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Study of the B- -> J/psi K-pi(+)pi(-) decay and measurement of the B- -> X(3872)K- branching fraction

Abstract:

We study the decay B- → J/ΨK -π+π- using 117×106 BB̄ events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. We measure the branching fractions ℬ (B- → J/ΨK -π+π-) = (116±7(stat.) ±9(syst.))×10-5 and ℬ (B- → X(3872)K-) × ℬ (X(3872) → J/Ψπ+π -) = (1.28±0.41)×10-5 and find the mass of the X(3872) to be 3873.4±1.4 MeV/c2. We search for the h c narrow state in the decay B- → hcK -, hc → J/Ψπ+π- and for the decay B- → J/ΨD0π-, with D0 → K-...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.71.071103

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Journal:
PHYSICAL REVIEW D
Volume:
71
Issue:
7
Pages:
1-7
Publication date:
2005-04-05
DOI:
EISSN:
1550-2368
ISSN:
0556-2821
URN:
uuid:cbe0db79-1772-4a19-97c0-e2c61dfe33ec
Source identifiers:
6941
Local pid:
pubs:6941
Language:
English

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