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Bounds on the CP asymmetry in b --> sgamma decays.

Abstract:
We have measured the CP asymmetry A(CP) identical with[gamma(b-->sgamma)-gammab-->sgamma)]/[gamma(b-->sgamma)+gamma(b-->sgamma)] to be A(CP) = (-0.079+/-0.108+/-0.022) (1.0+/-0.030), implying that, at 90% confidence level, A(CP) lies between -0.27 and +0.10. These limits rule out some extreme non-standard-model predictions, but are consistent with most, as well as with the standard model.
Publication status:
Published

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Publisher copy:
10.1103/physrevlett.86.5661

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Journal:
Physical Review Letters More from this journal
Volume:
86
Issue:
25
Pages:
5661-5665
Publication date:
2001-06-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Pubs id:
pubs:4375
UUID:
uuid:88e5c91e-d2ee-493a-971f-41545b247ac6
Local pid:
pubs:4375
Source identifiers:
4375
Deposit date:
2012-12-19

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