학술논문
Dalitz plot analysis of the decay B0(B̄0)→K±ππ0
Document Type
article
Author
Aubert, B; Bona, M; Karyotakis, Y; Lees, JP; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A; Tico, JG; Grauges, E; Lopez, L; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Abrams, GS; Battaglia, M; Brown, DN; Button-Shafer, J; Cahn, RN; Jacobsen, RG; Kadyk, JA; Kerth, LT; Kolomensky, YG; Kukartsev, G; Pegna, DL; Lynch, G; Orimoto, TJ; Osipenkov, IL; Ronan, MT; Tackmann, K; Tanabe, T; Wenzel, WA; Del Amo Sanchez, P; Hawkes, CM; Soni, N; Watson, AT; Koch, H; Schroeder, T; Walker, D; Asgeirsson, DJ; Cuhadar-Donszelmann, T; Fulsom, BG; Hearty, C; Mattison, TS; McKenna, JA; Barrett, M; Khan, A; Saleem, M; Teodorescu, L; Blinov, VE; Bukin, AD; Buzykaev, AR; Druzhinin, VP; Golubev, VB; Onuchin, AP; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Bondioli, M; Curry, S; Eschrich, I; Kirkby, D; Lankford, AJ; Lund, P; Mandelkern, M; Martin, EC; Stoker, DP; Abachi, S; Buchanan, C; Gary, JW; Liu, F; Long, O; Shen, BC; Vitug, GM; Zhang, L; Paar, HP; Rahatlou, S; Sharma, V; Berryhill, JW; Campagnari, C; Cunha, A; Dahmes, B; Hong, TM; Kovalskyi, D; Richman, JD; Beck, TW; Eisner, AM; Flacco, CJ; Heusch, CA; Kroseberg, J; Lockman, WS; Schalk, T; Schumm, BA; Seiden, A; Wilson, MG; Winstrom, LO; Chen, E
Source
Physical Review D - Particles, Fields, Gravitation and Cosmology. 78(5)
Subject
Language
Abstract
We report a Dalitz-plot analysis of the charmless hadronic decays of neutral B mesons to K±ππ0. With a sample of (231.8±2.6) ×106Υ(4S)→BB̄ decays collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, we measure the magnitudes and phases of the intermediate resonant and nonresonant amplitudes for B0 and B̄0 decays and determine the corresponding CP-averaged branching fractions and charge asymmetries. The inclusive branching fraction and CP-violating charge asymmetry are measured to be B(B0→K+π-π0)=(35.7-1.5+2.6±2.2) ×10-6 and ACP=-0.030-0.051+0.045±0.055 where the first errors are statistical and the second systematic. We observe the decay B0→K* 0(892)π0 with the branching fraction B(B0→K*0(892)π0)=(3.6-0. 8+0.7±0.4)×10-6. This measurement differs from zero by 5.6 standard deviations (including the systematic uncertainties). The selected sample also contains B0→D̄0π0 decays where D̄0→K+π-, and we measure B(B0→D̄0π0)=(2.93±0.17±0.18)×10-4. © 2008 The American Physical Society.