학술논문
Measurement of B --> K*gamma branching fractions and charge asymmetries.
Document Type
article
Author
Aubert, B; Boutigny, D; Gaillard, J-M; Hicheur, A; Karyotakis, Y; Lees, JP; Robbe, P; Tisserand, V; Palano, A; Chen, GP; Chen, JC; Qi, ND; Rong, G; Wang, P; Zhu, YS; Eigen, G; Reinertsen, PL; Stugu, B; Abbott, B; Abrams, GS; Borgland, AW; Breon, AB; Brown, DN; Button-Shafer, J; Cahn, RN; Clark, AR; Gill, MS; Gritsan, AV; Groysman, Y; Jacobsen, RG; Kadel, RW; Kadyk, J; Kerth, LT; Kluth, S; Kolomensky, Yu G; Kral, JF; LeClerc, C; Levi, ME; Liu, T; Lynch, G; Meyer, AB; Momayezi, M; Oddone, PJ; Perazzo, A; Pripstein, M; Roe, NA; Romosan, A; Ronan, MT; Shelkov, VG; Telnov, AV; Wenzel, WA; Zisman, MS; Bright-Thomas, PG; Harrison, TJ; Hawkes, CM; Knowles, DJ; O'Neale, SW; Penny, RC; Watson, AT; Watson, NK; Deppermann, T; Goetzen, K; Koch, H; Krug, J; Kunze, M; Lewandowski, B; Peters, K; Schmuecker, H; Steinke, M; Andress, JC; Barlow, NR; Bhimji, W; Chevalier, N; Clark, PJ; Cottingham, WN; De Groot, N; Dyce, N; Foster, B; McFall, JD; Wallom, D; Wilson, FF; Abe, K; Hearty, C; Mattison, TS; McKenna, JA; Thiessen, D; Jolly, S; McKemey, AK; Tinslay, J; Blinov, VE; Bukin, AD; Bukin, DA; Buzykaev, AR; Golubev, VB; Ivanchenko, VN; Korol, AA; Kravchenko, EA; Onuchin, AP; Salnikov, AA; Serednyakov, SI
Source
Physical review letters. 88(10)
Subject
Language
Abstract
The branching fractions of the exclusive decays B0-->K(*0)gamma and B+-->K(*+)gamma are measured from a sample of (22.74+/-0.36)x10(6) BB decays collected with the BABAR detector at the PEP-II asymmetric e(+)e(-) collider. We find B (B0-->K(*0)gamma) = [4.23+/-0.40(stat)+/-0.22(syst)]x10(-5), B(B+-->K(*+)gamma) = [3.83+/-0.62(stat)+/-0.22(syst)]x10(-5) and constrain the CP-violating charge asymmetry to be -0.170K(*)gamma)