Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeV

CMS Collaboration

doi:10.1016/j.physletb.2016.10.007

Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeV

CMS Collaboration

Yerevan Physics Institute
Institut für Hochenergiephysik
Vienna University of Technology
National Centre for Particle and High Energy Physics
University of Antwerp
Universite Paris-Saclay
European Organization for Nuclear Research
Imperial College London
Vrjie Universiteit Brussel
Université Libre de Bruxelles
State Key Laboratory of Nuclear Physics and Technology
Ghent University
Université Paris-Sud
University of Louvain
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Rua São Francisco de Xavier
University of Campinas (UNICAMP)
São Paulo State University
Federal University of ABC (UFABC)
CNRS
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics, Chinese Academy of Sciences
c/o DESY
Universidad de Los Andes, Colombia
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
Faculty of Science, University of Split
Ruđer Bošković Institute
University of Cyprus
Joint Institute for Nuclear Research, Dubna
Charles University
Universidad San Francisco de Quito
Suez University
Kyungpook National University
Egyptian Network of High Energy Physics
Ain Shams University
Cairo University
Texas A&M University at Qatar
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
LUT University
Ip Paris
Université de Haute Alsace
Université de Strasbourg
IGFL, Université de Lyon, Université Lyon 1
Moscow State University
Tbilisi State University
Georgian Technical University
RWTH Aachen University
Universität Hamburg
Joint Faculty of the Brandenburg University of Technology Cottbus Senftenberg
Institut für Experimentelle Kernphysik
NCSR Demokritos
University of Athens
University of Ioannina
Eötvös Loránd University
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
National Institute of Science Education and Research
Indian Institute of Science Education and Research Bhopal
Institute of Physics Bhubaneswar
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
University of Visva-Bharati
University of Ruhuna
Indian Institute of Science Education and Research (IISER)
Institute for Research in Fundamental Sciences (IPM)
Isfahan University of Technology
University of Tehran
Islamic Azad University, Science and Research Branch
University College Dublin
INFN Sezione di Bari
Università degli studi di Bari Aldo Moro
Politecnico di Bari
INFN Sezione di Bologna
University of Bologna
INFN Sezione di Catania
Università degli Studi di Catania
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University of Florence
LNF-INFN
Sezione di Genova
University of Genoa
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
INFN Sezione di Napoli
Università degli Studi della Basilicata
Università G. Marconi
University of Naples Federico II
INFN
University of Padova
Bogazici University
Marmara University
Kafkas University
Istanbul Bilgi University
Yildiz Technical University
INFN Sezione di Pavia
University of Pavia
INFN Sezione di Perugia
University of Perugia
University of Siena
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Scuola Normale Superiore di Pisa
University of Pisa
Purdue University
Sezione di Roma
Università di Roma
INFN Sezione di Torino
University of Turin
Laboratory of Molecular Pathology
INFN Sezione di Trieste
University of Trieste
Chonbuk National University
Hanyang University
Korea University
Seoul National University
University of Seoul
Sungkyunkwan University
Vilnius University
University Malaya
International Islamic University of Malaysia
MOSTI
CINVESTAV-IPN
Consejo Nacional de Ciencia y Tecnología
Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosi
University of Auckland
University of Canterbury
Quaid-i-Azam University
National Centre for Nuclear Research
University of Warsaw
Warsaw University of Technology
Lisboa
Institute for Nuclear Research of the Russian Academy of Sciences
Mimar Sinan University
Petersburg Nuclear Physics Institute (PNPI)
St. Petersburg State Polytechnical University
University of Florida
Institute for Theoretical and Experimental Physics
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
National Research Nuclear University MEPhI
California Institute of Technology
Kurchatov Institute
University of Belgrade
University of Belgrade
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Univ. Cantabria
National Technical University of Athens
Riga Technical University
Paul Scherrer Institut
ETH Zurich
University of Zurich
University of Bern
National Central University
National Taiwan University
Chulalongkorn University
Cukurova University
Gaziosmanpasa University
Mersin University
Cag University
Piri Reis University
Adiyaman University
Middle East Technical University (METU)
Ozyegin University
Izmir Institute of Technology
Istanbul Technical University
Hacettepe University
Academy of Science of Ukraine
Kharkov Institute of Physics and Technology
University of Bristol
CCLRC Rutherford Appleton Laboratory
University of Southampton
Instituto de Astrofisica de Canarias
Brunel University London
Baylor University
University of Alabama
Boston University
Women and Infants Hospital of Rhode Island-Warren Alpert Medical School of Brown University
University of California, Davis
University of California, Los Angeles
University of California, Riverside
University of California, San Diego
Utah Valley University
University of California, Santa Barbara
Carnegie Mellon University
University of Colorado Boulder
Cornell University
Fairfield University
Fermi National Accelerator Laboratory
Florida International University
Florida State University
Florida Institute of Technology
FacoltàIngegneria
University of Illinois at Chicago
Argonne National Laboratory
University of Iowa
Erzincan University
Johns Hopkins University
University of Kansas
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland, College Park
Massachusetts Institute of Technology
University of Minnesota Twin Cities
University of Mississippi
University of Nebraska-Lincoln
University at Buffalo, The State University of New York
Northeastern University
Northwestern University
University of Notre Dame
The Ohio State University
Princeton University
University of Puerto Rico
Purdue University Northwest
Rice University
University of Rochester
Rutgers University–New Brunswick
University of Tennessee
Texas A&M University
Texas Tech University
Vanderbilt University
University of Virginia
Wayne State University
University of Wisconsin-Madison

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

The W boson helicity fractions from top quark decays in tt‾ events are measured using data from proton–proton collisions at a centre-of-mass energy of 8TeV. The data were collected in 2012 with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8fb⁻¹. Events are reconstructed with either one muon or one electron, along with four jets in the final state, with two of the jets being identified as originating from b quarks. The measured helicity fractions from both channels are combined, yielding F₀=0.681±0.012(stat)±0.023(syst), F_L=0.323±0.008(stat)±0.014(syst), and F_R=−0.004±0.005(stat)±0.014(syst) for the longitudinal, left-, and right-handed components of the helicity, respectively. These measurements of the W boson helicity fractions are the most accurate to date and they agree with the predictions from the standard model.

langue originale	Anglais
Pages (de - à)	512-534
Nombre de pages	23
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	762
Les DOIs	https://doi.org/10.1016/j.physletb.2016.10.007
état	Publié - 10 nov. 2016

Accès au document

10.1016/j.physletb.2016.10.007

Contient cette citation

@article{78eec9ca2e5645f598e5d753822f4bc9,

title = "Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeV",

abstract = "The W boson helicity fractions from top quark decays in tt‾ events are measured using data from proton–proton collisions at a centre-of-mass energy of 8TeV. The data were collected in 2012 with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8fb−1. Events are reconstructed with either one muon or one electron, along with four jets in the final state, with two of the jets being identified as originating from b quarks. The measured helicity fractions from both channels are combined, yielding F0=0.681±0.012(stat)±0.023(syst), FL=0.323±0.008(stat)±0.014(syst), and FR=−0.004±0.005(stat)±0.014(syst) for the longitudinal, left-, and right-handed components of the helicity, respectively. These measurements of the W boson helicity fractions are the most accurate to date and they agree with the predictions from the standard model.",

keywords = "Anomalous couplings, CMS, Helicity, Physics, Top",

author = "\{CMS Collaboration\} and V. Khachatryan and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and E. Asilar and T. Bergauer and J. Brandstetter and E. Brondolin and M. Dragicevic and J. Er{\"o} and M. Flechl and M. Friedl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and C. Hartl and N. H{\"o}rmann and J. Hrubec and M. Jeitler and A. K{\"o}nig and I. Kr{\"a}tschmer and D. Liko and T. Matsushita and I. Mikulec and D. Rabady and N. Rad and B. Rahbaran and H. Rohringer and J. Schieck and J. Strauss and W. Treberer-Treberspurg and W. Waltenberger and Wulz, \{C. E.\} and V. Mossolov and N. Shumeiko and \{Suarez Gonzalez\}, J. and S. Alderweireldt and \{De Wolf\}, \{E. A.\} and A. Zghiche and F. Beaudette and C. Charlot and O. Davignon and \{Granierde Cassagnac\}, R. and M. Nguyen and C. Ochando and P. Paganini and R. Salerno and Y. Sirois and A. Zabi and Sauvan, \{J. B.\} and \{De Wit\}, A.",

note = "Publisher Copyright: {\textcopyright} 2016 The Author",

year = "2016",

month = nov,

day = "10",

doi = "10.1016/j.physletb.2016.10.007",

language = "English",

volume = "762",

pages = "512--534",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeV. / CMS Collaboration.
Dans: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol 762, 10.11.2016, p. 512-534.

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

TY - JOUR

T1 - Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeV

AU - CMS Collaboration

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Brondolin, E.

AU - Dragicevic, M.

AU - Erö, J.

AU - Flechl, M.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hartl, C.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - König, A.

AU - Krätschmer, I.

AU - Liko, D.

AU - Matsushita, T.

AU - Mikulec, I.

AU - Rabady, D.

AU - Rad, N.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schieck, J.

AU - Strauss, J.

AU - Treberer-Treberspurg, W.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Alderweireldt, S.

AU - De Wolf, E. A.

AU - Zghiche, A.

AU - Beaudette, F.

AU - Charlot, C.

AU - Davignon, O.

AU - Granierde Cassagnac, R.

AU - Nguyen, M.

AU - Ochando, C.

AU - Paganini, P.

AU - Salerno, R.

AU - Sirois, Y.

AU - Zabi, A.

AU - Sauvan, J. B.

AU - De Wit, A.

PY - 2016/11/10

Y1 - 2016/11/10

N2 - The W boson helicity fractions from top quark decays in tt‾ events are measured using data from proton–proton collisions at a centre-of-mass energy of 8TeV. The data were collected in 2012 with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8fb−1. Events are reconstructed with either one muon or one electron, along with four jets in the final state, with two of the jets being identified as originating from b quarks. The measured helicity fractions from both channels are combined, yielding F0=0.681±0.012(stat)±0.023(syst), FL=0.323±0.008(stat)±0.014(syst), and FR=−0.004±0.005(stat)±0.014(syst) for the longitudinal, left-, and right-handed components of the helicity, respectively. These measurements of the W boson helicity fractions are the most accurate to date and they agree with the predictions from the standard model.

AB - The W boson helicity fractions from top quark decays in tt‾ events are measured using data from proton–proton collisions at a centre-of-mass energy of 8TeV. The data were collected in 2012 with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8fb−1. Events are reconstructed with either one muon or one electron, along with four jets in the final state, with two of the jets being identified as originating from b quarks. The measured helicity fractions from both channels are combined, yielding F0=0.681±0.012(stat)±0.023(syst), FL=0.323±0.008(stat)±0.014(syst), and FR=−0.004±0.005(stat)±0.014(syst) for the longitudinal, left-, and right-handed components of the helicity, respectively. These measurements of the W boson helicity fractions are the most accurate to date and they agree with the predictions from the standard model.

KW - Anomalous couplings

KW - CMS

KW - Helicity

KW - Physics

KW - Top

U2 - 10.1016/j.physletb.2016.10.007

DO - 10.1016/j.physletb.2016.10.007

M3 - Article

AN - SCOPUS:84994030197

SN - 0370-2693

VL - 762

SP - 512

EP - 534

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Measurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeV

Résumé

Accès au document

Empreinte digitale

Contient cette citation