Measurement of the jet mass in highly boosted t t ¯ events from pp collisions at √s=8TeV

CMS Collaboration

doi:10.1140/epjc/s10052-017-5030-3

Measurement of the jet mass in highly boosted t t ¯ events from 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
Université catholique de Louvain
Institut Pluridisciplinaire Hubert Curien
Université de Mons
Centro Brasileiro de Pesquisas Físicas
Universidade do Estado do Rio de Janeiro
Universidade Estadual de Campinas
Universidade Federal de Pelotas
Universidade Estadual Paulista Júlio de Mesquita Filho
Universidade Federal do ABC
Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics Chinese Academy of Science
Quaid-I-Azam University
Deutsches Elektronen-Synchrotron (DESY)
CERN
Texas Tech University
Universidad de los Andes Colombia
University of Split
Faculty of Science, University of Split
Institute Rudjer Boskovic
University of Cyprus
Charles University
Joint Institute for Nuclear Research, Dubna
Egyptian Network of High Energy Physics
Helwan University
Zewail City of Science and Technology
Fayoum University
British University
Ain Shams University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
Université Paris-Saclay
Saha Institute of Nuclear Physics
Laboratoire Leprince-Ringuet
Université de Haute-Alsace
IN2P3-CNRS
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Lomonosov Moscow State University
Georgian Technical University
Tbilisi State University
RWTH Aachen University
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Brandenburg University of Technology
Institut für Experimentelle Kernphysik
University of California at Los Angeles
NCSR Demokritos
National and Kapodistrian University of Athens
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Eötvös Loránd University
KFKI Research Institute for Particle and Nuclear Physics
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Indian Institute of Science
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Institute of Physics Bhubaneswar
Panjab University
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University of California at San Diego
Northwestern University
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
Fermi National Accelerator Laboratory
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Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

The first measurement of the jet mass m_jet of top quark jets produced in t t ¯ events from pp collisions at s=8TeV is reported for the jet with the largest transverse momentum p_T in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7fb-1. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t → b W with W → ℓν where ℓ is an electron or muon, are used to select t t ¯ events with large Lorentz boosts. The products of the fully hadronic decay t → b W with W → q q ¯ ^′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R= 1.2 , and p_T> 400 GeV. The t t ¯ cross section as a function of m_jet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the m_jet distribution is sensitive to the top quark mass m_t, and the data are used to extract a value of m_t to assess this sensitivity.

Original language	English
Article number	467
Journal	European Physical Journal C
Volume	77
Issue number	7
DOIs	https://doi.org/10.1140/epjc/s10052-017-5030-3
State	Published - 1 Jul 2017

Keywords

CMS
Physics
Top quark cross section
Top quark mass

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10.1140/epjc/s10052-017-5030-3

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@article{093c84e060dc432f9663efcc65d4fb41,

title = "Measurement of the jet mass in highly boosted t t ¯ events from pp collisions at √s=8TeV",

abstract = "The first measurement of the jet mass mjet of top quark jets produced in t t ¯ events from pp collisions at s=8TeV is reported for the jet with the largest transverse momentum pT in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7fb-1. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t → b W with W → ℓν where ℓ is an electron or muon, are used to select t t ¯ events with large Lorentz boosts. The products of the fully hadronic decay t → b W with W → q q ¯ ′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R= 1.2 , and pT> 400 GeV. The t t ¯ cross section as a function of mjet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the mjet distribution is sensitive to the top quark mass mt, and the data are used to extract a value of mt to assess this sensitivity.",

keywords = "CMS, Physics, Top quark cross section, Top quark mass",

author = "\{CMS Collaboration\} 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, \{X. 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. Waltenberger and Wulz, \{C. E.\} and O. Dvornikov and V. Makarenko and V. Mossolov and \{Suarez Gonzalez\}, J. and V. Zykunov and N. Shumeiko 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 Z Eid\}, S. and F. Blekman and J. D{\textquoteright}hondt and N. Daci and \{Carrera Jarrin\}, E.",

note = "Publisher Copyright: {\textcopyright} 2017, CERN for the benefit of the CMS collaboration.",

year = "2017",

month = jul,

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doi = "10.1140/epjc/s10052-017-5030-3",

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T1 - Measurement of the jet mass in highly boosted t t ¯ events from pp collisions at √s=8TeV

AU - CMS Collaboration

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, X. 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 - Waltenberger, W.

AU - Wulz, C. E.

AU - Dvornikov, O.

AU - Makarenko, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - Zykunov, V.

AU - Shumeiko, N.

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 Z Eid, S.

AU - Blekman, F.

AU - D’hondt, J.

AU - Daci, N.

AU - Carrera Jarrin, E.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - The first measurement of the jet mass mjet of top quark jets produced in t t ¯ events from pp collisions at s=8TeV is reported for the jet with the largest transverse momentum pT in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7fb-1. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t → b W with W → ℓν where ℓ is an electron or muon, are used to select t t ¯ events with large Lorentz boosts. The products of the fully hadronic decay t → b W with W → q q ¯ ′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R= 1.2 , and pT> 400 GeV. The t t ¯ cross section as a function of mjet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the mjet distribution is sensitive to the top quark mass mt, and the data are used to extract a value of mt to assess this sensitivity.

AB - The first measurement of the jet mass mjet of top quark jets produced in t t ¯ events from pp collisions at s=8TeV is reported for the jet with the largest transverse momentum pT in highly boosted hadronic top quark decays. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 19.7fb-1. The measurement is performed in the lepton+jets channel in which the products of the semileptonic decay t → b W with W → ℓν where ℓ is an electron or muon, are used to select t t ¯ events with large Lorentz boosts. The products of the fully hadronic decay t → b W with W → q q ¯ ′ are reconstructed using a single Cambridge–Aachen jet with distance parameter R= 1.2 , and pT> 400 GeV. The t t ¯ cross section as a function of mjet is unfolded at the particle level and is used to test the modelling of highly boosted top quark production. The peak position of the mjet distribution is sensitive to the top quark mass mt, and the data are used to extract a value of mt to assess this sensitivity.

KW - CMS

KW - Physics

KW - Top quark cross section

KW - Top quark mass

UR - https://www.scopus.com/pages/publications/85025124421

U2 - 10.1140/epjc/s10052-017-5030-3

DO - 10.1140/epjc/s10052-017-5030-3

M3 - Artículo

AN - SCOPUS:85025124421

SN - 1434-6044

VL - 77

JO - European Physical Journal C

JF - European Physical Journal C

IS - 7

M1 - 467

ER -

Measurement of the jet mass in highly boosted t t ¯ events from pp collisions at √s=8TeV

Abstract

Keywords

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