Выдержка

Measurements of differential top quark pair t t ¯ cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an integrated luminosity of 35.9 fb −1 . The differential cross sections are presented as functions of kinematic observables of the top quarks and their decay products, the t t ¯ system, and the total number of jets in the event. The differential cross sections are defined both with particle-level objects in a fiducial phase space close to that of the detector acceptance and with parton-level top quarks in the full phase space. All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. Where possible, parton-level results are compared to calculations with beyond-NLO precision in QCD. Significant disagreement is observed between data and all predictions for several observables. The measurements are used to constrain the top quark chromomagnetic dipole moment in an effective field theory framework at NLO in QCD and to extract t t ¯ and leptonic charge asymmetries.[Figure not available: see fulltext.].

Язык оригиналаАнглийский
Номер статьи149
ЖурналJournal of High Energy Physics
Том2019
Номер выпуска2
DOI
СостояниеОпубликовано - 1 фев 2019

Отпечаток

leptons
partons
quarks
collisions
protons
quantum chromodynamics
cross sections
predictions
showers
acceptability
center of mass
dipole moments
kinematics
simulation
luminosity
asymmetry
detectors
decay
products
matrices

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Measurements of t t ¯ differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons. / The CMS collaboration.

В: Journal of High Energy Physics, Том 2019, № 2, 149, 01.02.2019.

Результат исследований: Материалы для журналаСтатья

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title = "Measurements of t t ¯ differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons",
abstract = "Measurements of differential top quark pair t t ¯ cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an integrated luminosity of 35.9 fb −1 . The differential cross sections are presented as functions of kinematic observables of the top quarks and their decay products, the t t ¯ system, and the total number of jets in the event. The differential cross sections are defined both with particle-level objects in a fiducial phase space close to that of the detector acceptance and with parton-level top quarks in the full phase space. All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. Where possible, parton-level results are compared to calculations with beyond-NLO precision in QCD. Significant disagreement is observed between data and all predictions for several observables. The measurements are used to constrain the top quark chromomagnetic dipole moment in an effective field theory framework at NLO in QCD and to extract t t ¯ and leptonic charge asymmetries.[Figure not available: see fulltext.].",
keywords = "Hadron-Hadron scattering (experiments), Top physics",
author = "{The CMS collaboration} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and M. Flechl and R. Fr{\"u}hwirth and Ghete, {V. M.} and J. Hrubec and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and A. Taurok and W. Waltenberger and J. Wittmann and Wulz, {C. E.} and M. Zarucki and V. Chekhovsky and V. Mossolov and {Suarez Gonzalez}, J. and {De Wolf}, {E. A.} and {Di Croce}, D. and V. Danilov and Kim, {J. S.} and Kim, {J. S.} and Kim, {J. S.} and M. Gavrilenko and A. Zarubin and Y. Ivanov and V. Kim and V. Oreshkin and S. Vavilov and V. Popov and A. Babaev and S. Baidali and V. Okhotnikov",
year = "2019",
month = "2",
day = "1",
doi = "10.1007/JHEP02(2019)149",
language = "English",
volume = "2019",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "2",

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T1 - Measurements of t t ¯ differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Taurok, A.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Danilov, V.

AU - Kim, J. S.

AU - Kim, J. S.

AU - Kim, J. S.

AU - Gavrilenko, M.

AU - Zarubin, A.

AU - Ivanov, Y.

AU - Kim, V.

AU - Oreshkin, V.

AU - Vavilov, S.

AU - Popov, V.

AU - Babaev, A.

AU - Baidali, S.

AU - Okhotnikov, V.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - Measurements of differential top quark pair t t ¯ cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an integrated luminosity of 35.9 fb −1 . The differential cross sections are presented as functions of kinematic observables of the top quarks and their decay products, the t t ¯ system, and the total number of jets in the event. The differential cross sections are defined both with particle-level objects in a fiducial phase space close to that of the detector acceptance and with parton-level top quarks in the full phase space. All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. Where possible, parton-level results are compared to calculations with beyond-NLO precision in QCD. Significant disagreement is observed between data and all predictions for several observables. The measurements are used to constrain the top quark chromomagnetic dipole moment in an effective field theory framework at NLO in QCD and to extract t t ¯ and leptonic charge asymmetries.[Figure not available: see fulltext.].

AB - Measurements of differential top quark pair t t ¯ cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an integrated luminosity of 35.9 fb −1 . The differential cross sections are presented as functions of kinematic observables of the top quarks and their decay products, the t t ¯ system, and the total number of jets in the event. The differential cross sections are defined both with particle-level objects in a fiducial phase space close to that of the detector acceptance and with parton-level top quarks in the full phase space. All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. Where possible, parton-level results are compared to calculations with beyond-NLO precision in QCD. Significant disagreement is observed between data and all predictions for several observables. The measurements are used to constrain the top quark chromomagnetic dipole moment in an effective field theory framework at NLO in QCD and to extract t t ¯ and leptonic charge asymmetries.[Figure not available: see fulltext.].

KW - Hadron-Hadron scattering (experiments)

KW - Top physics

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U2 - 10.1007/JHEP02(2019)149

DO - 10.1007/JHEP02(2019)149

M3 - Article

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JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

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