Results are presented from searches for the standard model Higgs boson in proton-proton collisions at root 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 fb(-1) at 7 TeV and 5.3 fb(-1) at 8 TeV. The search is performed in five decay modes: gamma gamma, ZZ, W+W-, tau(+)tau(-), and b (b) over 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. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC / S., C., V., K., A. M., S., A., T., W., A., E., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., J., H., M., H., N., H., J., H., M., J., W., K., V., K., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 716:1(2012), pp. 30-61. [10.1016/j.physletb.2012.08.021]

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

BARONE, Luciano Maria;DEL RE, Daniele;LONGO, Egidio;MICHELI, FRANCESCO;ORGANTINI, Giovanni;PARAMATTI, Riccardo;RAHATLOU, SHAHRAM;SOFFI, LIVIA;SANTANASTASIO, FRANCESCO;TRACZYK, PIOTR WOJCIECH;
2012

Abstract

Results are presented from searches for the standard model Higgs boson in proton-proton collisions at root 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 fb(-1) at 7 TeV and 5.3 fb(-1) at 8 TeV. The search is performed in five decay modes: gamma gamma, ZZ, W+W-, tau(+)tau(-), and b (b) over 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. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
2012
cms; higgs; physics
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC / S., C., V., K., A. M., S., A., T., W., A., E., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., J., H., M., H., N., H., J., H., M., J., W., K., V., K., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 716:1(2012), pp. 30-61. [10.1016/j.physletb.2012.08.021]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/491436
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9164
  • ???jsp.display-item.citation.isi??? 4477
social impact