Study Of The Strong Decays Of Baryons With One Charm Or One Bottom Quark

A baryon consists of three quarks,the relative complexity of this system can reveal?the physics that cannot be seen in the meson system.In particular,the study of the strong decay properties of baryons consisting of two light quarks and one heavy charm quark or one bottom quark can help us understand the Heavy Quark Effective theory better.In recent years,more and more new charmed and bottom baryons have been discovered.Identifying their quantum numbers is helpful to undersand these new particles.Meanwhile,there are lack of systematical studies of ?c baryons,systemmatical studies of these baryons can help us to explore their intrinsic properties.In this article,firstly,we make a simple introduction of the 3P0 model,and then calcu-late the strong decays of ?c and ?b baryons in the frame of 3P0.Their internal structure and properties are analyzed according to their decay widths and branching ratios.Recently,new ?b± resonance states with masses around 6097 MeV have been found in the ?b? channel,which were named ?b±(6097).We find that their total angular momentum could be 3/2 or 5/2 of the P wave states.The conclusion is consistent with the result-s obtained by mass spectroscopy analysis and chiral quark model.Besides,we give the branching ratios of J=3/2 and J=5/2,which will help us to identify it.We made a systimatic study of the particles ?b??b*??c(2455)??c(2520)??c(2800)(?c(2850))and the particles Ac(2765)or ?c(2765)which are still not determined.Comparing with the experiment,we found that the results of ?b and ?b*hich are assined to the ground state agree well with the experimental values.They are very possibly the ground state with spin 1/2 and 3/2.Since the experimental data is only given to its total width with 50 MeV,and there are many states in P-wave that are consistent with the experiment.So at present,we can't determine this quantum state.The masses of ?c(2800)are close to the masses of the?c(2850).At present,it is not certain whether they're the same state,and no decision was made for these states.In this paper,we considered baryon as a three-body resonance subsystem,and we find that the parameters have a great influence on the decay width.So we took a bunch of parameters to compute,and the variation range and relative error are given.Besides,we also gave some ratios which are helpful for future experimental observation.