Measurement of branching fractions and search for CP-violating charge asymmetries in charmless two-body B decays into pions and kaons

• Published in: Physical review letters Vol. 87; no. 15; p. 151802
• Main Authors: Aubert, B, Boutigny, D, Gaillard, J M, Hicheur, A, Karyotakis, Y, Lees, J P, Robbe, P, Tisserand, V, Palano, A, Chen, G P, Chen, J C, Qi, N D, Rong, G, Wang, P, Zhu, Y S, Eigen, G, Reinertsen, P L, Stugu, B, Abbott, B, Abrams, G S, Borgland, A W, Breon, A B, Brown, D N, Button-Shafer, J, Cahn, R N, Clark, A R, Fan, Q, Gill, M S, Gowdy, S J, Gritsan, A, Groysman, Y, Jacobsen, R G, Kadel, R W, Kadyk, J, Kerth, L T, Kluth, S, Kolomensky, Y G, Kral, J F, LeClerc, C, Levi, M E, Liu, T, Lynch, G, Meyer, A B, Momayezi, M, Oddone, P J, Perazzo, A, Pripstein, M, Roe, N A, Romosan, A, Ronan, M T, Shelkov, V G, Telnov, A V, Wenzel, W A, Bright-Thomas, P G, Harrison, T J, Hawkes, C M, Kirk, A, Knowles, D J, O'Neale, S W, Penny, R C, Watson, A T, Watson, N K, Deppermann, T, Koch, H, Krug, J, Kunze, M, Lewandowski, B, Peters, K, Schmuecker, H, Steinke, M, Andress, J C, Barlow, N R, Bhimji, W, Chevalier, N, Clark, P J, Cottingham, W N, De Groot, N, Dyce, N, Foster, B, Mass, A, McFall, J D, Wallom, D, Wilson, F F, Abe, K, Hearty, C, Mattison, T S, McKenna, J A, Thiessen, D, Camanzi, B, Jolly, S, McKemey, A K, Tinslay, J, Blinov, V E, Bukin, A D, Bukin, D A, Buzykaev, A R, Dubrovin, M S, Golubev, V B, Ivanchenko, V N, Korol, A A
• Format: Journal Article
• Language: English
• Published: United States 08.10.2001
• ISSN: 0031-9007
• DOI: 10.1103/PhysRevLett.87.151802

We present measurements, based on a sample of approximately 23x10(6) BB pairs, of the branching fractions and a search for CP-violating charge asymmetries in charmless hadronic decays of B mesons into two-body final states of kaons and pions. We find the branching fractions B(B0-->pi(+)pi(-)) = (4.1+/-1.0+/-0.7)x10(-6), B(B0-->K+pi(-)) = (16.7+/-1.6+/-1.3)x10(-6), B(B+-->K+pi(0)) = (10.8(+2.1)(-1.9)+/-1.0)x10(-6), B(B+-->K0pi(+)) = (18.2(+3.3)(-3.0)+/-2.0)x10(-6), B(B0-->K0pi(0)) = (8.2(+3.1)(-2.7)+/-1.2)x10(-6). We also report 90% confidence level upper limits for B meson decays to the pi(+)pi(0), K+K-, and K0K+ final states. In addition, charge asymmetries have been found to be consistent with zero, where the statistical precision is in the range of +/-0.10 to +/-0.18, depending on the decay mode.