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Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s)=8 TeV

S. Chatrchyan S. Baffioni 1 F. Beaudette 1 P. Busson 1 C. Charlot 1 N. Daci 1 T. Dahms 1 M. Dalchenko 1 L. Dobrzynski 1 A. Florent 1 R. Granier de Cassagnac 1 P. Mine 1 C. Mironov 1 I.N. Naranjo 1 M. Nguyen 1 C. Ochando 1 P. Paganini 1 D. Sabes 1 R. Salerno 1 Y. Sirois 1 C. Veelken 1 Y. Yilmaz 1 A. Zabi 1 J.-L. Agram 2 J. Andrea 2 D. Bloch 2 J.-M. Brom 2 E.C. Chabert 2 C. Collard 2 E. Conte 2 F. Drouhin 2 J.-C. Fontaine 2 D. Gele 2 U. Goerlach 2 C. Goetzmann 2 P. Juillot 2 A.-C. Le Bihan 2 P. van Hove 2 S. Gadrat 3 S. Beauceron 4 N. Beaupere 4 G. Boudoul 4 S. Brochet 4 J. Chasserat 4 R. Chierici 4 D. Contardo 4 P. Depasse 4 H. El Mamouni 4 J. Fan 4 J. Fay 4 S. Gascon 4 M. Gouzevitch 4 B. Ille 4 T. Kurca 4 M. Lethuillier 4 L. Mirabito 4 S. Perries 4 J.D. Ruiz Alvarez 4 L. Sgandurra 4 V. Sordini 4 M. Vander Donckt 4 P. Verdier 4 S. Viret 4 H. Xiao 4 M. Besançon 5 F. Couderc 5 M. Dejardin 5 D. Denegri 5 B. Fabbro 5 J.L. Faure 5 F. Ferri 5 S. Ganjour 5 A. Givernaud 5 P. Gras 5 G. Hamel De Monchenault 5 P. Jarry 5 E. Locci 5 J. Malcles 5 A. Nayak 5 J. Rander 5 A. Rosowsky 5 M. Titov 5 
Abstract : The top-antitop quark (t t-bar) production cross section is measured in proton-proton collisions at sqrt(s)=8 TeV with the CMS experiment at the LHC, using a data sample corresponding to an integrated luminosity of 5.3 inverse femtobarns. The measurement is performed by analysing events with a pair of electrons or muons, or one electron and one muon, and at least two jets, one of which is identified as originating from hadronisation of a bottom quark. The measured cross section is 239 +/- 2 (stat.) +/- 11 (syst.) +/- 6 (lum.) pb, for an assumed top-quark mass of 172.5 GeV, in agreement with the prediction of the standard model.
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Submitted on : Wednesday, January 8, 2014 - 10:29:52 AM
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S. Chatrchyan, S. Baffioni, F. Beaudette, P. Busson, C. Charlot, et al.. Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s)=8 TeV. Journal of High Energy Physics, Springer, 2014, 2014(02), pp.024. ⟨10.1007/JHEP02(2014)024⟩. ⟨in2p3-00925473⟩

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