Bibcode
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Strauss, J.; Treberertreberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; de Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; van de Klundert, M.; van Haevermaet, H.; van Mechelen, P.; van Remortel, N.; van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; de Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; van Doninck, W.; van Mulders, P.; van Parijs, I.; Brun, H.; Caillol, C.; Clerbaux, B.; de Lentdecker, G.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Randle-Conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M.; McCartin, J.; Ocampo Rios, A. A.; Poyraz, D.; Ryckbosch, D.; Salva, S.; Schöfbeck, R.; Sigamani, M. et al.
Referencia bibliográfica
Journal of High Energy Physics, Volume 2016, Issue 8, article id. #29, 54 pp.
Fecha de publicación:
8
2016
Número de citas
37
Número de citas referidas
35
Descripción
The inclusive cross section for top quark pair production is measured in
proton-proton collisions at √{s}=7 and 8 TeV, corresponding to 5.0
and 19.7 fb-1, respectively, with the CMS experiment at the
LHC. The cross sections are measured in the electron-muon channel using
a binned likelihood fit to multi-differential final state distributions
related to identified b quark jets and other jets in the event. The
measured cross section values are 173.6 ± 2.1(stat) -
4.0 + 4.5 (syst) ± 3.8(lumi)pb at √{s}=7
TeV, and 244.9 ± 1.4(stat) - 5.5 + 6.3
(syst) ± 6.4(lumi)pb at √{s}=8 TeV, in good agreement with
QCD calculations at next-to-next-to-leading-order accuracy. The ratio of
the cross sections measured at 7 and 8 TeV is determined, as well as
cross sections in the fiducial regions defined by the acceptance
requirements on the two charged leptons in the final state. The cross
section results are used to determine the top quark pole mass via the
dependence of the theoretically predicted cross section on the mass,
giving a best result of 173. 8 - 1.8 + 1.7 GeV.
The data at √{s}=8 TeV are also used to set limits, for two
neutralino mass values, on the pair production of supersymmetric
partners of the top quark with masses close to the top quark mass.
[Figure not available: see fulltext.]