In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2013, No. 10 ( 2013-10)
Abstract:
Direct and mixing-induced CP -violating asymmetries in $ B_s^0\to {K^{+}}{K^{-}} $ decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb −1 , collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The results are C KK = 0 . 14 ± 0 . 11 ± 0 . 03 and S KK = 0 . 30 ± 0 . 12 ± 0 . 04, where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B 0 → π + π − decays to be C ππ = −0 . 38 ± 0 . 15 ± 0 . 02 and S ππ = −0 . 71 ± 0 . 13 ± 0 . 02, in good agreement with existing measurements.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP10(2013)183
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2013
detail.hit.zdb_id:
2027350-2