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Journal Articles Journal of High Energy Physics Year : 2013

Study of exclusive two-photon production of W(+)W(-) in pp collisions at sqrt(s)=7 TeV and constraints on anomalous quartic gauge couplings

S. Chatrchyan , M. Besançon (1) , S. Choudhury (1) , F. Couderc (1) , M. Dejardin (1) , D. Denegri (1) , B. Fabbro (1) , J.L. Faure (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) , L. Millischer (1) , A. Nayak (1) , J. Rander (1) , A. Rosowsky (1) , M. Titov (1) , S. Baffioni (2) , F. Beaudette (2) , L. Benhabib (2) , L. Bianchini (2) , M. Bluj (2) , Pierre Busson (2) , C. Charlot (2) , N. Daci (2) , T. Dahms (2) , M. Dalchenko (2) , L. Dobrzynski (2) , A. Florent (2) , R. Granier de Cassagnac (2) , M. Haguenauer (2) , P. Mine (2) , C. Mironov (2) , I.N. Naranjo (2) , M. Nguyen (2) , C. Ochando (2) , P. Paganini (2) , D. Sabes (2) , R. Salerno (2) , Y. Sirois (2) , C. Veelken (2) , A. Zabi (2) , J.-L. Agram (3) , J. Andrea (3) , D. Bloch (3) , D. Bodin (3) , J.-M. Brom (3) , E.C. Chabert (3) , C. Collard (3) , E. Conte (3) , F. Drouhin (3) , J.-C. Fontaine (3) , D. Gele (3) , U. Goerlach (3) , C. Goetzmann (3) , P. Juillot (3) , A.-C. Le Bihan (3) , P. van Hove (3) , S. Gadrat (4) , S. Beauceron (5) , N. Beaupere (5) , G. Boudoul (5) , S. Brochet (5) , J. Chasserat (5) , R. Chierici (5) , D. Contardo (5) , P. Depasse (5) , H. El Mamouni (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) , L. Sgandurra (5) , V. Sordini (5) , Y. Tschudi (5) , M. Vander Donckt (5) , P. Verdier (5) , S. Viret (5)
S. Chatrchyan
  • Function : Author
Pierre Busson
R. Granier de Cassagnac
C. Mironov
P. Paganini
J.-L. Agram
C. Collard
E. Conte
P. van Hove
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier

Abstract

A search for exclusive or quasi-exclusive W(+)W(-) production by photon-photon interactions, pp to p(*)W(+)W(-)p(*), at sqrt(s)=7 TeV is reported using data collected by the CMS detector with an integrated luminosity of 5.05 inverse femtobarns. Events are selected by requiring a mu(+/-)e(-/+) vertex with no additional associated charged tracks and dilepton transverse momentum pt(mu(+/-)e(-/+))>30 GeV. Two events passing all selection requirements are observed in the data, compared to a standard model expectation of 2.2+/-0.4 signal events with 0.84+/-0.15 background. The tail of the dilepton pt distribution is studied for deviations from the standard model. No events are observed with pt > 100 GeV. Model-independent upper limits are computed and compared to predictions involving anomalous quartic gauge couplings. The limits on the parameters a[W,(0,C)]/Lambda^2 with a dipole form factor and an energy cutoff Lambda(cutoff)=500 GeV are of the order of 10E-4.

Dates and versions

in2p3-00826148 , version 1 (27-05-2013)

Identifiers

Cite

S. Chatrchyan, M. Besançon, S. Choudhury, F. Couderc, M. Dejardin, et al.. Study of exclusive two-photon production of W(+)W(-) in pp collisions at sqrt(s)=7 TeV and constraints on anomalous quartic gauge couplings. Journal of High Energy Physics, 2013, 07(2013), pp.116. ⟨10.1007/JHEP07(2013)116⟩. ⟨in2p3-00826148⟩
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