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Measurements of branching fractions and time-dependent CP-violating asymmetries in B -> eta ' K decays
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BaBar Collaboration (Including: UNSPECIFIED). (2005) Measurements of branching fractions and time-dependent CP-violating asymmetries in B -> eta ' K decays. PHYSICAL REVIEW LETTERS, 94 (19). -. doi:10.1103/PhysRevLett.94.191802 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.94.191802
Abstract
We present measurements of the B ->eta(')K branching fractions; for B+->eta(')K(+) we measure also the time-integrated charge asymmetry A(ch), and for B-0->eta(')K(S)(0) the time-dependent CP-violation parameters S and C. The data sample corresponds to 232x10(6) B (B) over bar pairs produced by e(+)e(-) annihilation at the Upsilon(4S). The results are B(B ->eta(')K(+))=(68.9 +/- 2.0 +/- 3.2)x10(-6), B(B-0->eta(')K(0))=(67.4 +/- 3.3 +/- 3.2)x10(-6), A(ch)=0.033 +/- 0.028 +/- 0.005, S=0.30 +/- 0.14 +/- 0.02, and C=-0.21 +/- 0.10 +/- 0.02, where the first error quoted is statistical and the second is systematic.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | PHYSICAL REVIEW LETTERS | ||||
| Publisher: | AMERICAN PHYSICAL SOC | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 20 May 2005 | ||||
| Dates: |
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| Volume: | 94 | ||||
| Number: | 19 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | - | ||||
| DOI: | 10.1103/PhysRevLett.94.191802 | ||||
| Publication Status: | Published |
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