Article Dans Une Revue Physics Letters B Année : 2017

Cross section measurement of t-channel single top quark production in pp collisions at sqrt(s) = 13 TeV

A.M. Sirunyan , M. Besançon (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) , S. Ghosh (1) , A. Givernaud (1) , P. Gras (1) , G. Hamel De Monchenault (1) , P. Jarry (1) , I. Kucher (1) , E. Locci (1) , M. Machet (1) , J. Malcles (1) , J. Rander (1) , A. Rosowsky (1) , M. Titov (1) , A. Zghiche (1) , A. Abdulsalam (2) , I. Antropov (2) , S. Baffioni (2) , F. Beaudette (2) , P. Busson (2) , E. Chapon (2) , C. Charlot (2) , O. Davignon (2) , R. Granier de Cassagnac (2) , M. Jo (2) , S. Lisniak (2) , P. Miné (2) , M. Nguyen (2) , C. Ochando (2) , G. Ortona (2) , P. Paganini (2) , P. Pigard (2) , S. Regnard (2) , R. Salerno (2) , Y. Sirois (2) , T. Strebler (2) , Y. Yilmaz (2) , A. Zabi (2) , J.-L. Agram (3) , J. Andrea (3) , A. Aubin (3) , D. Bloch (3) , J.-M. Brom (3) , M. Buttignol (3) , E.C. Chabert (3) , N. Chanon (3) , C. Collard (3) , E. Conte (3) , X. Coubez (3) , J.-C. Fontaine (3) , D. Gelé (3) , U. Goerlach (3) , A.-C. Le Bihan (3) , K. Skovpen (3) , P. Van Hove (3) , S. Gadrat (4) , S. Beauceron (5) , C. Bernet (5) , G. Boudoul (5) , C.A. Carrillo Montoya (5) , R. Chierici (5) , D. Contardo (5) , B. Courbon (5) , P. Depasse (5) , H. El Mamouni (5) , J. Fan (5) , J. Fay (5) , S. Gascon (5) , M. Gouzevitch (5) , G. Grenier (5) , B. Ille (5) , Fabienne Lagarde (5) , I.B. Laktineh (5) , M. Lethuillier (5) , L. Mirabito (5) , A.L. Pequegnot (5) , S. Perries (5) , A. Popov (5) , D. Sabes (5) , V. Sordini (5) , M. Vander Donckt (5) , P. Verdier (5) , S. Viret (5)
A.M. Sirunyan
  • Fonction : Auteur
P. Busson
P. Paganini
T. Strebler
J.-L. Agram
E. Conte
D. Contardo

Résumé

The cross section for the production of single top quarks in the t channel is measured in proton-proton collisions at 13 TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.3 inverse-femtobarns. The event selection requires one muon and two jets where one of the jets is identified as originating from a bottom quark. Several kinematic variables are then combined into a multivariate discriminator to distinguish signal from background events. A fit to the distribution of the discriminating variable yields a total cross section of 232 +/- 13 (stat) +/- 28 (syst) pb and a ratio of top quark and top antiquark production of R[t-ch.] = $ 1.81 +/- 0.18 (stat) +/- 0.15 (syst). From the total cross section the absolute value of the CKM matrix element V[tb] is calculated to be 1.03 +/- 0.07 (exp) +/- 0.02 (theo). All results are in agreement with the standard model predictions.

Dates et versions

in2p3-01376035 , version 1 (04-10-2016)

Identifiants

Citer

A.M. Sirunyan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Cross section measurement of t-channel single top quark production in pp collisions at sqrt(s) = 13 TeV. Physics Letters B, 2017, 72, pp.752. ⟨10.1016/j.physletb.2017.07.047⟩. ⟨in2p3-01376035⟩
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