Search for the standard model Higgs boson produced in association with W and Z bosons in pp collisions at sqrt(s)=7 TeV

S. Chatrchyan M. Besancon 1 S. Choudhury 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 I. Shreyber 1 M. Titov 1 S. Baffioni 2 F. Beaudette 2 L. Benhabib 2 L. Bianchini 2 M. Bluj 2 C. Broutin 2 Pierre Busson 2 C. Charlot 2 N. Daci 2 T. Dahms 2 L. Dobrzynski 2 R. Granier de Cassagnac 2 M. Haguenauer 2 P. Mine 2 C. Mironov 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 M. Cardaci 3 E.C. Chabert 3 C. Collard 3 E. Conte 3 F. Drouhin 3 C. Ferro 3 J.-C. Fontaine 3 D. Gele 3 U. Goerlach 3 P. Juillot 3 A.-C. Le Bihan 3 P. Van Hove 3 F. Fassi 4 D. Mercier 4 S. Beauceron 5 N. Beaupere 5 O. Bondu 5 G. Boudoul 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 V. Sordini 5 Y. Tschudi 5 P. Verdier 5 S. Viret 5
1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 LLR - Laboratoire Leprince-Ringuet
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 CC-IN2P3 - Centre de Calcul de l'IN2P3
5 IPNL - Institut de Physique Nucléaire de Lyon
Abstract : A search for the Higgs boson produced in association with a W or Z boson in proton-proton collisions at a center-of-mass energy of 7 TeV is performed with the CMS detector at the LHC using the full 2011 data sample, from an integrated luminosity of 5 inverse femtobarns. Higgs boson decay modes to tau tau and WW are explored by selecting events with three or four leptons in the final state. No excess above the standard model expectation is observed, resulting in exclusion limits on the product of Higgs associated production cross section and decay branching fraction for Higgs boson masses between 110 and 200 GeV in these channels. Combining these results with other CMS associated production searches using the same dataset in the H to gamma gamma and H to b b-bar decay modes, the cross section for associated Higgs boson production 3.3 times the standard model expectation or larger is ruled out at the 95% confidence level for a Higgs boson mass of 125 GeV.
Type de document :
Article dans une revue
Journal of High Energy Physics, Springer, 2012, 11(2012), pp.088. 〈10.1007/JHEP11(2012)088〉
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http://hal.in2p3.fr/in2p3-00733600
Contributeur : Sylvie Flores <>
Soumis le : mercredi 19 septembre 2012 - 09:25:32
Dernière modification le : jeudi 9 février 2017 - 15:14:05

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S. Chatrchyan, M. Besancon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for the standard model Higgs boson produced in association with W and Z bosons in pp collisions at sqrt(s)=7 TeV. Journal of High Energy Physics, Springer, 2012, 11(2012), pp.088. 〈10.1007/JHEP11(2012)088〉. 〈in2p3-00733600〉

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