Abazov, V. M. ; Mondal, N. K. ; et., al (2008) Study of direct CP violation in B±→J/ψK±(π±) decays Physical Review Letters, 100 (21). 211802_1-211802_7. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v100/i21/e211802
Related URL: http://dx.doi.org/10.1103/PhysRevLett.100.211802
Abstract
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‾ 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).
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 66895 |
| Deposited On: | 28 Oct 2011 03:54 |
| Last Modified: | 28 Oct 2011 03:54 |
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