Abstract

A measurement of the Bs→J/ψϕ decay parameters, updated to include flavour tagging is reported using 4.9fb−1 of integrated luminosity collected by the ATLAS detector from sqrt(s)=7TeV pp collisions recorded in 2011 at the LHC. The values measured for the physical parameters are: ϕsΔΓΓs|A∥(0)|2|A0(0)|2δ⊥=0.12±0.25(stat.)±0.05(syst.)rad0.053±0.021(stat.)0.010(syst.)ps−10.677±0.007(stat.)±0.004(syst.)ps−10.220±0.008(stat.)±0.009(syst.)0.529±0.006(stat.)±0.012(syst.)3.89±0.47(stat.)±0.11(syst.)rad where the parameter ΔΓ is constrained to be positive. The S-wave contribution was measured and found to be compatible with zero. Results for ϕs and ΔΓ are also presented as 68% and 95% likelihood contours, which show agreement with the Standard Model expectations.

Autore Pugliese

• Spagnolo Stefania Antonia , Ventura Andrea , Gorini Edoardo

Tutti gli autori

• G. AAD , G. CHIODINI , E. GORINI , M. PRIMAVERA , S. SPAGNOLO , A. VENTURA , ET AL.

Titolo volume/Rivista

PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY

Anno di pubblicazione

2014

ISSN

1550-7998

ISBN

Non Disponibile

Numero di citazioni Wos

10

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

25

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile