paper

First study of the CP-violating phase and decay-width difference in $B_{s}^{0} \to I ¨ (2 S) I ¨ $ decays

arXiv:1608.04855 · doi:10.1016/j.physletb.2016.09.028

Abstract

A time-dependent angular analysis of $B_{s}^{0} \to I ¨ (2 S) I ¨ $ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0\invfb collected during Run 1 of the LHC. The CP-violating phase and decay-width difference of the $B_{s}^{0}$ system are measured to be $I ¨ _{s} = 0.2 3_{- 0.28}^{+ 0.29} \pm 0.02$ rad and $I^ I^_{s} = 0.06 6_{- 0.044}^{+ 0.041} \pm 0.007$ ps $^{- 1}$ , respectively, where the first uncertainty is statistical and the second systematic. This is the first time that $I ¨ _{s}$ and $I^ I^_{s}$ have been measured in a decay containing the $I ¨ (2 S)$ resonance.

All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-027.html

First study of the CP-violating phase and decay-width difference in Bs0​→I¨(2S)I¨ decays

Abstract

First study of the CP-violating phase and decay-width difference in $B_{s}^{0} \to I ¨ (2 S) I ¨ $ decays