Aubert, B;
Barate, R;
Boutigny, D;
Couderc, F;
Karyotakis, Y;
Lees, JP;
Poireau, V;
... BaBar Collaboration; + view all
(2005)
Measurements of branching fractions and time-dependent CP-violating asymmetries in B -> eta ' K decays.
PHYS REV LETT
, 94
(19)
, Article 191802. 10.1103/PhysRevLett.94.191802.
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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.
| Type: | Article |
|---|---|
| Title: | Measurements of branching fractions and time-dependent CP-violating asymmetries in B -> eta ' K decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.94.191802 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.94.191802 |
| Language: | English |
| Additional information: | © 2005 The American Physical Society |
| Keywords: | QCD FACTORIZATION, B DECAYS, AMPLITUDES, PHYSICS, ETA' |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1303712 |
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