Study of Direct CP Violation in B(±)→J/ψK(±)(π(±)) Decays
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Issue Date
2008-05-30Author
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
We present a search for direct CP violation in B(±)→J/ψK(±)(π(±)) decays. The event sample is selected from 2.8 fb(−1) of pp-bar collisions recorded by D0 experiment in run II of the Fermilab Tevatron Collider. The charge asymmetry ACP(B(+)→J/ψK(+))=+0.0075±0.0061(stat)±0.0030(syst) is obtained using a sample of approximately 40 000 B(±)→J/ψK(±) decays. The achieved precision is of the same level as the expected deviation predicted by some extensions of the standard model. We also measured the charge asymmetry ACP(B(+)→J/ψπ(+))=−0.09±0.08(stat)±0.03(syst).
Description
This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.211802.
ISSN
0031-9007Collections
Citation
V. M. Abazov et al. (D0 Collaboration). (2008). "Study of Direct CP Violation in B(±)→J/ψK(±)(π(±)) Decays." Physical Review Letters, 100(21):211802. http://dx.doi.org/10.1103/PhysRevLett.100.211802
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