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

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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.

In: Journal of High Energy Physics, Vol. 2019, No. 2, 149, 01.02.2019.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{625fb757ae2f481a8af4662847d01cc6,

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.",

keywords = "Hadron-Hadron scattering (experiments), Top physics, PLUS PLUS",

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 X. Janssen and J. Lauwers and M. Pieters and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Remortel}, N. and {Abu Zeid}, S. and F. Blekman and J. D{\textquoteright}Hondt and {De Bruyn}, I. and {De Clercq}, J. and K. Deroover and A. Barnyakov and A. Ivanov",

note = "Publisher Copyright: {\textcopyright} 2019, The Author(s).",

year = "2019",

month = feb,

day = "1",

doi = "10.1007/JHEP02(2019)149",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "2",

}

RIS

TY - JOUR

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 - Janssen, X.

AU - Lauwers, J.

AU - Pieters, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D’Hondt, J.

AU - De Bruyn, I.

AU - De Clercq, J.

AU - Deroover, K.

AU - Barnyakov, A.

AU - Ivanov, A.

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.

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.

KW - Hadron-Hadron scattering (experiments)

KW - Top physics

KW - PLUS PLUS

UR - http://www.scopus.com/inward/record.url?scp=85062150316&partnerID=8YFLogxK

U2 - 10.1007/JHEP02(2019)149

DO - 10.1007/JHEP02(2019)149

M3 - Article

AN - SCOPUS:85062150316

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 2

M1 - 149

ER -

ID: 18612424