TY - JOUR

T1 - Measurement of the t t ¯ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at √s=13Te

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 - Del Valle, A. Escalante

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 - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Gonzalez, J. Suarez

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, J.

AU - Lelek, A.

AU - Pieters, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Zeid, S. Abu

AU - Blekman, F.

AU - D’Hondt, J.

AU - De Clercq, J.

AU - Deroover, K.

AU - Barnyakov, A.

AU - Dimova, T.

AU - Kardapoltsev, L.

AU - Блинов, Владимир Евгеньевич

AU - Сковпень, Юрий Иванович

N1 - Publisher Copyright: © 2019, CERN for the benefit of the CMS collaboration.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - A measurement of the top quark–antiquark pair production cross section σ t t ¯ in proton–proton collisions at a centre-of-mass energy of 13Te is presented. The data correspond to an integrated luminosity of 35.9fb-1, recorded by the CMS experiment at the CERN LHC in 2016. Dilepton events (e ± μ ∓ , μ + μ - , e + e - ) are selected and the cross section is measured from a likelihood fit. For a top quark mass parameter in the simulation of mtMC=172.5Ge the fit yields a measured cross section σtt¯=803±2(stat)±25(syst)±20(lumi)pb, in agreement with the expectation from the standard model calculation at next-to-next-to-leading order. A simultaneous fit of the cross section and the top quark mass parameter in the powheg simulation is performed. The measured value of mtMC=172.33±0.14(stat)-0.72+0.66(syst)Ge is in good agreement with previous measurements. The resulting cross section is used, together with the theoretical prediction, to determine the top quark mass and to extract a value of the strong coupling constant with different sets of parton distribution functions.

AB - A measurement of the top quark–antiquark pair production cross section σ t t ¯ in proton–proton collisions at a centre-of-mass energy of 13Te is presented. The data correspond to an integrated luminosity of 35.9fb-1, recorded by the CMS experiment at the CERN LHC in 2016. Dilepton events (e ± μ ∓ , μ + μ - , e + e - ) are selected and the cross section is measured from a likelihood fit. For a top quark mass parameter in the simulation of mtMC=172.5Ge the fit yields a measured cross section σtt¯=803±2(stat)±25(syst)±20(lumi)pb, in agreement with the expectation from the standard model calculation at next-to-next-to-leading order. A simultaneous fit of the cross section and the top quark mass parameter in the powheg simulation is performed. The measured value of mtMC=172.33±0.14(stat)-0.72+0.66(syst)Ge is in good agreement with previous measurements. The resulting cross section is used, together with the theoretical prediction, to determine the top quark mass and to extract a value of the strong coupling constant with different sets of parton distribution functions.

KW - DISTRIBUTIONS

UR - http://www.scopus.com/inward/record.url?scp=85065028824&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-019-6863-8

DO - 10.1140/epjc/s10052-019-6863-8

M3 - Article

C2 - 31148943

AN - SCOPUS:85065028824

VL - 79

SP - 368

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 5

M1 - 368

ER -