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Observation of Y(3940) --> J/psiomega in B --> J/psiomegaK at BABAR.

Abstract:
We present a study of the decays B;{0,+}-->J/psiomegaK;{0,+} using 383x10;{6} BB[over ] events obtained with the BABAR detector at PEP-II. We observe Y(3940)-->J/psiomega, with mass 3914.6_{-3.4};{+3.8}(stat)+/-2.0(syst) MeV/c;{2}, and width 34_{-8};{+12}(stat)+/-5(syst) MeV. The ratio of B0 and B+ decay to YK is 0.27_{-0.23};{+0.28}(stat)-0.01+0.04(syst), and the relevant B0 and B+ branching fractions are reported.
Publication status:
Published

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Journal:
Physical review letters
Volume:
101
Issue:
8
Pages:
082001
Publication date:
2008-08-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:218712c9-57ce-49ac-ae03-2e4a949bbd8e
Source identifiers:
211276
Local pid:
pubs:211276
Language:
English
Keywords:

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