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Journal article

Evidence for CP violation in time-integrated D0→h(-)h(+) decay rates.

Abstract:
A search for time-integrated CP violation in D(0)→h(-)h(+) (h=K, π) decays is presented using 0.62 fb(-1) of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D(*+)→D(0)π(+) and D(*-)→D[over ¯](0)π(-) decay chains. The difference in CP asymmetry between D(0)→K(-)K(+) and D(0)→π(-)π(+), ΔA(CP)≡A(CP)(K(-)K(+))-A(CP)(π(-)π(+)), is measured to be [-0.82±0.21(stat)±0.11(syst)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations.
Publication status:
Published

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Journal:
Physical review letters
Volume:
108
Issue:
11
Pages:
111602
Publication date:
2012-03-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:b6504ab7-a54d-4ca3-bcd0-7646d24403f1
Source identifiers:
244812
Local pid:
pubs:244812
Language:
English
Keywords:

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