Branching fraction measurements of charged B decays to K*+K+K-, K*+pi K-+(-), K*+K+pi(-) and K*+pi(+)pi(-) final states

作者：Aubert B^*; Barate R; Bona M; Boutigny D; Couderc F; Karyotakis Y; Lees J P; Poireau V; Tisserand V; Zghiche A; Grauges E; Palano A; Chen J C; Qi N D; Rong G; Wang P; Zhu Y S; Eigen G; Ofte I; Stugu B; Abrams G S; Battaglia M; Brown D N; Button Shafer J; Cahn R N; Charles E; Gill M S; Groysman Y; Jacobsen R G; Kadyk J A; Kerth L T; Kolomensky Yu G; Kukartsev G; Lynch G; Mir L M; Orimoto T J; Pripstein M

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2006, 74(5): 051104.

DOI：10.1103/PhysRevD.74.051104

Branching fraction and asymmetry measurements of charmless B+-> K(*+)h(1)(+)h(2)(-) (where h(1,2)=K, pi) decays are presented, using a data sample of 232x10(6) Upsilon(4S)-> B (B) over bar decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. Using a maximum likelihood fit, the following branching fraction results were obtained: B(B+-> K*+K+K-)=(36.2 +/- 3.3 +/- 3.6)x10(-6) and B(B+-> K*+pi(+)pi(-))=(75.3 +/- 6.0 +/- 8.1)x10(-6). Upper limits were set for B(B+-> K*+pi K-+(-))< 11.8x10(-6) and B(B+-> K*+K+pi(-))< 6.1x10(-6) at 90% confidence level. The charge asymmetries for the decays B+-> K*+K+K- and B+-> K*+pi(+)pi(-) were measured to be A(K)(*)KK=0.11 +/- 0.08 +/- 0.03 and A(K)(*)pi pi=0.07 +/- 0.07 +/- 0.04, respectively. The first error quoted on branching fraction and asymmetry measurements is statistical and the second systematic.

• 出版日期2006-9
• 单位Perugia; McGill; 中国地震局; 中国科学院高能物理研究所