D¯*D¯*Σc three-body system

Three-body decay of the d dibaryon

Under certain circumstances, a three-body decay width can be approximated by an integral involving a product of two off-shell two-body decay widths. This “angle-average” approximation is used to calculate the πNN decay width of the d(J = 3, T = 0) dibaryon in a simple ∆ model for the most important Feynman diagrams describing pion emissions with baryon-baryon recoil and meson retardation. The d...

Studies of Three-Body B^+→D ̅^* 〖(2007)〗^0 K^+ K ̅^0 and B^0→D^* 〖(2010)〗^- K^+ K ̅^0 Decays

We analyze three-body decays of and . Under the factorization approach, there are tree level diagrams for these decay modes and the transition matrix element of decay is factorized into a form factor multiplied by decay constant and form factor multiplied into weak vertices form factor. The transition matrix element of decay is also factorized into a form factor multiplied into weak vertic...

Analysis of the Three - Body B → D + D − π 0 Decay

Three-body effects in the „d ,He... charge-exchange reaction

The importance of an explicit treatment of continuum channels in the (d ,He) charge-exchange reaction is investigated. The continuum channel effects are clarified by a comparison of the full three-body results with calculations which use the distorted waves approximation to the three-body model. Continuum channel effects are shown to reduce the calculated C(d ,He)B(g.s.) differential cross sect...

Nonresonant Three-body Decays of D and B Mesons

Nonresonant three-body decays of D and B mesons are studied. It is pointed out that if heavy meson chiral perturbation theory (HMChPT) is applied to the heavy-light strong and weak vertices and assumed to be valid over the whole kinematic region, then the predicted decay rates for nonresonant charmless 3-body B decays will be too large and especially B− → π−K+K− greatly exceeds the current expe...