Strong three-body decays ofΛc(2940)+in a hadronic molecule picture

Abstract

The Λc (2940) + baryon with quantum numbers+ is considered as a hadronic molecule composed of a nucleon and D * meson. We give predictions for the width of the strong three-body decay processes Λc (2940) + → Λc(2286) + π + π − and Λc(2286) + π 0 π 0 in this interpretation. Upcoming experimental facilities like a Super B factory at KEK or LHCb might be able to provide data on these decay modes.

Exotic Hadrons: Review and Perspectives

“…models of baryon-resonance spectroscopy should now start with the narrow charmed baryons, and work back to those broad old resonances." Among the current discussions, there is the suggestion that Λ c (2980) is mainly a D * p molecule [79].…”

Hadronic molecules for charmed and bottom baryons near thresholds

“…The reasons are that the wave functions of hadronic molecules are spatially large as compared to the conventional three quark states, and that the transitions, e.g., from DN ( " BN) to AE c (AE b ), are suppressed by a heavy quark exchange. From those points of view, in the present discussion, we focus on the role of the D ðÃÞ N and " B ðÃÞ N sectors and study the bound or resonant states generated by D ðÃÞ N and " B ðÃÞ N. Recently, there have been several studies of baryon states as D ðÃÞ N ( " B ðÃÞ N) [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] and " D ðÃÞ AE c (B ðÃÞ AE b ) [41][42][43] molecules. The present study is different from them in that we focus on the states near the thresholds and with a large angular momentum.…”

Role of theΛc+(2940)in theπXie1, Dong2, Cao3 2015Phys. Rev. D420270View full textAdd to dashboardCite

“…has been proved to be also reasonable for the observed threebody decay modes and radiative decays [6,7].…”