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

Física

A. Alikhanian Yerevan Institute of Physics
Institut für Hochenergiephysik der OeAW
TU Wien
Belarusian State University
University of Antwerp
Vrije Universiteit Brussel
Université Libre de Bruxelles
Peking University
Ghent University
IN2P3-CNRS
Université catholique de Louvain
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro
Universidade Estadual de Campinas
Universidade Estadual Paulista Júlio de Mesquita Filho
Universidade Federal do ABC
CNRS
Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics Chinese Academy of Science
Deutsches Elektronen-Synchrotron (DESY)
Universidad de los Andes Colombia
University of Split
Faculty of Science, University of Split
Institute Rudjer Boskovic
University of Cyprus
Joint Institute for Nuclear Research, Dubna
Charles University
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
Lappeenranta University of Technology
CEA/Saclay
Laboratoire Leprince-Ringuet
Université de Haute-Alsace
Institut Pluridisciplinaire Hubert Curien
CERN
Universite Claude Bernard Lyon 1
Lomonosov Moscow State University
Tbilisi State University
Georgian Technical University
RWTH Aachen University
University of Hamburg
Brandenburg University of Technology
Institut für Experimentelle Kernphysik
NCSR Demokritos
National and Kapodistrian University of Athens
University of Ioannina
Eötvös Loránd University
KFKI Research Institute for Particle and Nuclear Physics
Institute for Nuclear Research
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
Visva-Bharati University
University of Ruhuna
Indian Institute of Science Education and Research Pune
Institute for Research for Fundamental Sciences
Isfahan University of Technology
University of Tehran
Islamic Azad University, Science and Research Branch
University College Dublin
INFN Sezione di Bari
Université di Bari
Polytechnic University of Bari
INFN Sezione di Bologna
University of Bologna
National Institute for Nuclear Physics
University of Catania
INFN Sezione di Firenze
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University of Genoa
Université di Milano-Bicocca
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Bogazici University
Marmara University
Kafkas University
Istanbul Bilgi University
Yildiz Technical University
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Scuola Normale Superiore di Pisa
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Purdue University
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Chonbuk National University
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Korea University
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Sungkyunkwan University
Vilnius University
Universiti Malaya
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Malaysian Nuclear Agency
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Consejo Nacional de Ciencia y Tecnologia Mexico
Universidad Iberoamericana (UIA)
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosí
University of Auckland
University of Canterbury
Quaid-I-Azam University
National Centre for Nuclear Research
University of Warsaw
Warsaw University of Technology
Laboratório de Instrumentação e Fisica Experimental de Partículas
RAS - Institute for Nuclear Research
Mimar Sinan Guzel Sanatlar University
Petersburg Nuclear Physics Institute (PNPI)
St. Petersburg State Polytechnical University
University of Florida
Institute for Theoretical and Experimental Physics
RAS - P.N. Lebedev Physics Institute
National Research Nuclear University ‘Moscow Engineering Physics Institute’ (MEPhI)
California Institute of Technology
Institute for High Energy Physics
University of Belgrade
University of Belgrade
CIEMAT
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Universidad de Cantabria
National Technical University of Athens
Riga Technical University
Paul Scherrer Institut
ETH Zurich
University of Zurich
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National Central University
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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
Institute for Scintillation Materials of National Academy of Science of Ukraine
NASU - Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
University of Southampton
Imperial College London
Instituto de Astrofísica de Canarias
Brunel University London
Baylor University
University of Alabama
Boston University
Brown University
University of California, Davis
University of California at Los Angeles
University of California at Riverside
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Carnegie Mellon University
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Cornell University
Fairfield University
Fermi National Accelerator Laboratory
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Florida State University
Florida Institute of Technology
Universitàdi Roma
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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
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Northeastern University
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Rice University
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Rutgers University–New Brunswick
University of Tennessee
Texas AandM University
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Vanderbilt University
University of Virginia
Wayne State University
University of Wisconsin-Madison

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62 Citas (Scopus)

Resumen

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.

Idioma original	Inglés
Páginas (desde-hasta)	512-534
Número de páginas	23
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	762
DOI	https://doi.org/10.1016/j.physletb.2016.10.007
Estado	Publicada - 10 nov. 2016

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10.1016/j.physletb.2016.10.007

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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 X. Janssen and J. Lauwers and \{Van De Klundert\}, M. and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Remortel\}, N. and \{Van Spilbeeck\}, A. and \{Abu Zeid\}, S. and F. Blekman and J. D'Hondt and N. Daci and \{De Bruyn\}, I. and \{Carrera Jarrin\}, E.",

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

year = "2016",

month = nov,

day = "10",

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

language = "Ingl{\'e}s",

volume = "762",

pages = "512--534",

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

issn = "0370-2693",

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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.
En: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 762, 10.11.2016, p. 512-534.

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

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 - Janssen, X.

AU - Lauwers, J.

AU - Van De Klundert, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Van Spilbeeck, A.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D'Hondt, J.

AU - Daci, N.

AU - De Bruyn, I.

AU - Carrera Jarrin, E.

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

UR - https://www.scopus.com/pages/publications/84994030197

U2 - 10.1016/j.physletb.2016.10.007

DO - 10.1016/j.physletb.2016.10.007

M3 - Artículo

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

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