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Article Dans Une Revue Journal of High Energy Physics Année : 2015

Measurement of the Z gamma production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings

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) , E. Chapon (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) , I.N. Naranjo (2) , M. Nguyen (2) , C. Ochando (2) , G. Ortona (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 (3) , D. Gele (3) , U. Goerlach (3) , C. Goetzmann (3) , A.-C. Le Bihan (3) , K. Skovpen (3) , P. Van Hove (3) , S. Gadrat (4) , S. Beauceron (5) , N. Beaupere (5) , C. Bernet (5) , G. Boudoul (5) , E. Bouvier (5) , S. Brochet (5) , C.A. Carrillo Montoya (5) , J. Chasserat (5) , R. Chierici (5) , D. Contardo (5) , P. Depasse (5) , H. El Mamouni (5) , J. Fan (5) , J. Fay (5) , S. Gascon (5) , M. Gouzevitch (5) , B. Ille (5) , T. Kurca (5) , M. Lethuillier (5) , L. Mirabito (5) , S. Perries (5) , J.D. Ruiz Alvarez (5) , D. Sabes (2) , L. Sgandurra (5) , V. Sordini (5) , M. Vander Donckt (5) , P. Verdier (5) , S. Viret (5) , H. Xiao (5)
V. Khachatryan
  • Fonction : Auteur
P. Busson
R. Granier De Cassagnac
P. Paganini
J.-L. Agram
C. Collard
E. Conte
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier
S. Viret

Résumé

The cross section for the production of Z gamma in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 inverse femtobarns. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. The differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. The observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. Limits on anomalous triple gauge couplings of Z Z gamma and Z gamma gamma are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.

Dates et versions

in2p3-01123825 , version 1 (05-03-2015)

Identifiants

Citer

V. Khachatryan, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurement of the Z gamma production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings. Journal of High Energy Physics, 2015, 2015(04), pp.164. ⟨10.1007/JHEP04(2015)164⟩. ⟨in2p3-01123825⟩
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