Godizov, A, Goodman, M, Grab, C, Gritsan, A, Grojean, C, Groom, D, Grunewald, M, Gurtu, A, Gutsche, T, Haber, H, Hanhart, C, Hashimoto, S, Hayato, Y, Hayes, K, Hebecker, A, Heinemeyer, S, Heltsley, B, Hernandez-Rey, J, Hisano, J, Hocker, A, Holder, J, Holtkamp, A, Hyodo, T, Irwin, K, Johnson, K, Kado, M, Karliner, M, Katz, U, Klein, S, Klempt, E, Kowalewski, R, Krauss, F, Kreps, M, Krusche, B, Kuyanov, Y, Kwon, Y, Lahav, O, Laiho, J, Lesgourgues, J, Liddle, A, Ligeti, Z, Lin, C, Lippmann, C, Liss, T, Littenberg, L, Lugovsky, K, Lugovsky, S, Lusiani, A, Makida, Y, Maltoni, F, Mannel, T, Manohar, A, Marciano, W, Martin, A, Masoni, A, Matthews, J, Meissner, U, Milstead, D, Mitche, R, Moenig, K, Molaro, P, Moortgat, F, Moskovic, M, Murayama, H, Narain, M, Nason, P, Navas, S, Neubert, M, Nevski, P, Nir, Y, Olive, K, Griso, S, Parsons, J, Patrignani, C, Peacock, J, Pennington, M, Petcov, S, Petrov, V, Pianori, E, Piepke, A, Pomarol, A, Quadt, A, Rademacker, J, Raffelt, G, Ratcliff, B, Richardson, P, Ringwald, A, Roesler, S, Rolli, S, Romaniouk, A, Rosenberg, L, Rosner, J, Rybka, G, Ryutin, R, Sachrajda, C, Sakai, Y, Salam, G, Sarkar, S, Sauli, F, Schneider, O, Scholberg, K, Schwartz, A, Scott, D, Sharma, V, Sharpe, S, Shutt, T, Silari, M, Sjostrand, T, Skands, P, Skwarnicki, T, Smith, J, Smoot, G, Spanier, S, Spieler, H, Spiering, C, Stah, A, Stone, S, Sumiyoshi, T, Syphers, M, Terashi, K, Terning, J, Thoma, U, Thorne, R, Tiator, L, Titov, M, Tkachenko, N, Tornqvist, N, Tovey, D, Valencia, G, Van de Water, R, Varelas, N, Venanzoni, G, Verde, L, Vincter, M, Voge, P, Vogt, A, Wakely, S, Walkowiak, W, Walter, C, Wands, D, Ward, D, Wascko, M, Weiglein, G, Weinberg, D, Weinberg, E, White, M, Wiencke, L, Willocq, S, Woh, C, Womersley, J, Woody, C, Workman, R, Yao, W, Zeller, G, Zenin, O, Zhu, R, Zhu, S, Zimmermann, F, Zyla, P, Anderson, J, Fuller, L, Lugovsky, V, Schaffner, P, Tanabashi, M., Grp, Particle Data, Hagiwara, K., Hikasa, K., Nakamura, K., Sumino, Y., Takahashi, F., Tanaka, J., Agashe, K., Aielli, G., Amsler, C., Antonelli, M., Asner, D. M., Baer, H., Banerjee, Sw., Barnett, R. M., Basaglia, T., Bauer, C. W., Beatty, J. J., Belousov, V. I., Beringer, J., Bethke, S., Bettini, A., Bichsel, H., Biebel, O., Black, K. M., Blucher, E., Buchmuller, O., Burkert, V., Bychkov, M. A., Cahn, R. N., Carena, M., Ceccucci, A., Cerri, A., Chakraborty, D., Chen, M. -C., Chivukula, R. S., Cowan, G., Dahl, O., D'Ambrosio, G., Damour, T., de Florian, D., de Gouvea, A., Degrand, T., de Jong, P., Dissertori, G., Dobrescu, B. A., D'Onofrio, M., Doser, M., Drees, M., Dreiner, H. K., Dwyer, D. A., Eerola, P., Eidelman, S., Ellis, J., Erler, J., Ezhela, V. V., Fetscher, W., Fields, B. D., Firestone, R., Foster, B., Freitas, A., Gallagher, H., Garren, L., Gerber, H. -J., Gerbier, G., Gershon, T., Gershtein, Y., Gherghetta, T., Godizov, A. A., Goodman, M., Grab, C., Gritsan, A. V., Grojean, C., Groom, D. E., Grunewald, M., Gurtu, A., Gutsche, T., Haber, H. E., Hanhart, C., Hashimoto, S., Hayato, Y., Hayes, K. G., Hebecker, A., Heinemeyer, S., Heltsley, B., Hernandez-Rey, J. J., Hisano, J., Hocker, A., Holder, J., Holtkamp, A., Hyodo, T., Irwin, K. D., Johnson, K. F., Kado, M., Karliner, M., Katz, U. F., Klein, S. R., Klempt, E., Kowalewski, R. V., Krauss, F., Kreps, M., Krusche, B., Kuyanov, Yu. V., Kwon, Y., Lahav, O., Laiho, J., Lesgourgues, J., Liddle, A., Ligeti, Z., Lin, C. -J., Lippmann, C., Liss, T. M., Littenberg, L., Lugovsky, K. S., Lugovsky, S. B., Lusiani, A., Makida, Y., Maltoni, F., Mannel, T., Manohar, A. V., Marciano, W. J., Martin, A. D., Masoni, A., Matthews, J., Meissner, U. -G., Milstead, D., Mitche, R. E., Moenig, K., Molaro, P., Moortgat, F., Moskovic, M., Murayama, H., Narain, M., Nason, P., Navas, S., Neubert, M., Nevski, P., Nir, Y., Olive, K. A., Griso, S. Pagan, Parsons, J., Patrignani, C., Peacock, J. A., Pennington, M., Petcov, S. T., Petrov, V. A., Pianori, E., Piepke, A., Pomarol, A., Quadt, A., Rademacker, J., Raffelt, G., Ratcliff, B. N., Richardson, P., Ringwald, A., Roesler, S., Rolli, S., Romaniouk, A., Rosenberg, L. J., Rosner, J. L., Rybka, G., Ryutin, R. A., Sachrajda, C. T., Sakai, Y., Salam, G. P., Sarkar, S., Sauli, F., Schneider, O., Scholberg, K., Schwartz, A. J., Scott, D., Sharma, V., Sharpe, S. R., Shutt, T., Silari, M., Sjostrand, T., Skands, P., Skwarnicki, T., Smith, J. G., Smoot, G. F., Spanier, S., Spieler, H., Spiering, C., Stah, A., Stone, S. L., Sumiyoshi, T., Syphers, M. J., Terashi, K., Terning, J., Thoma, U., Thorne, R. S., Tiator, L., Titov, M., Tkachenko, N. P., Tornqvist, N. A., Tovey, D. R., Valencia, G., Van de Water, R., Varelas, N., Venanzoni, G., Verde, L., Vincter, M. G., Voge, P., Vogt, A., Wakely, S. P., Walkowiak, W., Walter, C. W., Wands, D., Ward, D. R., Wascko, M. O., Weiglein, G., Weinberg, D. H., Weinberg, E. J., White, M., Wiencke, L. R., Willocq, S., Woh, C. C., Womersley, J., Woody, C. L., Workman, R. L., Yao, W. -M., Zeller, G. P., Zenin, O. V., Zhu, R. -Y., Zhu, S. -L., Zimmermann, F., Zyla, P. A., Anderson, J., Fuller, L., Lugovsky, V. S., Schaffner, P., Robinson, D. J., Wohl, C. G., Allanach, B. C., Aschenauer, E. C., Baudis, L., Sekhar Chivukula, R., Egede, U., Gonzalez-Garcia, M. C., Huston, J., Kenzie, M., Khoze, V. A., Lellouch, L. P., Liddle, A. R., Lourenco, C., Mikhasenko, M., Miller, D. J., Mitchell, R. E., Monig, K., Pich, A., Profumo, S., Rabbertz, K., Ramani, H., Ramsey-Musolf, M., Ryskin, M., Schwiening, J., Soffer, A., Sozzi, M. S., Stahl, A., Tasevsky, M., Trabelsi, K., Urquijo, P., van de Water, R., Vogel, P., Vogelsang, W., Vorobyev, V., Yokoyama, M., Yoshida, R., Zanderighi, G., Zheng, W., and Department of Physics
Subjects: high energy, lepton, mixing [neutrino], High Energy Physics::Lattice, Cosmic microwave background, diffraction, Technicolor, Astrophysics, Omega, 01 natural sciences, Physics, Particles & Fields, higgs-boson production, Big Bang nucleosynthesis, cosmological model: parameter space, tau, dark energy, Monte Carlo, fields, pentaquark, instrumentation, Settore FIS/01, gauge boson, Anomalous magnetic dipole moment, deep-inelastic scattering, new physics, Physics, DOUBLE-BETA-DECAY, Electroweak interaction, density [dark matter], HEAVY FLAVOUR, Quarkonium, review, particle, physics, SUPERSYMMETRIC STANDARD MODEL, square-root-s, Physics, Nuclear, grand unified theory, boson: heavy, statistics, Physical Sciences, Higgs boson, axion: mass, flavor: violation, Neutrino, ELECTROWEAK SYMMETRY-BREAKING, numerical calculations: Monte Carlo, on-line, S013EPH, Quark, heavy [boson], [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Physics, Multidisciplinary, anomalous magnetic-moment, electroweak radiative-corrections, dark matter: density, Higgs particle, meson, neutrino masses, neutrino mixing, neutrino oscillations, 114 Physical sciences, CHIRAL PERTURBATION-THEORY, neutrino mixing, Standard Model, quark, 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics, Nucleosynthesis, quantum chromodynamics, CP: violation, Dark matter, ddc:530, particle physics, Strong Interactions, 010306 general physics, sparticle, S013DF, grand unified theories, PRODUCTION, Gauge boson, Science & Technology, neutrino masses, 010308 nuclear & particles physics, C50 Other topics in experimental particle physics, Particle Data Group, Astronomy and Astrophysics, Deep inelastic scattering, to-leading-order, Automatic Keywords, heavy boson, axion, tables (particle physics), Tetraquark, proton-proton collisions, Supersymmetry, hadron, neutrino: mixing, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], cosmology, Volume (compression), HIGGS-BOSON, UB-VERTICAL-BAR, cosmological model, dark energy density, experimental methods, ddc:539.72021, Physics beyond the Standard Model, standard model, group theory, General Physics and Astronomy, tables, particle physics, high energy physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Quantum chromodynamics, energy: high, E Rev 2016, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], Settore FIS/01 - Fisica Sperimentale, photon, Nuclear & Particles Physics, parameter space [cosmological model], dark energy: density, high [energy], M013WX, fermion-pair production, Nuclear and High Energy Physics, Particle physics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, dark matter, statistical analysis, Double beta decay, 0103 physical sciences, conservation law, cold dark-matter, TAU LEPTONS, Astrophysics::Galaxy Astrophysics, tables, DEEP-INELASTIC-SCATTERING, electroweak interaction, High Energy Physics::Phenomenology, 750 GeV diphoton excess, PRODUCTION CROSS-SECTION, baryon, density [dark energy], Physics and Astronomy, gravitation, CKM matrix, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, supersymmetry, Minimal Supersymmetric Standard Model
Abstract: The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on Machine Learning, and one on Spectroscopy of Light Meson Resonances. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 97 review articles. Volume 2 consists of the Particle Listings and contains also 23 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print, as a web version optimized for use on phones, and as an Android app., United States Department of Energy (DOE) DE-AC02-05CH11231, government of Japan (Ministry of Education, Culture, Sports, Science and Technology), Istituto Nazionale di Fisica Nucleare (INFN), Physical Society of Japan (JPS), European Laboratory for Particle Physics (CERN), United States Department of Energy (DOE)
Published: 2018
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32. Resonant production of Wh and Zh at the LHC

Author: Dobado González, Antonio, Llanes Estrada, Felipe José, Sanz Cillero, Juan José, Dobado González, Antonio, Llanes Estrada, Felipe José, and Sanz Cillero, Juan José
Abstract: Open Access, © The Authors. The authors thank Rafael L. Delgado for assistance and valuable comments at early stages of this investigation. We also want to thank C. García, M.J. Herrero and D. Espriu for useful comments and suggestions, and the members of UPARCOS for maintaining a stimulating intellectual atmosphere. Work supported by Spanish grants MINECO:FPA2014- 53375-C2-1-P, FPA2016-75654-C2-1-P and the COST Action CA16108., We examine the production of W h and Zh pairs at the LHC in the context of a Strongly Interacting Symmetry Breaking Sector of the Standard Model. Our description is based on a non-linear Higgs Effective Theory, including only the Standard Model particles. We focus on its scalar sector (Higgs boson h and electroweak Goldstones associated to W^(±)_(L) and ZL), which is expected to give the strongest beyond Standard Model rescattering effects. The range of the effective theory is extended with dispersion-relation based unitarization, and compared to the alternative extension with explicit axial-vector resonances. We estimate the W h and Zh production cross-section, where an intermediate axial-vector resonance is generated for certain values of the chiral couplings. We exemplify our analysis with a benchmark axial-vector with M_(A) = 3 TeV. Interestingly enough, these different approaches provide essentially the same prediction. Finally we discuss the sensitivity of ATLAS and CMS to such resonances., Ministerio de Economía y Competitividad (MINECO), COST Action, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2018

33. Observation of the doubly radiative decay eta ' -> gamma gamma pi(0)

Author: Haddadi, Z., Kalantar-Nayestanaki, N., Kavatsyuk, M., Löhner, H., Messchendorp, J., Tiemens, M., and Research unit Nuclear & Hadron Physics
Subjects: Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, ANOMALOUS WARD IDENTITIES, Nuclear Experiment, CHIRAL PERTURBATION-THEORY, AMPLITUDES
Abstract: Based on a sample of 1.31 billion J/psi events collected with the BESIII detector, we report the study of the doubly radiative decay eta' -> gamma gamma pi(0) for the first time, where the eta' meson is produced via the J/psi -> gamma eta' decay. The branching fraction of eta' -> gamma gamma pi(0) inclusive decay is measured to be B(eta' -> gamma gamma pi(0))(Incl) = (3.20 +/- 0.07(stat) +/- 0.23(sys)) x 10(-3), while the branching fractions of the dominant process eta' -> gamma omega and the non-resonant component are determined to be B(eta' -> gamma omega) x B(omega -> gamma pi(0)) = (23.7 +/- 1.4(stat) +/- 1.8(sys)) x 10(-4) and B(eta' -> gamma gamma pi(0))(NR) = (6.16 +/- 0.64(stat) +/- 0.67(sys)) x 10(-4), respectively. In addition, the M-gamma gamma(2)-dependent partial widths of the inclusive decay are also presented.
Published: 2017

34. Observation of the doubly radiative decay eta ' -> gamma gamma pi(0)

Subjects: ANOMALOUS WARD IDENTITIES, CHIRAL PERTURBATION-THEORY, AMPLITUDES
Abstract: Based on a sample of 1.31 billion J/psi events collected with the BESIII detector, we report the study of the doubly radiative decay eta' -> gamma gamma pi(0) for the first time, where the eta' meson is produced via the J/psi -> gamma eta' decay. The branching fraction of eta' -> gamma gamma pi(0) inclusive decay is measured to be B(eta' -> gamma gamma pi(0))(Incl) = (3.20 +/- 0.07(stat) +/- 0.23(sys)) x 10(-3), while the branching fractions of the dominant process eta' -> gamma omega and the non-resonant component are determined to be B(eta' -> gamma omega) x B(omega -> gamma pi(0)) = (23.7 +/- 1.4(stat) +/- 1.8(sys)) x 10(-4) and B(eta' -> gamma gamma pi(0))(NR) = (6.16 +/- 0.64(stat) +/- 0.67(sys)) x 10(-4), respectively. In addition, the M-gamma gamma(2)-dependent partial widths of the inclusive decay are also presented.
Published: 2017
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35. The ρ-meson light-cone distribution amplitudes from lattice QCD

Author: Sara Collins, Meinulf Göckeler, Fabian Hutzler, A. Sternbeck, Andreas Schäfer, Wolfgang Söldner, Vladimir M. Braun, John A. Gracey, Philipp Wein, Peter C. Bruns, Paula Pérez-Rubio, and Michael Gruber
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Lattice, ddc:530, Lattice QCD, Fermion, 530 Physik, 01 natural sciences, CHIRAL PERTURBATION-THEORY, VECTOR-MESONS, FIELD-THEORY, INFRARED REGULARIZATION, FEYNMAN-INTEGRALS, SPIN-1 FIELDS, EVOLUTION, MASS, EQUATIONS, OPERATORS, Lattice field theory simulation, Non-perturbative renormalization, Renormalization, High Energy Physics - Phenomenology, High Energy Physics - Lattice, Pion, Lattice (order), Light cone, 0103 physical sciences, lcsh:QC770-798, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics
Abstract: We present the results of a lattice study of the normalization constants and second moments of the light-cone distribution amplitudes of longitudinally and transversely polarized $\rho$ mesons. The calculation is performed using two flavors of dynamical clover fermions at lattice spacings between $0.060\,\text{fm}$ and $0.081\,\text{fm}$, different lattice volumes up to $m_\pi L = 6.7$ and pion masses down to $m_\pi=150\,\text{MeV}$. Bare lattice results are renormalized non-perturbatively using a variant of the RI'-MOM scheme and converted to the $\overline{\text{MS}}$ scheme. The necessary conversion coefficients, which are not available in the literature, are calculated. The chiral extrapolation for the relevant decay constants is worked out in detail. We obtain for the ratio of the tensor and vector coupling constants $f_\rho^T/f_\rho^{\vphantom{T}} = 0.629(8)$ and the values of the second Gegenbauer moments $a_2^\parallel = 0.132(27)$ and $a_2^\perp = 0.101(22)$ at the scale $\mu = 2\,\text{GeV}$ for the longitudinally and transversely polarized $\rho$ mesons, respectively. The errors include the statistical uncertainty and estimates of the systematics arising from renormalization. Discretization errors cannot be estimated reliably and are not included. In this calculation the possibility of $\rho\to\pi\pi$ decay at the smaller pion masses is not taken into account., Comment: Updated to published version
Published: 2017
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36. Tests of Lorentz and CPT symmetry with hadrons and nuclei

Author: J. P. Noordmans, Grzadkowski, B, Kalinowski, J, and Krawczyk, M
Subjects: Quantum chromodynamics, Physics, Antiparticle, Particle physics, History, CPT symmetry, 010308 nuclear & particles physics, Violation, Lorentz transformation, Hadron, High Energy Physics::Phenomenology, Nuclear Theory, Chiral perturbation-theory, 01 natural sciences, Computer Science Applications, Education, symbols.namesake, Quantum electrodynamics, Effective lagrangian, 0103 physical sciences, symbols, Hamiltonian (quantum mechanics), 010306 general physics, Nuclear Experiment, Model
Abstract: We apply chiral-perturbation-theory techniques to the QCD sector of the Lorentz and CPT violating standard-model extension. We derive the effective Lagrangian in terms of pions and nucleons for a selected set of dimension-five operators involving quarks and gluons. This derivation is based on chiral-symmetry properties of the operators, as well as on their behaviour under C,P, and T transformations. We consider the power counting rules and apply the heavy-baryon approach to account for the large nucleon mass. Having obtained the relevant Lorentz-violating contributions to the pion-nucleon Lagrangian, we proceed to derive the particle and anti-particle Hamiltonian, from which we obtain the Lorentz-violating contribution to comagnetometer experiments. This allows us to place stringent limits on some of the parameters. For some other parameters we find that the best bounds will come from nucleon nucleon interactions, and we derive the relevant nucleon-nucleon potential. These considerations imply possible new opportunities for spin-precession experiments involving for example the deuteron. Portuguese Foundation for Science and Technology (FCT) [SFRH/BPD/101403/2014]; program POPH/FSE
Published: 2017

37. Tests of Lorentz and CPT symmetry with hadrons and nuclei

Author: Robertus Timmermans, J. P. Noordmans, J. A. de Vries, and High-Energy Frontier
Subjects: Quark, Particle physics, Chiral perturbation theory, Nuclear Theory, CPT symmetry, Lorentz transformation, Physics beyond the Standard Model, High Energy Physics::Lattice, Degrees of freedom (physics and chemistry), FOS: Physical sciences, ANAPOLE FORM-FACTOR, 01 natural sciences, CHIRAL PERTURBATION-THEORY, Nuclear Theory (nucl-th), symbols.namesake, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, PARTICLES, 010306 general physics, Nuclear Experiment, FOLDY-WOUTHUYSEN TRANSFORMATION, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Observable, TIME-REVERSAL VIOLATION, DEUTERON, Gluon, MOMENT, High Energy Physics - Phenomenology, symbols, High Energy Physics::Experiment, LAGRANGIANS
Abstract: We explore the breaking of Lorentz and CPT invariance in strong interactions at low energy in the framework of chiral perturbation theory. Starting from the set of Lorentz-violating operators of mass-dimension five with quark and gluon fields, we construct the effective chiral Lagrangian with hadronic and electromagnetic interactions induced by these operators. We develop the power-counting scheme and discuss loop diagrams and the one-pion-exchange nucleon-nucleon potential. The effective chiral Lagrangian is the basis for calculations of low-energy observables with hadronic degrees of freedom. As examples, we consider clock-comparison experiments with nuclei and spin-precession experiments with nucleons in storage rings. We derive strict limits on the dimension-five tensors that quantify Lorentz and CPT violation., Comment: 38 pages, 1 figure, updated to match published version
Published: 2016

38. Experiments towards resolving the proton charge radius puzzle

Author: A. Knecht, José Paulo Santos, David Taqqu, Andreas Dax, Theodor W. Hänsch, Thomas Graf, Jorge Machado, Randolf Pohl, L.M.P. Fernandes, Marc Diepold, Françoise Mulhauser, F. D. Amaro, B. Franke, Malte Hildebrandt, Karsten Schuhmann, A. L. Gouvea, Pedro Amaro, Paul Indelicato, Yi-Wei Liu, Julian J. Krauth, C.M.B. Monteiro, S. Galtier, M. Abdou-Ahmed, L. Julien, D. S. Covita, Klaus Kirch, Aldo Antognini, J.F.C.A. Veloso, Csilla I. Szabo, Birgit Weichelt, J.M.F. dos Santos, Andreas Voss, Tzu-Ling Chen, François Nez, Franz Kottmann, François Biraben, Johannes Götzfried, Atoms, Molecules, Lasers, LaserLaB - Physics of Light, Elster, Charlotte, Phillips, Daniel R., Roberts, Craig, LIBPhys-UNL, and DF – Departamento de Física
Subjects: Hydrogen, Proton, POLARIZABILITY CONTRIBUTION, Atomic Physics (physics.atom-ph), QC1-999, chemistry.chemical_element, FOS: Physical sciences, MUONIC-HYDROGEN, Physics and Astronomy(all), FREQUENCY, 01 natural sciences, CHIRAL PERTURBATION-THEORY, HYDROGEN LAMB SHIFT, Physics - Atomic Physics, ATOMS, Charge radius, 0103 physical sciences, Physics::Atomic Physics, SDG 7 - Affordable and Clean Energy, 010306 general physics, Spectroscopy, Exotic atom, Physics, 010308 nuclear & particles physics, Scattering, METROLOGY, chemistry, ELASTIC-SCATTERING, Atomic physics, TRANSITION
Abstract: We review the status of the proton charge radius puzzle. Emphasis is given to the various experiments initiated to resolve the conflict between the muonic hydrogen results and the results from scattering and regular hydrogen spectroscopy., EPJ Web of Conferences, 113, ISSN:2100-014X, ISSN:2101-6275
Published: 2016
Full Text: View/download PDF

39. Review of particle physics - Particle Data Group

Author: Tanabashi, M., Grp, Particle Data, Hagiwara, K., Hikasa, K., Nakamura, K., Sumino, Y., Takahashi, F., Tanaka, J., Agashe, K., Aielli, G., Amsler, C., Antonelli, M., Asner, D. M., Baer, H., Banerjee, Sw., Barnett, R. M., Basaglia, T., Bauer, C. W., Beatty, J. J., Belousov, V. I., Beringer, J., Bethke, S., Bettini, A., Bichsel, H., Biebel, O., Black, K. M., Blucher, E., Buchmuller, O., Burkert, V., Bychkov, M. A., Cahn, R. N., Carena, M., Ceccucci, A., Cerri, A., Chakraborty, D., Chen, M. -C., Chivukula, R. S., Cowan, G., Dahl, O., D'Ambrosio, G., Damour, T., de Florian, D., de Gouvea, A., DeGrand, T., de Jong, P., Dissertori, G., Dobrescu, B. A., D'Onofrio, M., Doser, M., Drees, M., Dreiner, H. K., Dwyer, D. A., Eerola, P., Eidelman, S., Ellis, J., Erler, J., Ezhela, V. V., Fetscher, W., Fields, B. D., Firestone, R., Foster, B., Freitas, A., Gallagher, H., Garren, L., Gerber, H. -J., Gerbier, G., Gershon, T., Gershtein, Y., Gherghetta, T., Godizov, A. A., Goodman, M., Grab, C., Gritsan, A. V., Grojean, C., Groom, D. E., Grunewald, M., Gurtu, A., Gutsche, T., Haber, H. E., Hanhart, C., Hashimoto, S., Hayato, Y., Hayes, K. G., Hebecker, A., Heinemeyer, S., Heltsley, B., Hernandez-Rey, J. J., Hisano, J., Hocker, A., Holder, J., Holtkamp, A., Hyodo, T., Irwin, K. D., Johnson, K. F., Kado, M., Karliner, M., Katz, U. F., Klein, S. R., Klempt, E., Kowalewski, R. V., Krauss, F., Kreps, M., Krusche, B., Kuyanov, Yu. V., Kwon, Y., Lahav, O., Laiho, J., Lesgourgues, J., Liddle, A., Ligeti, Z., Lin, C. -J., Lippmann, C., Liss, T. M., Littenberg, L., Lugovsky, K. S., Lugovsky, S. B., Lusiani, A., Makida, Y., Maltoni, F., Mannel, T., Manohar, A. V., Marciano, W. J., Martin, A. D., Masoni, A., Matthews, J., Meissner, U. -G., Milstead, D., Mitche, R. E., Moenig, K., Molaro, P., Moortgat, F., Moskovic, M., Murayama, H., Narain, M., Nason, P., Navas, S., Neubert, M., Nevski, P., Nir, Y., Olive, K. A., Griso, S. Pagan, Parsons, J., Patrignani, C., Peacock, J. A., Pennington, M., Petcov, S. T., Petrov, V. A., Pianori, E., Piepke, A., Pomarol, A., Quadt, A., Rademacker, J., Raffelt, G., Ratcliff, B. N., Richardson, P., Ringwald, A., Roesler, S., Rolli, S., Romaniouk, A., Rosenberg, L. J., Rosner, J. L., Rybka, G., Ryutin, R. A., Sachrajda, C. T., Sakai, Y., Salam, G. P., Sarkar, S., Sauli, F., Schneider, O., Scholberg, K., Schwartz, A. J., Scott, D., Sharma, V., Sharpe, S. R., Shutt, T., Silari, M., Sjostrand, T., Skands, P., Skwarnicki, T., Smith, J. G., Smoot, G. F., Spanier, S., Spieler, H., Spiering, C., Stah, A., Stone, S. L., Sumiyoshi, T., Syphers, M. J., Terashi, K., Terning, J., Thoma, U., Thorne, R. S., Tiator, L., Titov, M., Tkachenko, N. P., Tornqvist, N. A., Tovey, D. R., Valencia, G., Van de Water, R., Varelas, N., Venanzoni, G., Verde, L., Vincter, M. G., Voge, P., Vogt, A., Wakely, S. P., Walkowiak, W., Walter, C. W., Wands, D., Ward, D. R., Wascko, M. O., Weiglein, G., Weinberg, D. H., Weinberg, E. J., White, M., Wiencke, L. R., Willocq, S., Woh, C. C., Womersley, J., Woody, C. L., Workman, R. L., Yao, W. -M., Zeller, G. P., Zenin, O. V., Zhu, R. -Y., Zhu, S. -L., Zimmermann, F., Zyla, P. A., Anderson, J., Fuller, L., Lugovsky, V. S., Schaffner, P., Patrignani, C, Agashe, K, Aielli, G, Amsler, C, Antonelli, M, Asner, D, Baer, H, Banerjee, S, Barnett, R, Basaglia, T, Bauer, C, Beatty, J, Belousov, V, Beringer, J, Bethke, S, Bichsel, H, Biebel, O, Blucher, E, Brooijmans, G, Buchmueller, O, Burkert, V, Bychkov, M, Cahn, R, Carena, M, Ceccucci, A, Cerri, A, Chakraborty, D, Chen, M, Chivukula, R, Copic, K, Cowan, G, Dahl, O, D'Ambrosio, G, Damour, T, de Florian, D, de Gouvea, A, Degrand, T, de Jong, P, Dissertori, G, Dobrescu, B, D'Onofrio, M, Doser, M, Drees, M, Dreiner, H, Dwyer, D, Eerola, P, Eidelman, S, Ellis, J, Erler, J, Ezhela, V, Fetscher, W, Fields, B, Foster, B, Freitas, A, Gallagher, H, Garren, L, Gerber, H, Gerbier, G, Gershon, T, Gherghetta, T, Godizov, A, Goodman, M, Grab, C, Gritsan, A, Grojean, C, Groom, D, Gruenewald, M, Gurtu, A, Gutsche, T, Haber, H, Hagiwara, K, Hanhart, C, Hashimoto, S, Hayato, Y, Hayes, K, Hebecker, A, Heltsley, B, Hernandez-Rey, J, Hikasa, K, Hisano, J, Hoecker, A, Holder, J, Holtkamp, A, Huston, J, Hyodo, T, Irwin, K, Jackson, J, Johnson, K, Kado, M, Karliner, M, Katz, U, Klein, S, Klempt, E, Kowalewski, R, Krauss, F, Kreps, M, Krusche, B, Kuyanov, Y, Kwon, Y, Lahav, O, Laiho, J, Langacker, P, Liddle, A, Ligeti, Z, Lin, C, Lippmann, C, Liss, T, Littenberg, L, Lugovsky, K, Lugovsky, S, Lusiani, A, Makida, Y, Maltoni, F, Mannel, T, Manohar, A, Marciano, W, Martin, A, Masoni, A, Matthews, J, Meissner, U, Milstead, D, Mitchell, R, Molaro, P, Monig, K, Moortgat, F, Mortonson, M, Murayama, H, Nakamura, K, Narain, M, Nason, P, Navas, S, Neubert, M, Nevski, P, Nir, Y, Olive, K, Griso, S, Parsons, J, Peacock, J, Pennington, M, Petcov, S, Petrov, V, Piepke, A, Pomarol, A, Quadt, A, Raby, S, Rademacker, J, Raffelt, G, Ratcliff, B, Richardson, P, Ringwald, A, Roesler, S, Rolli, S, Romaniouk, A, Rosenberg, L, Rosner, J, Rybka, G, Ryutin, R, Sachrajda, C, Sakai, Y, Salam, G, Sarkar, S, Sauli, F, Schneider, O, Scholberg, K, Schwartz, A, Scott, D, Sharma, V, Sharpe, S, Shutt, T, Silari, M, Sjostrand, T, Skands, P, Skwarnicki, T, Smith, J, Smoot, G, Spanier, S, Spieler, H, Spiering, C, Stahl, A, Stone, S, Sumino, Y, Sumiyoshi, T, Syphers, M, Takahashi, F, Tanabashi, M, Terashi, K, Terning, J, Thorne, R, Tiator, L, Titov, M, Tkachenko, N, Tornqvist, N, Tovey, D, Valencia, G, Van de Water, R, Varelas, N, Venanzoni, G, Vincter, M, Vogel, P, Vogt, A, Wakely, S, Walkowiak, W, Walter, C, Wands, D, Ward, D, Wascko, M, Weiglein, G, Weinberg, D, Weinberg, E, White, M, Wiencke, L, Wiliocq, S, Wohl, C, Wolfenstein, L, Womersley, J, Woody, C, Workman, R, Yao, W, Zeller, G, Zenin, O, Zhu, R, Zimmermann, F, Zyla, P, Anderson, J, Harper, G, Lugovsky, V, Schaffner, P, Patrignani, C., Agashe, K., Aielli, G., Amsler, C., Antonelli, M., Asner, D. M., Baer, H., Banerjee, S. w., Barnett, R. M., Basaglia, T., Bauer, C. W., Beatty, J. J., Belousov, V. I., Beringer, J., Bethke, S., Bichsel, H., Biebel, O., Blucher, E., Brooijmans, G., Buchmueller, O., Burkert, V., Bychkov, M. A., Cahn, R. N., Carena, M., Ceccucci, A., Cerri, A., Chakraborty, D., Chen, M. C., Chivukula, R. S., Copic, K., Cowan, G., Dahl, O., D'Ambrosio, G., Damour, T., de Florian, D., de Gouvea, A., Degrand, T., de Jong, P., Dissertori, G., Dobrescu, B. A., D'Onofrio, M., Doser, M., Drees, M., Dreiner, H. K., Dwyer, D. A., Eerola, P., Eidelman, S., Ellis, J., Erler, J., Ezhela, V. V., Fetscher, W., Fields, B. D., Foster, B., Freitas, A., Gallagher, H., Garren, L., Gerber, H. J., Gerbier, G., Gershon, T., Gherghetta, T., Godizov, A. A., Goodman, M., Grab, C., Gritsan, A. V., Grojean, C., Groom, D. E., Gruenewald, M., Gurtu, A., Gutsche, T., Haber, H. E., Hagiwara, K., Hanhart, C., Hashimoto, S., Hayato, Y., Hayes, K. G., Hebecker, A., Heltsley, B., Hernandez Rey, J. J., Hikasa, K., Hisano, J., Hoecker, A., Holder, J., Holtkamp, A., Huston, J., Hyodo, T., Irwin, K., Jackson, J. D., Johnson, K. F., Kado, M., Karliner, M., Katz, U. F., Klein, S. R., Klempt, E., Kowalewski, R. V., Krauss, F., Kreps, M., Krusche, B., Kuyanov, Y. u. V., Kwon, Y., Lahav, O., Laiho, J., Langacker, P., Liddle, A., Ligeti, Z., Lin, C. J., Lippmann, C., Liss, T. M., Littenberg, L., Lugovsky, K. S., Lugovsky, S. B., Lusiani, Alberto, Makida, Y., Maltoni, F., Mannel, T., Manohar, A. V., Marciano, W. J., Martin, A. D., Masoni, A., Matthews, J., Meissner, U. G., Milstead, D., Mitchell, R. E., Molaro, P., Monig, K., Moortgat, F., Mortonson, M. J., Murayama, H., Nakamura, K., Narain, M., Nason, P., Navas, S., Neubert, M., Nevski, P., Nir, Y., Olive, K. A., Griso, S. Pagan, Parsons, J., Peacock, J. A., Pennington, M., Petcov, S. T., Petrov, V. A., Piepke, A., Pomarol, A., Quadt, A., Raby, S., Rademacker, J., Raffelt, G., Ratcliff, B. N., Richardson, P., Ringwald, A., Roesler, S., Rolli, S., Romaniouk, A., Rosenberg, L. J., Rosner, J. L., Rybka, G., Ryutin, R. A., Sachrajda, C. T., Sakai, Y., Salam, G. P., Sarkar, S., Sauli, F., Schneider, O., Scholberg, K., Schwartz, A. J., Scott, D., Sharma, V., Sharpe, S. R., Shutt, T., Silari, M., Sjostrand, T., Skands, P., Skwarnicki, T., Smith, J. G., Smoot, G. F., Spanier, S., Spieler, H., Spiering, C., Stahl, A., Stone, S. L., Sumino, Y., Sumiyoshi, T., Syphers, M. J., Takahashi, F., Tanabashi, M., Terashi, K., Terning, J., Thorne, R. S., Tiator, L., Titov, M., Tkachenko, N. P., Tornqvist, N. A., Tovey, D., Valencia, G., Van de Water, R., Varelas, N., Venanzoni, G., Vincter, M. G., Vogel, P., Vogt, A., Wakely, S. P., Walkowiak, W., Walter, C. W., Wands, D., Ward, D. R., Wascko, M. O., Weiglein, G., Weinberg, D. H., Weinberg, E. J., White, M., Wiencke, L. R., Wiliocq, S., Wohl, C. C., Wolfenstein, L., Womersley, J., Woody, C. L., Workman, R. L., Yao, W. M., Zeller, G. P., Zenin, O. V., Zhu, R. Y., Zimmermann, F., Zyla, P. A., Anderson, J., Harper, G., Lugovsky, V. S., Schaffner, P., Arguin, J, Band, H, Bernardi, G, Blusk, S, Edwards, D, Gaisser, T, Golwala, S, Grunewald, M, Heffner, M, Junk, T, Karlen, D, Moenig, K, Pape, L, Stah, A, Stanev, T, Sphers, M, Woh, C, Wofenstein, L, Yamamoto, A, and Zhang, J
Subjects: PRODUCTION, MAGNETIC-MOMENT, PROTON-PROTON COLLISIONS, Settore FIS/01 - Fisica Sperimentale, High Energy Physics::Phenomenology, anomalous magnetic-moment, HEAVY FLAVOUR, Astrophysics::Cosmology and Extragalactic Astrophysics, PRODUCTION CROSS-SECTION, GRAND UNIFIED THEORIES, DEEP-INELASTIC SCATTERING, QUARK-PAIR PRODUCTION, higgs-boson production, double-beta-decay, deep-inelastic-scattering, ANOMALOUS, High Energy Physics::Experiment, STRONG-COUPLING CONSTANT, supersymmetric standard model, ELECTROWEAK SYMMETRY-BREAKING, TAU LEPTONS, chiral perturbation-theory, TO-LEADING-ORDER, HADRONIC-Z-DECAYS, HIGGS-BOSON
Abstract: The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavily revised, including a new review on Neutrinos in Cosmology., Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tables and all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of the Listings are now included in volume 1., The complete Review (both volumes) is published online on the website of the Particle Data Group (http://pdg.1b1.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is also available.
Published: 2016

40. Precision Measurement of the p(e,e ' p)pi(0) Reaction at Threshold

Author: Chirapatpimol, K., Shabestari, M. H., Lindgren, R. A., Smith, L. C., Annand, J. R. M., Higinbotham, D. W., Moffit, B., Nelyubin, V., Norum, B. E., Allada, K., Aniol, K., Ardashev, K., Armstrong, D. S., Arndt, R. A., Benmokhtar, F., Bernstein, A. M., Bertozzi, W., Briscoe, W. J., Bimbot, L., Camsonne, A., Chen, J. -P., Choi, S., Chudakov, E., Cisbani, E., Cusanno, F., Dalton, M. M., Dutta, C., Egiyan, K., Fernandez-Ramirez, C., Feuerbach, R., Fissum, K. G., Frullani, S., Garibaldi, F., Gayou, O., Gilman, R., Gilad, S., Goity, J., Gomez, J., Hahn, B., Hamilton, D., Hansen, J. -O., Huang, J., Igarashi, R., Ireland, D., de Jager, C. W., Jin, X., Jiang, X., Jinasundera, T., Kellie, J., and Watts, Daniel
Subjects: FORM-FACTORS, NEUTRAL-PION ELECTROPRODUCTION, PHOTOPRODUCTION, NEAR-THRESHOLD, Nuclear Experiment, PROTON, CHIRAL PERTURBATION-THEORY
Abstract: New results are reported from a measurement of pi(0) electroproduction near threshold using the p(e , e'p)pi(0) reaction. The experiment was designed to determine precisely the energy dependence of s- and p-wave electromagnetic multipoles as a stringent test of the predictions of chiral perturbation theory (ChPT). The data were taken with an electron beam energy of 1192 MeV using a two-spectrometer setup in Hall A at Jefferson Lab. For the first time, complete coverage of the. phi*(pi) and. theta*(pi) angles in the p pi(0) center of mass was obtained for invariant energies above threshold from 0.5 up to 15 MeV. The 4-momentum transfer Q(2) coverage ranges from 0.05 to 0.155 (GeV/c)(2) in fine steps. A simple phenomenological analysis of our data shows strong disagreement with p-wave predictions from ChPT for Q(2) > 0.07 (GeV/c)(2), while the s-wave predictions are in reasonable agreement.
Published: 2015
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41. Effective Lagrangians for quantum many-body systems

Author: Aleksi Vuorinen, Jens O. Andersen, Tomáš Brauner, Christoph P. Hofmann, Department of Physics, and Helsinki Institute of Physics
Subjects: Global Symmetries, High Energy Physics - Theory, Nuclear and High Energy Physics, Chiral perturbation theory, SYMMETRY, Spontaneous symmetry breaking, education, FOS: Physical sciences, CHIRAL PERTURBATION-THEORY, 114 Physical sciences, 01 natural sciences, Many-body problem, Condensed Matter - Strongly Correlated Electrons, Theoretical physics, High Energy Physics - Phenomenology (hep-ph), THERMODYNAMICS, 0103 physical sciences, Effective field theory, 010306 general physics, Physics, Strongly Correlated Electrons (cond-mat.str-el), ONE-LOOP, 010308 nuclear & particles physics, ORDER, Spontaneous Symmetry Breaking, Symmetry (physics), EFFECTIVE-FIELD THEORY, High Energy Physics - Phenomenology, Explicit symmetry breaking, SPIN, High Energy Physics - Theory (hep-th), Continuous symmetry, Chiral Lagrangians, Goldstone boson, GOLDSTONE BOSONS, CURRENT-ALGEBRA, PHENOMENOLOGICAL LAGRANGIANS
Abstract: The low-energy and low-momentum dynamics of systems with a spontaneously broken continuous symmetry is dominated by the ensuing Nambu-Goldstone bosons. It can be conveniently encoded in a model-independent effective field theory whose structure is fixed by symmetry up to a set of effective coupling constants. We construct the most general effective Lagrangian for the Nambu-Goldstone bosons of spontaneously broken global internal symmetry up to the fourth order in derivatives. Rotational invariance and spatial dimensionality of one, two or three are assumed in order to obtain compact explicit expressions, but our method is completely general and can be applied without modifications to condensed matter systems with a discrete space group as well as to higher-dimensional theories. The general low-energy effective Lagrangian for relativistic systems follows as a special case. We also discuss the effects of explicit symmetry breaking and classify the corresponding terms in the Lagrangian. Diverse examples are worked out in order to make the results accessible to a wide theoretical physics community., Comment: 45 pages
Published: 2014

42. Model-independent determination of the Lamb shift in muonic hydrogen and the proton radius

Author: Peset Martín, Clara María, Pineda, Antonio, Peset Martín, Clara María, and Pineda, Antonio
Abstract: We obtain a model-independent expression for the Lamb shift in muonic hydrogen. This expression includes the leading logarithmic terms, as well as the leading hadronic effects. The latter are controlled by the chiral theory, which allows for their model-independent determination. In this paper we give the missing piece for their complete expression including the pion and Delta particles. Out of this analysis, and the experimental measurement of the Lamb shift in muonic hydrogen, we determine the electromagnetic proton radius: fm. This number is at variance with respect to the CODATA value. The accuracy of our result is limited by uncomputed terms of . This parametric control of the uncertainties allows us to obtain a model-independent estimate of the error, which is dominated by hadronic effects., Ministerio de Ciencia e Innovación (España), Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2015

43. Production cross section estimates for strongly-interacting electroweak symmetry breaking sector resonances at particle colliders

Author: Dobado González, Antonio, Guo, Feng-Kuo, Llanes Estrada, Felipe José, Dobado González, Antonio, Guo, Feng-Kuo, and Llanes Estrada, Felipe José
Abstract: © 2015 Chinese Physical Society and IOP Publishing Ltd. We warmly thank intense discussions and information exchange with J. J. Sanz Cillero and D. Espriu. We are grateful to U.-G. Meißner for a careful reading of the manuscript. This work is partially supported by the Spanish Excellence Network on Hadronic Physics FIS2014-57026-REDT, by grants UCM:910309, MINECO:FPA2011-27853-C02-01, MINECO:FPA2014-53375-C2-1-P, by DFG and NSFC through funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD” (NSFC Grant No. 11261130311) and by NSFC (Grant No. 11165005)., We are exploring a generic strongly-interacting Electroweak Symmetry Breaking Sector (EWSBS) with the low-energy effectie field theory for the four experimentally known particles (W^(±)_(L), Z_(L), h) and its dispersion-relation based unitary extension. In this contribution we provide simple estimates for the production cross section of pairs of the EWSBS bosons and their resonances at proton-proton colliders as well as in a future e^(−)e^(+) (or potentially a µ^(−)µ^(+)) collider with a typical few-TeV energy. We examine the simplest production mechanisms, tree-level production through a W (dominant when quantum numbers allow) and the simple effective boson approximation (in which the electroweak bosons are considered as collinear partons of the colliding fermions). We exemplify with custodial isovector and isotensor resonances at 2 TeV, the energy currently being discussed because of a slight excess in the ATLAS 2-jet data. We find it hard, though not unthinkable, to ascribe this excess to one of these W_(L)W_(L) rescattering resonances. An isovector resonance could be produced at a rate smaller than, but close to earlier CMS exclusion bounds, depending on the parameters of the effective theory. The ZZ excess is then problematic and requires additional physics (such as an additional scalar resonance). The isotensor one (that would describe all charge combinations) has a smaller cross section., Ministerio de Economía y Competitividad (MINECO), Universidad Complutense de Madrid, Spanish Excellence Network on Hadronic Physics, DFG Germany, NSFC Germany, Depto. de Física Teórica, Fac. de Ciencias Físicas, TRUE, pub
Published: 2015

44. Analysis of gamma(*) Lambda -> Sigma(0) transition in QCD

Author: Aliev, Takhmasib Mamed, Azizi, Kazem, Savcı, Mustafa, Doğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, TR167850, and Belirlenecek
Subjects: Chiral Perturbation-Theory, Masses, Baryon Magnetic-Moments, Nuclear Theory, High Energy Physics::Phenomenology, Form-Factors
Abstract: The gamma(*) Lambda -> Sigma(0) transition form factors are investigated within the light- cone QCD sum rules method. Using the most general form of the interpolating current of Sigma(0) baryon and the distribution amplitudes of baryon we calculate the Q(2) dependence of the electromagnetic form factors. Our results are compared with the predictions of the covariant spectator quark model.
Published: 2013

45. Renormalization group running of dimension-six sources of parity and time-reversal violation

Author: J. de Vries and Wouter Dekens
Subjects: perturbation theory [quantum chromodynamics], Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Hadron, FOS: Physical sciences, correction [quantum chromodynamics], CHIRAL PERTURBATION-THEORY, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology (hep-ph), electric moment [nucleus], ELECTRIC-DIPOLE-MOMENT, correction [electroweak interaction], new interaction, Neutron, ddc:530, Renormalization Group, Gauge theory, HIGGS-BOSON-EXCHANGE, NUCLEON, SUPERSYMMETRY, Quantum chromodynamics, Physics, FORM-FACTOR, WW-GAMMA COUPLINGS, gauge [invariance], Electroweak interaction, High Energy Physics::Phenomenology, Parity (physics), Renormalization group, High Energy Physics - Phenomenology, electric moment [n], CP violation, CP-VIOLATION, Beyond Standard Model, High Energy Physics::Experiment, NEUTRON, violation [parity], Electroweak scale, violation [time reversal], dimension: 6 [operator], renormalization group, QUARK-MODEL
Abstract: We perform a systematic study of flavor-diagonal parity- and time-reversal-violating operators of dimension six which could arise from physics beyond the SM. We begin at the unknown high-energy scale where these operators originate. At this scale the operators are constrained by gauge invariance which has important consequences for the form of effective operators at lower energies. In particular for the four-quark operators. We calculate one-loop QCD and, when necessary, electroweak corrections to the operators and evolve them down to the electroweak scale and subsequently to hadronic scales. We find that for most operators QCD corrections are not particularly significant. We derive a set of operators at low energy which is expected to dominate hadronic and nuclear EDMs due to physics beyond the SM and obtain quantitative relations between these operators and the original dimension-six operators at the high-energy scale. We use the limit on the neutron EDM to set bounds on the dimension-six operators., Matches published version, 35 pages, 6 figures, minor corrections
Published: 2013
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46. Low-energy pion-nucleon scattering

Subjects: High Energy Physics::Lattice, Nuclear Theory, EFFECTIVE LAGRANGIANS, COUPLING-CONSTANT, CHIRAL PERTURBATION-THEORY, SIGMA-TERM, PARTIAL-WAVE ANALYSIS, MULTI-QUARK HADRONS, N PARTIAL-WAVES, GROUND-STATE, High Energy Physics::Experiment, Nuclear Experiment, Q2QBAR2 MESONS, PHASE-SHIFT ANALYSIS
Abstract: Several topics in pion-nucleon scattering at low energies are addressed. First, we review the predictions of chiral symmetry for the near-threshold region. The pion-nucleon scattering lengths and the Cheng-Dashen theorem with the related issue of the strangeness content of the nucleon are discussed in some detail. Finally, the status of the scalar mesons and the relevance of the pomeron and the concept of duality for pion-nucleon dynamics is pointed out.
Published: 1996

47. Toroidal Quadrupole Form Factor of the Deuteron

Author: Robertus Timmermans, U. van Kolck, Emanuele Mereghetti, J. de Vries, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and High-Energy Frontier
Subjects: Chiral perturbation theory, Nuclear Theory, Physics beyond the Standard Model, High Energy Physics::Lattice, QCD vacuum, 0 [higher-order], torus, 01 natural sciences, High Energy Physics - Phenomenology (hep-ph), Effective field theory, NUCLEON, chiral [effective field theory], Physics, new physics, conservation law [parity], TIME-REVERSAL VIOLATION, symmetry [time reversal], EFFECTIVE-FIELD THEORY, SUB-LEADING ORDER, High Energy Physics - Phenomenology, T-symmetry, Quantum electrodynamics, Nuclear and High Energy Physics, Particle physics, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], FOS: Physical sciences, Weak interaction, CHIRAL PERTURBATION-THEORY, Nuclear Theory (nucl-th), Pion, weak interaction, 0103 physical sciences, PARTICLES, ANAPOLE, ddc:530, 010306 general physics, quark gluon, ELASTIC SCATTERING, form factor [deuteron], ELECTROMAGNETIC PROPERTIES, 010308 nuclear & particles physics, vacuum state [quantum chromodynamics], High Energy Physics::Phenomenology, exchange [pi], Parity (physics), moment, Automatic Keywords, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, violation [parity], CP-INVARIANCE, violation [time reversal]
Abstract: We calculate the toroidal quadrupole moment and form factor of the deuteron, which violate time-reversal symmetry but conserve parity, at leading order in two-flavor chiral effective field theory with perturbative pion exchange. We take into account time-reversal and parity violation owing to the QCD vacuum angle combined with parity violation resulting from the weak interaction in the Standard Model. We also consider time-reversal and parity violation that at the quark-gluon level results from effective dimension-six operators originating from physics beyond the Standard Model.
Published: 2013
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48. Virtual Compton scattering and the generalized polarizabilities of the proton at Q²=0.92 and 1.76 GeV²

Author: Fonvieille, H, Laveissiere, G, Degrande, N, Jaminion, S, Jutier, C, Todor, L, Di Salvo, R, Van Hoorebeke, Luc, Alexa, LC, Anderson, BD, Aniol, KA, Arundell, K, Audit, G, Auerbach, L, Baker, FT, Baylac, M, Berthot, J, Bertin, PY, Bertozzi, W, Bimbot, L, Boeglin, WU, Brash, EJ, Breton, V, Breuer, H, Burtin, E, Calarco, JR, Cardman, LS, Cavata, C, Chang, CC, Chen, JP, Chudakov, E, Cisbani, E, Dale, DS, de Jager, CW, De Leo, R, Deur, A, d'Hose, N, Dodge, GE, Domingo, JJ, Elouadrhiri, L, Epstein, MB, Ewell, LA, Finn, JM, Fissum, KG, Fournier, G, Frois, B, Frullani, S, Furget, C, Gao, H, Gao, J, Garibaldi, F, Gasparian, A, Gilad, S, Gilman, R, Glamazdin, A, Glashausser, C, Gomez, J, Gorbenko, V, Grenier, P, Guichon, PAM, Hansen, JO, Holmes, R, Holtrop, M, Howell, C, Huber, GM, Hyde, CE, Incerti, S, Iodice, M, Jardillier, J, Jones, MK, Kahl, W, Kato, S, Katramatou, AT, Kelly, JJ, Kerhoas, S, Ketikyan, A, Khayat, M, Kino, K, Kox, S, Kramer, LH, Kumar, KS, Kumbartzki, G, Kuss, M, Leone, A, LeRose, JJ, Liang, M, Lindgren, RA, Liyanage, N, Lolos, GJ, Lourie, RW, Madey, R, Maeda, K, Malov, S, Manley, DM, Marchand, C, Marchand, D, Margaziotis, DJ, Markowitz, P, Marroncle, J, Martino, J, McCormick, K, McIntyre, J, Mehrabyan, S, Merchez, F, Meziani, ZE, Michaels, R, Miller, GW, Mougey, JY, Nanda, SK, Neyret, D, Offermann, EAJM, Papandreou, Z, Pasquini, B, Perdrisat, CF, Perrino, R, Petratos, GG, Platchkov, S, Pomatsalyuk, R, Prout, DL, Punjabi, VA, Pussieux, T, Quemener, G, Ransome, RD, Ravel, O, Real, JS, Renard, F, Roblin, Y, Rowntree, D, Rutledge, G, Rutt, PM, Saha, A, Saito, T, Sarty, AJ, Serdarevic, A, Smith, T, Smirnov, G, Soldi, K, Sorokin, P, Souder, PA, Suleiman, R, Templon, JA, Terasawa, T, Tieulent, R, Tomasi-Gustaffson, E, Tsubota, H, Ueno, H, Ulmer, PE, Urciuoli, GM, Vanderhaeghen, M, Van der Meer, RLJ, Van de Vyver, R, Vernin, P, Vlahovic, B, Voskanyan, H, Voutier, E, Watson, JW, Weinstein, LB, Wijesooriya, K, Wilson, R, Wojtsekhowski, BB, Zainea, DG, Zhang, WM, Zhao, J, and Zhou, ZL
Subjects: Physics and Astronomy, LINEAR SIGMA-MODEL, NUCLEON POLARIZABILITIES, AMPLITUDE, ELECTROPRODUCTION, LOW-ENERGY, Nuclear Experiment, CHIRAL PERTURBATION-THEORY, REAL, THRESHOLD
Abstract: Virtual Compton scattering (VCS) on the proton has been studied at the Jefferson Laboratory using the exclusive photon electroproduction reaction ep -> ep gamma. This paper gives a detailed account of the analysis which has led to the determination of the structure functions P-LL - P-TT/epsilon and P-LT and the electric and magnetic generalized polarizabilities (GPs) alpha(E) (Q(2)) and beta(M) (Q(2)) at values of the four-momentum transfer squared Q(2) = 0.92 and 1.76 GeV2. These data, together with the results of VCS experiments at lower momenta, help building a coherent picture of the electric and magnetic GPs of the proton over the full measured Q(2) range and point to their nontrivial behavior.
Published: 2012

49. Signatures of three-nucleon interactions in few-nucleon systems

Author: Evgeny Epelbaum, A. Nogga, Nasser Kalantar-Nayestanaki, J. G. Messchendorp, and KVI - Center for Advanced Radiation Technology
Subjects: interaction [nucleon nucleon], interaction [nucleon deuteron], potential, Nuclear Theory, SPIN CORRELATION-MEASUREMENTS, Hadron, review, General Physics and Astronomy, FOS: Physical sciences, elastic scattering [nucleon nucleon], 01 natural sciences, CHIRAL PERTURBATION-THEORY, PROTON-PROTON BREMSSTRAHLUNG, POLARIZED ION-SOURCE, Nuclear Theory (nucl-th), DEUTERON BREAKUP REACTION, Theoretical physics, correlation [spin], 0103 physical sciences, MONTE-CARLO CALCULATIONS, ddc:530, Nuclear Experiment (nucl-ex), 010306 general physics, numerical calculations, Nuclear Experiment, chiral [effective field theory], Simple (philosophy), Physics, polarization, 010308 nuclear & particles physics, nuclear force, bibliography, Observable, EFFECTIVE-FIELD THEORY, three-body problem, interpretation of experiments, differential cross section, TOTAL CROSS-SECTION, many-body problem, analyzing power, Nucleon, TO-LEADING ORDER, SCATTERING-LENGTH MEASUREMENTS
Abstract: Recent experimental results in three-body systems have unambiguously shown that calculations based only on nucleon-nucleon forces fail to accurately describe many experimental observables and one needs to include effects which are beyond the realm of the two-body potentials. This conclusion owes its significance to the fact that experiments and calculations can both be performed with a high accuracy. In this review, both theoretical and experimental achievements of the past decade will be underlined. Selected results will be presented. The discussion on the effects of the three-nucleon forces is, however, limited to the hadronic sector. It will be shown that despite the major successes in describing these seemingly simple systems, there are still clear discrepancies between data and the state-of-the-art calculations., accepted for publication in Rep. Prog. Phys
Published: 2012
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50. Kinematical constraints in fermion-antifermion systems

Author: Olaf Scholten, S. Stoica, M. F. M. Lutz, and Research unit Nuclear & Hadron Physics
Subjects: Nuclear and High Energy Physics, Particle physics, Field (physics), Nuclear Theory, SINGULARITIES, DISPERSION RELATIONS, FOS: Physical sciences, CHIRAL PERTURBATION-THEORY, NUCLEON-SCATTERING, Nuclear Theory (nucl-th), Theoretical physics, High Energy Physics - Phenomenology (hep-ph), Effective field theory, GENERAL THEORY, Spin-½, Physics, CONSTRUCTION, Scattering, MESON-BARYON SCATTERING, Fermion, Helicity, Scattering amplitude, High Energy Physics - Phenomenology, HELICITY AMPLITUDES, SPIN, Gravitational singularity, BETHE-SALPETER APPROACH
Abstract: We consider the scattering of fermions off antifermions with spin 1/2 and 3/2. Starting from helicity partial-wave scattering amplitudes we derive transformations that eliminate all kinematical constraints. Such amplitudes are expected to satisfy partial-wave dispersion relations and therefore provide a suitable basis for data analysis and the construction of effective field theories. Our derivation relies on a decomposition of the various scattering amplitudes into suitable sets of invariant functions., 12 pages, 3 tables
Published: 2011
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