Publication
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
| dc.contributor.author | CMS collaboration (2900 authors) | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Calpas, Betty | |
| dc.contributor.author | Almeida, Nuno | |
| dc.contributor.author | Bargassa, Pedrame | |
| dc.contributor.author | David Tinoco Mendes, Andre | |
| dc.contributor.author | Faccioli, Pietro | |
| dc.contributor.author | Ferreira Parracho, Pedro Guilherme | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Ribeiro, Pedro Quinaz | |
| dc.contributor.author | Seixas, Joao | |
| dc.contributor.author | Rasteiro Da Silva, Jose | |
| dc.contributor.author | Varela, Joao | |
| dc.contributor.author | Vischia, Pietro | |
| dc.contributor.author | Lloret Iglesias, Lara | |
| dc.contributor.author | Musella, Pasquale | |
| dc.contributor.author | Rodrigues Antunes, Joao | |
| dc.contributor.author | Silva, Pedro | |
| dc.contributor.author | Pela, Joao | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.date.accessioned | 2019-02-03T20:38:23Z | |
| dc.date.available | 2019-02-03T20:38:23Z | |
| dc.date.issued | 2012-08-17 | |
| dc.date.updated | 2019-02-03T20:38:23Z | |
| dc.description.abstract | Results are presented from searches for the standard model Higgs boson in proton-proton collisions at sqrt(s) = 7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 inverse femtobarns at 7 TeV and 5.3 inverse femtobarns at 8 TeV. The search is performed in five decay modes: gamma gamma, ZZ, WW, tau tau, and b b-bar. An excess of events is observed above the expected background, with a local significance of 5.0 standard deviations, at a mass near 125 GeV, signalling the production of a new particle. The expected significance for a standard model Higgs boson of that mass is 5.8 standard deviations. The excess is most significant in the two decay modes with the best mass resolution, gamma gamma and ZZ; a fit to these signals gives a mass of 125.3 +/- 0.4 (stat.) +/- 0.5 (syst.) GeV. The decay to two photons indicates that the new particle is a boson with spin different from one. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B716 (2012) 30-61; DOI 10.1016/j.physletb.2012.08.021 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2012.08.021 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26234 | |
| dc.language.iso | eng | |
| dc.title | Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |