Exclusive Weak Decays of B–Mesons

CPviolation in quasi-inclusiveB→K(*)Browder1, Datta2, He3 et al. 1998Phys. Rev. D311400View full textAdd to dashboardCite

“…Figures. 3(a), 3(b) show the effect of choosing two sets of form factors from Ref [23] and Ref [24] with a different k 2 behavior of the form factors. For the energy region E K > 2 GeV the form factor effects are negligible for the decay distributions as well as the asymmetries.…”

“…In our calculation we will use the form factors of Ref [23] for the primary result. To check the dependence of the results on form factors we will also use the modified BSW model [24] which has a dipole behavior for the form factors. The form factors in Ref [23] are first evaluated at k 2 = 0 and then extrapolated to a finite k 2 assuming a monopole behavior for all the form factors.…”

Two body non-leptonic decays of B and Bs mesons

“…The relevant matrix elements at leading order in 1/M Q are [2] [23] [24], potential models, and estimated phenomenologically [14]. We shall take for it the expression [25] ξ(w) = 2 1 + w exp −(2ρ 2 − 1) w − 1 w + 1 (2.4) which reproduces rather well the semileptonic data [26] with ρ ≃ 1.19, V cb = 0.04, τ B = 1.4ps.…”

Final state interactions in B → Dϱ and decays

“…This seems rather plausible because the final decay products are moving away from each other with large momentum; due to the relativistic time dilatation, the formation time of the final particles is large and, when formed, they are far away from the color sources, which implies that strong phases induced by the color interactions should be small [7] (see also [8]). Some evidence for this comes for example from exclusive non-leptonic two-body B decays [9].…”

“…For decay amplitudes, final state interactions are taken into account by means of the Watson's theorem [8,12]:…”