A measurement of the ratio of the branching fractions of the Bs0 meson to J/ψf0(980) and to J/ψφ(1020) is presented. The J/ψ, f0(980), and φ(1020) are observed through their decays to μ+μ-, π+π-, and K+K-, respectively. The f0 and the φ are identified by requiring |Mπ+π--974 MeV|<50 MeV and |MK+K--1020 MeV|<10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3 fb-1. The measured ratio is B(Bs0→J/ψf0)B(f0→π+π-)/B(Bs0→J/ψφ)B(φ→K+K-) = 0.140±0.008(stat) ± 0.023(syst), where the first uncertainty is statistical and the second is systematic.

Measurement of the ratio B(Bs0 → J/ψf0(980))/B(Bs0 → J/ψφ(1020)) in pp collisions at √s=7 TeV

PAGANO, Davide;
2016-01-01

Abstract

A measurement of the ratio of the branching fractions of the Bs0 meson to J/ψf0(980) and to J/ψφ(1020) is presented. The J/ψ, f0(980), and φ(1020) are observed through their decays to μ+μ-, π+π-, and K+K-, respectively. The f0 and the φ are identified by requiring |Mπ+π--974 MeV|<50 MeV and |MK+K--1020 MeV|<10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3 fb-1. The measured ratio is B(Bs0→J/ψf0)B(f0→π+π-)/B(Bs0→J/ψφ)B(φ→K+K-) = 0.140±0.008(stat) ± 0.023(syst), where the first uncertainty is statistical and the second is systematic.
2016
Esperti anonimi
Inglese
Internazionale
ELETTRONICO
756
84
102
19
Nuclear and High Energy Physics
http://www.sciencedirect.com/science/journal/03702693
2144
info:eu-repo/semantics/article
262
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; H...espandi
1 Contributo su Rivista::1.1 Articolo in rivista
none
File in 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/11379/481334
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 5
social impact