Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Accéder directement au contenu
Article Dans Une Revue Physics Letters B Année : 2012

Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV

S. Chatrchyan , D. Sillou (1) , M. Besancon (2) , S. Choudhury (2) , M. Dejardin (2) , D. Denegri (2) , B. Fabbro (2) , J.L. Faure (2) , F. Ferri (2) , S. Ganjour (2) , A. Givernaud (2) , P. Gras (2) , G. Hamel de Monchenault (2) , P. Jarry (2) , E. Locci (2) , J. Malcles (2) , L. Millischer (2) , J. Rander (2) , A. Rosowsky (2) , I. Shreyber (2) , M. Titov (2) , S. Baffioni (3) , F. Beaudette (3) , L. Benhabib (3) , L. Bianchini (3) , M. Bluj (3) , C. Broutin (3) , Pierre Busson (3) , C. Charlot (3) , N. Daci (3) , T. Dahms (3) , L. Dobrzynski (3) , S. Elgammal (3) , R. Granier de Cassagnac (3) , M. Haguenauer (3) , P. Mine (3) , C. Mironov (3) , C. Ochando (3) , P. Paganini (3) , D. Sabes (3) , R. Salerno (3) , Y. Sirois (3) , C. Thiebaux (3) , C. Veelken (3) , A. Zabi (3) , J.-L. Agram (4) , J. Andrea (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. Gele (4) , U. Goerlach (4) , P. Juillot (4) , M. Karim (4) , A.-C. Le Bihan (4) , P. van Hove (4) , F. Fassi (5) , D. Mercier (5) , C. Baty (6) , S. Beauceron (6) , N. Beaupere (6) , M. Bedjidian (6) , O. Bondu (6) , G. Boudoul (6) , D. Boumediene (6) , H. Brun (6) , J. Chasserat (6) , R. Chierici (6) , D. Contardo (6) , P. Depasse (6) , H. El Mamouni (7) , A. Falkiewicz (6) , J. Fay (6) , S. Gascon (6) , M. Gouzevitch (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) , S. Viret (6)
S. Chatrchyan
  • Fonction : Auteur
Pierre Busson
R. Granier de Cassagnac
C. Mironov
P. Paganini
C. Thiebaux
J.-L. Agram
C. Collard
E. Conte
P. van Hove
D. Contardo
H. El Mamouni
  • Fonction : Auteur
CMS
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier

Résumé

A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 inverse femtobarns. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence level is between 1.4 and 2.4 times the standard model cross section in the mass range between 110 and 150 GeV. The analysis of the data excludes, at 95% confidence level, the standard model Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The largest excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 124 GeV with a local significance of 3.1 sigma. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-150 GeV is estimated to be 1.8 sigma. More data are required to ascertain the origin of this excess.

Dates et versions

in2p3-00667603 , version 1 (08-02-2012)

Identifiants

Citer

S. Chatrchyan, D. Sillou, M. Besancon, S. Choudhury, M. Dejardin, et al.. Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV. Physics Letters B, 2012, 710, pp.403-425. ⟨10.1016/j.physletb.2012.03.003⟩. ⟨in2p3-00667603⟩
27 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More