Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in l+l- b b-bar final states

BELFORTE, S.; CANDELISE, VIERI; CASARSA, M.; COSSUTTI, F.; DELLA RICCA, GIUSEPPE; GOBBO, B.; LA LICATA, CHIARA; MARONE, MATTEO; SCHIZZI, ANDREA; UMER, TOMO; ZANETTI, A.

doi:10.1016/j.physletb.2015.07.010

Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into bb‾. The search is based on data from proton–proton collisions at a center-of-mass energy sqrt(s)=8 TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 fb−119.7 fb−1. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.

Titolo:	Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in l+l- b b-bar final states
Autori:	BELFORTE S. CANDELISE, VIERI CASARSA M. COSSUTTI F. DELLA RICCA, GIUSEPPE GOBBO B. LA LICATA, CHIARA MARONE, MATTEO SCHIZZI, ANDREA UMER, TOMO ZANETTI A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2015
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into bb‾. The search is based on data from proton–proton collisions at a center-of-mass energy sqrt(s)=8 TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 fb−119.7 fb−1. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.
Handle:	http://hdl.handle.net/11368/2843715
Digital Object Identifier (DOI):	10.1016/j.physletb.2015.07.010
Appare nelle tipologie:	1.1 Articolo in Rivista

File in questo prodotto:

File	Descrizione	Tipologia	Licenza
1-s2.0-S0370269315005201-main.pdf		Publisher-Version		Open Access Visualizza/Apri

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11368/2843715

Citazioni

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

ArTS Archivio della ricerca di Trieste

File in questo prodotto: