Journal article

### First measurement of time-dependent CP violation in B0 → K+K- decays

Abstract:

Direct and mixing-induced CP-violating asymmetries in B0 s → 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 7TeV. The results are CKK = 0.14 ± 0.11 ± 0.03 and SKK = 0.30 ± 0.12 ± 0.04, where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B0→π +π- decays to be Cππ = -0.38...

### Access Document

Publisher copy:
10.1007/JHEP10(2013)183

### Authors

Journal:
Journal of High Energy Physics
Volume:
2013
Issue:
10
Publication date:
2013-01-01
DOI:
EISSN:
1029-8479
ISSN:
1126-6708
Source identifiers:
462368
Pubs id:
pubs:462368
UUID:
uuid:6f7240f7-537b-4d9d-906f-a29a2fba04ed
Local pid:
pubs:462368
Deposit date:
2014-08-20