出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Using 22.7M B B events collected with the BABAR detector at SLAC, we
present preliminary measurements of the branching fractions for charmless hadronic decays
of B mesons into two-body, quasi two-body and three-body nal states with pions,
kaons, and and a0 resonances. In the search for exclusive B0 ! +−0, we measure
B(B0 ! (770) ) = (28:95:44:3) 10−6, together with the relative asymmetry
Aphys = −0:04 0:18 0:02. We also set the upper limits on B0 ! 0(770)0,
non-resonant B0 ! +−0, B0 ! a
0 (! ) and B0 ! K0 K0.
