Measurements of the Branching Fraction and Time-Dependent CP Asymmetries of B0 to J/Psi pi0 Decays

George, K

Stanford Linear Accelerator Center

关键词: Particle Decay;    Vector Mesons Experiment-Hep,Hepex;    Experiment-Hep,Hepex;    Pions Neutral;    Asymmetry;   

DOI  :  10.2172/877200
RP-ID  :  SLAC-PUB-11731
RP-ID  :  AC02-76SF00515
RP-ID  :  877200

美国|英语

来源: UNT Digital Library

【 摘 要 】

We present measurements of the branching fraction and time-dependent CP asymmetries in B{sup 0} {yields} J/{psi}{pi}{sup 0} decays based on (231.8 {+-} 2.6) x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We obtain a branching fraction {Beta}(B{sup 0} {yields} J/{psi}{pi}{sup 0}) = (1.94 {+-} 0.22 (stat) {+-} 0.17 (syst)) x 10{sup -5}. We also measure the CP asymmetry parameters C = -0.21 {+-} 0.26 (stat) {+-} 0.06 (syst) and S = -0.68 {+-} 0.30 (stat) {+-} 0.04 (syst).