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Article Dans Une Revue European Physical Journal C: Particles and Fields Année : 2015

Measurement of the differential cross section for top quark pair production in pp collisions at sqrt(s) = 8 TeV

V. Khachatryan , M. Besancon (1) , F. Couderc (1) , M. Dejardin (1) , D. Denegri (1) , B. Fabbro (1) , J.L. Faure (1) , C. Favaro (1) , F. Ferri (1) , S. Ganjour (1) , A. Givernaud (1) , P. Gras (1) , G. Hamel De Monchenault (1) , P. Jarry (1) , E. Locci (1) , J. Malcles (1) , J. Rander (1) , A. Rosowsky (1) , M. Titov (1) , S. Baffioni (2) , F. Beaudette (2) , P. Busson (2) , C. Charlot (2) , T. Dahms (2) , M. Dalchenko (2) , L. Dobrzynski (2) , N. Filipovic (2) , A. Florent (2) , R. Granier De Cassagnac (2) , L. Mastrolorenzo (2) , P. Mine (2) , C. Mironov (2) , I.N. Naranjo (2) , M. Nguyen , C. Ochando (2) , P. Paganini (2) , S. Regnard (2) , R. Salerno (2) , J.B. Sauvan (2) , Y. Sirois (2) , C. Veelken (2) , Y. Yilmaz (2) , A. Zabi (2) , J.-L. Agram (3) , J. Andrea (3) , A. Aubin (3) , D. Bloch (3) , J.-M. Brom (3) , E.C. Chabert (3) , C. Collard (3) , E. Conte (3) , J.-C. Fontaine , D. Gele (3) , U. Goerlach (3) , C. Goetzmann (3) , A.-C. Le Bihan (3) , P. Van Hove (3) , S. Gadrat , S. Beauceron (4) , N. Beaupere (4) , G. Boudoul (4) , E. Bouvier (4) , S. Brochet (4) , C.A. Carrillo Montoya (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) , D. Sabes (4) , L. Sgandurra (4) , V. Sordini (4) , M. Vander Donckt (4) , P. Verdier (4) , S. Viret (4) , H. Xiao (4)
V. Khachatryan
  • Fonction : Auteur
P. Busson
R. Granier De Cassagnac
C. Mironov
M. Nguyen
  • Fonction : Auteur
P. Paganini
J.-L. Agram
C. Collard
E. Conte
J.-C. Fontaine
  • Fonction : Auteur
S. Gadrat
  • Fonction : Auteur
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier
S. Viret

Résumé

The normalized differential cross section for top quark pair (ttbar) production is measured in pp collisions at a centre-of-mass energy of 8 TeV at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7 inverse femtobarns. The measurements are performed in the lepton+jets (e/mu+jets) and in the dilepton (e e, mu mu, and e mu) decay channels. The ttbar cross section is measured as a function of the kinematic properties of the charged leptons, the jets associated to b quarks, the top quarks, and the ttbar system. The data are compared with several predictions from perturbative QCD up to approximate next-to-next-to-leading-order precision. No significant deviations are observed relative to the standard model predictions.

Dates et versions

in2p3-01153175 , version 1 (19-05-2015)

Identifiants

Citer

V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurement of the differential cross section for top quark pair production in pp collisions at sqrt(s) = 8 TeV. European Physical Journal C: Particles and Fields, 2015, 75, pp.542. ⟨10.1140/epjc/s10052-015-3709-x⟩. ⟨in2p3-01153175⟩
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