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Measurement of the ratio of branching fractions B(B±→J/ ψπ±)/B(B±→J/ψK±)

Abstract:

We report a measurement of the ratio of branching fractions of the decays B±→J/ψπ± and B±→J/ψK± using the CDF II detector at the Fermilab Tevatron Collider. The signal from the Cabbibo-suppressed B±→J/ψπ± decay is separated from B±→J/ψK± using the B±→J/ψK± invariant mass distribution and the kinematical differences of the hadron track in the two decay modes. From a sample of 220pb-1 of pp̄ collisions at s=1.96TeV, we observe 91±15 B±→J/ψπ± events together with 1883±34 B±→J/ψK± events. The rat...

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Publisher copy:
10.1103/PhysRevD.79.112003

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Journal:
Physical Review D More from this journal
Volume:
79
Issue:
11
Publication date:
2009-06-10
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
Language:
English
Pubs id:
pubs:117352
UUID:
uuid:0b62fc0b-e76c-4246-a675-34622281d4e6
Local pid:
pubs:117352
Source identifiers:
117352
Deposit date:
2012-12-19

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