Measurements of Direct CP Asymmetries in B→X_sγ Decays using Sum of Exclusive Decays
| dc.contributor.ORCID | 0000-0003-0867-2189 (Lou, X) | |
| dc.contributor.VIAF | 250674117 (Izen, JM) | en_US |
| dc.contributor.VIAF | 250674117 (Izen, JM) | |
| dc.contributor.author | Lees, J. P. | en_US |
| dc.contributor.author | Poireau, V. | en_US |
| dc.contributor.author | Tisserand, V. | en_US |
| dc.contributor.author | Grauges, E. | en_US |
| dc.contributor.author | Palano, A. | en_US |
| dc.contributor.author | Eigen, G. | en_US |
| dc.contributor.author | Stugu, B. | en_US |
| dc.contributor.author | Izen, Joseph M. | en_US |
| dc.contributor.author | Lou, Xinchou | en_US |
| dc.contributor.author | BaBar Collaboration | en_US |
| dc.contributor.utdAuthor | Lou, Xinchou | en_US |
| dc.contributor.utdAuthor | Izen, Joseph M. | en_US |
| dc.date.accessioned | 2015-01-30T21:29:11Z | |
| dc.date.available | 2015-01-30T21:29:11Z | |
| dc.date.created | 2014-11-05 | en_US |
| dc.date.issued | 2014-11-05 | en_US |
| dc.description.abstract | We measure the direct CP violation asymmetry, A_{CP}, in B→X_s and the isospin difference of the asymmetry, ΔA_{CP}, using 429 fb⁻¹ of data collected at ϒ(4S) resonance with the BABAR detector at the PEP- II asymmetric-energy e⁺e⁻ storage rings operating at the SLAC National Accelerator Laboratory. B mesons are reconstructed from ten charged B final states and six neutral B final states. We find A_{CP} = +(1.7 ± 1.9 ± 1.0)%, which is in agreement with the Standard Model prediction and provides an improvement on the world average. Moreover, we report the first measurement of the difference between A_{CP} for charged and neutral decay modes, ΔA_{CP} = +(5.0 ± 3.9 ± 1.5)%. Using the value of ΔA(CP), we also provide 68% and 90% confidence intervals on the imaginary part of the ratio of the Wilson coefficients corresponding to the chromomagnetic dipole and the electromagnetic dipole transitions. | en_US |
| dc.identifier.bibliographicCitation | Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2014. "Measurements of direct CP asymmetries in B→Χ_sγ decays using sum of exclusive decays." Physical Review D 90(9), doi:10.1103/PhysRevD.90.092001 | en_US |
| dc.identifier.issn | 1550-7998 | en_US |
| dc.identifier.issue | 9 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10735.1/4298 | |
| dc.identifier.volume | 90 | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | Amer Physical Soc | en_US |
| dc.relation.uri | http://dx.doi.org/10.1103/PhysRevD.90.092001 | |
| dc.rights | ©2014 American Physical Society | en_US |
| dc.source | Physical Review D | |
| dc.subject | B mesons | en_US |
| dc.subject | CP violation (Nuclear physics) | en_US |
| dc.subject | Asymmetry | en_US |
| dc.subject | Isospin | en_US |
| dc.title | Measurements of Direct CP Asymmetries in B→X_sγ Decays using Sum of Exclusive Decays | en_US |
| dc.type | Text | en_US |
| dc.type.genre | Article | en_US |