Study of B[superscript ±]→J/ψπ[superscript ±] and B[superscript ±]→J/ψK[superscript ±] Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation
Author(s)
Sciolla, Gabriella; Yamamoto, R. K.; Cowan, Ray F; Taylor, Frank E
DownloadAubert-2004-Study of B.pdf (162.8Kb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Alternative title
Study of B±→J/ψπ± and B±→J/ψK± Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation
Terms of use
Metadata
Show full item recordAbstract
We study B[superscript ±]→J/ψπ[superscript ±] and B[superscript ±]→J/ψK[superscript ±] decays in a sample of about 89×10[superscript 6] BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We observe a signal of 244±20 B[superscript ±]→J/ψπ[superscript ±] events and determine the ratio B(B[superscript ±]→J/ψπ[superscript ±])/B(B[superscript ±]→J/ψK±) to be [5.37±0.45(stat)±0.11(syst)]%. The charge asymmetries for the B[superscript ±]→J/ψπ[superscript ±] and B[superscript ±]→J/ψ[superscript ±] decays are determined to be A[subscript π]=0.123±0.085(stat)±0.004(syst) and A[subscript K]=0.030±0.015(stat)±0.006(syst), respectively.
Date issued
2004-06Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Aubert, B. et al. “Study of B±→J/ψπ± and B±→J/ψK± Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation.” Physical Review Letters 92.24 (2004): Web. 18 May 2012. © 2004 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114