TY - JOUR
T1 - Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in B → η' K Decays
AU - Aubert, B
AU - Barrett, Matthew
AU - Ford, Kelly
AU - Harrison, Theresa
AU - Hart, Alistair
AU - Hawkes, Christopher
AU - Morgan, Sian
AU - Watson, Alan
PY - 2005/1/1
Y1 - 2005/1/1
N2 - We present measurements of the B --> eta(')K branching fractions; for B(+) --> eta(')K(+) we measure also the time-integrated charge asymmetry Alpha(ch), and for B(0) --> eta(')K(0)(S) the time-dependent CP-violation parameters S and C. The data sample corresponds to 232 x 10(6) BB pairs produced by e(+)e(-) annihilation at the Upsilon (4S). The results are Beta(B --> eta(')K(+)) = (68.9 +/- 2.0 +/- 3.2) x 10(-6), Beta(B(0) --> eta(')K(0)) = (67.4 +/- 3.2) x 10(-6), Alpha(ch) = 0.033 +/- 0.028 +/- 0.005, S = 0.30 +/- 0.140 +/- 0.02, and C = -0.21 +/- 0.10 +/- 0.02, where the first error quoted is statistical and the second is systematic.
AB - We present measurements of the B --> eta(')K branching fractions; for B(+) --> eta(')K(+) we measure also the time-integrated charge asymmetry Alpha(ch), and for B(0) --> eta(')K(0)(S) the time-dependent CP-violation parameters S and C. The data sample corresponds to 232 x 10(6) BB pairs produced by e(+)e(-) annihilation at the Upsilon (4S). The results are Beta(B --> eta(')K(+)) = (68.9 +/- 2.0 +/- 3.2) x 10(-6), Beta(B(0) --> eta(')K(0)) = (67.4 +/- 3.2) x 10(-6), Alpha(ch) = 0.033 +/- 0.028 +/- 0.005, S = 0.30 +/- 0.140 +/- 0.02, and C = -0.21 +/- 0.10 +/- 0.02, where the first error quoted is statistical and the second is systematic.
UR - http://www.scopus.com/inward/record.url?scp=27144439075&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.94.191802
DO - 10.1103/PhysRevLett.94.191802
M3 - Article
C2 - 16090161
SN - 1079-7114
VL - 94
SP - 191802
JO - Physical Review Letters
JF - Physical Review Letters
ER -