Article Dans Une Revue Physics Letters B Année : 2011

First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at sqrt(s)=7 TeV

D. Sillou (1) , M. Besancon (2) , M. Dejardin (2) , D. Denegri (2) , B. Fabbro (2) , J.L. Faure (2) , F. Ferri (2) , S. Ganjour (2) , F.X. Gentit (2) , A. Givernaud (2) , P. Gras (2) , G. Hamel de Monchenault (2) , P. Jarry (2) , E. Locci (2) , J. Malcles (2) , M. Marionneau (2) , L. Millischer (2) , J. Rander (2) , A. Rosowsky (2) , M. Titov (2) , P. Verrecchia (2) , S. Baffioni (3) , L. Bianchini (3) , M. Bluj (3) , C. Broutin (3) , Pierre Busson (3) , C. Charlot (3) , L. Dobrzynski (3) , R. Granier de Cassagnac (3) , M. Haguenauer (3) , P. Miné (3) , C. Mironov (3) , C. Ochando (3) , P. Paganini (3) , D. Sabes (3) , R. Salerno (3) , Y. Sirois (3) , C. Thiebaux (3) , B. Wyslouch (3) , A. Zabi (3) , J.-L. Agram (4) , J. Andrea (4) , A. Besson (4) , D. Bloch (4) , D. Bodin (4) , J.-M. Brom (4) , M. Cardaci (4) , E.C. Chabert (4) , C. Collard (4) , E. Conte (4) , F. Drouhin (4) , C. Ferro (4) , J.-C. Fontaine (4) , D. Gelé (4) , U. Goerlach (4) , S. Greder (4) , P. Juillot (4) , M. Karim (4) , A.-C. Le Bihan (4) , Y. Mikami (4) , P. van Hove (4) , F. Fassi (5) , D. Mercier (5) , C. Baty (6) , N. Beaupere (6) , M. Bedjidian (6) , O. Bondu (6) , G. Boudoul (6) , D. Boumediene (6) , H. Brun (6) , N. Chanon (6) , R. Chierici (6) , D. Contardo (6) , P. Depasse (6) , H. El Mamouni (7) , A. Falkiewicz (6) , J. Fay (6) , S. Gascon (6) , B. Ille (6) , T. Kurca (6) , T. Le Grand (6) , M. Lethuillier (6) , L. Mirabito (6) , S. Perries (6) , V. Sordini (6) , S. Tosi (6) , Y. Tschudi (6) , P. Verdier (6) , H. Xiao (6)
Pierre Busson
C. Mironov
P. Paganini
J.-L. Agram
E. Conte
D. Contardo
H. El Mamouni
  • Fonction : Auteur

Résumé

The first measurement of the cross section for top-quark pair production in pp collisions at the LHC at center-of-mass energy sqrt(s)= 7 TeV has been performed using 3.1 {\pm} 0.3 inverse pb of data recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from Drell-Yan and non-W/Z boson production are estimated from data. Eleven events are observed in the data with 2.1 {\pm} 1.0 events expected from background. The measured cross section is 194 {\pm} 72 (stat.) {\pm} 24 (syst.) {\pm} 21 (lumi.) pb, consistent with next-to-leading order predictions.

Dates et versions

in2p3-00534081 , version 1 (08-11-2010)

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Citer

D. Sillou, M. Besancon, M. Dejardin, D. Denegri, B. Fabbro, et al.. First Measurement of the Cross Section for Top-Quark Pair Production in Proton-Proton Collisions at sqrt(s)=7 TeV. Physics Letters B, 2011, 695, pp.424-443. ⟨10.1016/j.physletb.2010.11.058⟩. ⟨in2p3-00534081⟩
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