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Evidence for a narrow near-threshold structure in the J/psivarphi mass spectrum in B;{+} --> J/psivarphiK;{+} decays.

Abstract:

Evidence is reported for a narrow structure near the J/psivarphi threshold in exclusive B;{+} --> J/psivarphiK;{+} decays produced in p[over]p collisions at sqrt[s] = 1.96 TeV. A signal of 14 +/- 5 events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of 2.7 fb;{-1}, collected by the CDF II detector. The mass and natural width of the structure are measured to be 4143.0 +/- 2.9(stat) +/- 1.2(syst) M...

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Publication status:
Published

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Journal:
Physical Review Letters More from this journal
Volume:
102
Issue:
24
Pages:
242002
Publication date:
2009-06-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Language:
English
Keywords:
Pubs id:
pubs:2262
UUID:
uuid:63d20633-86b8-46c0-a7a2-923c11bec3e6
Local pid:
pubs:2262
Source identifiers:
2262
Deposit date:
2012-12-19

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