Abstract
We study the masses and lifetimes of doubly charmed pentaquark P_{cc{bar{q}}qq}(q=u,d,s) primarily. The operation of masses carried out by the doubly heavy triquark-diquark model, whose results suggests the existence of stable states cc{bar{s}} ud with the parity J^P=frac{1}{2}^-. The roughly calculation about lifetimes show the short magnitudes, (4.65^{+0.71}_{-0.55})times 10^{-13}s for the parity J^P=frac{1}{2}^- and (0.93^{+0.14}_{-0.11})times 10^{-12} s for J^P=frac{3}{2}^-. Since the pentaquark cc{bar{s}} ud is interpreted as the stable bound states against strong decays, then we will focus on the production and possible decay channels of the pentaquark in the next step, the study would be fairly valuable supports for future experiments. For completeness, we systematically studied the production from Omega _{ccc} and the decay modes in the framework SU(3) flavor symmetry, including the processes of semi-leptonic and two body non-leptonic decays. Synthetically, we make a collection of the golden channels.
Highlights
In 2015, the LHCb collaboration announced the findings of the first pentaquark states Pc(4380)+ and Pc(4450)+ in the decay
We employ the triquark-diquark model [6,21,22], which heavy diquark [cc]3 ̄ combines with antiquark q3 ̄ to form a triquark system [[cc]3 ̄ q3 ̄ ]3, and merging with light diquark [qq ]3 ̄ to form the doubly charmed pentquark state
We study the mass spectrum of S-wave pentaquark states
Summary
In 2015, the LHCb collaboration announced the findings of the first pentaquark states Pc(4380)+ and Pc(4450)+ in the decay. With the SU(3) amplitudes, one can obtain relations between decay widths of different processes, which can be examined in experiment Such an analysis is helpful to identify the decay modes that will be mostly useful to discover the doubly charmed pentaquark state P(ccqqq). Under the picture of diquark consisting of two light quarks qq in color 3 ̄ state and triquark consisting of doubly heavy diquark cc in color 3 ̄ plus a light anti-quark qin color 3 ̄, which labeled as [[cc]c3 ̄ [q]c3 ̄ ]c3[qq ]c3 ̄ , the effective Hamiltonian of mass spectrum can be written as. The spin of “good” light diquark in the S-wave pentaquark state Pccqqq is chosen as Sqq = 0 [41]. It is worth noting, the difference value much smaller than the uncertainties in our work, this may play an increasingly role at the final con-
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