2008/06/18 by Hai-Yang Cheng, Cheng, Hai-Yang · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.0806.2895
8 pages, 1 figure, typos corrected
arxiv created 2008/06/19 · arxiv updated 2009/12/01
Charmless 3-body decays of B mesons are studied in a simple model based on the factorization approach. We have identified two distinct sources of nonresonant contributions: a small contribution from the tree transition and a large source of the nonresonant signal in the matrix elements of scalar densities, e.g., <K K| ss|0>, induced from the penguin transition. This explains the dominance of the nonresonant background in B→ KKK decays, the sizable nonresonant fraction in K-π+π- and K0π+π- modes and the smallness of nonresonant rates in B→ πππ decays. The seemingly huge discrepancy between BaBar and Belle for the nonresonant contribution in the decay B-→ K-π+π- is now relieved. We have computed the resonant and nonresonant contributions to charmless 3-body decays and determined the rates for the quasi-two-body decays B→ VP and B→ SP. Time-dependent CP asymmetries sin2β\rm eff and ACP in K+K-KS,KSKSKS,KSπ+π- and KSπ0π0 modes are estimated.