학술논문
Measurement of the ratio B(B- → D*0K -)/B(B → D*0π-) and of the CP asymmetry of B- → D*CP+ 0K - decays
Document Type
article
Author
Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, JP; Poireau, V; Tisserand, V; Zghiche, A; Graugés, E; Palano, A; Pompili, A; Chen, J; Qi, N; Rong, G; Wang, P; Zhu, Y; Eigen, GP; Ofte, I; Stugu, B; Abrams, GS; Borgland, AW; Breon, AB; Brown, DN; Button-Shafer, J; Cahn, RN; Charles, E; Day, C; Gill, M; Gritsan, AV; Groysman, Y; Jacobsen, RG; Kadel, RW; Kadyk, JA; Kerth, LT; Kolomensky, YG; Kukartsev, GA; Lynch, GR; Mir, LM; Oddone, PJ; Orimoto, TJ; Pripstein, M; Roé, N; Ronan, MT; Wenzel, WA; Barrett, MJP; Ford, KE; Harrison, TJE; Hart, AJ; Hawkes, CM; Morgan, SE; Watson, AT; Fritsch, M; Goetzen, K; Held, T; Koch, HC; Lewandowski, B; Pelizaeus, M; Schroeder, TV; Steinke, MF; Boyd, JT; Chevalier, NI; Cottingham, WN; Kelly, MP; Latham, TE; Wilson, FF; Çuhadar-Dönszelmann, T; Hearty, C; Knecht, NS; Mattison, TS; McKenna, JA; Thiessen, DM; Khan, A; Kyberd, P; Teodorescu, L; Blinov, AE; Blinov, VE; Druzhinin, VP; Golubev, VB; Ivanchenko, VN; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, YI; Solodov, EP; Yushkov, AN; Best, DS; Bruinsma, MS; Chao, M; Eschrich, IG; Kirkby, D; Lankford, AJ; Mandelkern, MA; Mommsen, RK; Roethel, W; Stoker, DP; Buchanan, CD; Hartfiel, BL; Weinstein, AJR; Foulkes, SD
Source
Physical Review D - Particles, Fields, Gravitation and Cosmology. 71(3)
Subject
Language
Abstract
We study the decays B- → D*0π - and B-→ D*0K-, where the D*0 decays into D0π0, with the D0 reconstructed in the CP-even (CP+) eigenstates K-K + and π-π+ and in the (non-CP) channels K-π+, K -π+π+π-, and K -π+π0. Using a sample of about 123 × 106 BB̄ pairs, we measure the ratios of decay rates R*non-CP ≡ B(B- → D* non-CP 0K-)/B(B- → D*non-CP 0π-) = 0.086 ± 0.0040(stat)-0.0031 +0.0042(syst), and provide the first measurements of R*CP+ ≡ B(B- → D*CP+ 0K-)/B(B- → D*CP+ 0π-) = 0.0086 ± 0.021(stat) ± 0.007(syst), and of the CP asymmetry A*CP+ ≡ B(B- → D*CP+ 0K -)-B(B+ → D*CP+ 0K +)/B(B- → D*CP+ 0K -)+B(B+ → D*CP+ 0K +) = 0.10 ± 0.23(stat)-0.04 +0.03(syst). © 2005 The American Physical Society.