Deuteron-like states composed of two doubly charmed baryons

Abstract

We present a systematic investigation of the possible molecular states composed of a pair of doubly charmed baryons (ΞccΞcc) or one doubly charmed baryon and one doubly charmed antibaryon (ΞccΞcc) within the framework of the one-boson-exchange-potential model. For the spin-triplet systems, we take into account the mixing between the 3 S1 and 3 D1 channels. For the baryon-baryon system ΞccΞcc with (R, I) = (3, 1/2) and (3, 0), where R and I represent the group representation and the isospin of the system, respectively, there exist loosely bound molecular states. For the baryon-antibaryon system ΞccΞcc with (R, I) = (8, 1), (8, 1/2) and (8, 0), there also exist deuteronlike molecules. The BccBcc molecular states may be produced at LHC. The proximity of their masses to the threshold of two doubly charmed baryons provides a clean clue to identify them.

Possible triple-charm molecular pentaquarks from ΞccD1/ΞccD2*Wang1, Chen2, Liu3 et al. 2019Phys. Rev. D410230View full textAdd to dashboardCite

“…This discovery not only complements the baryon family, but also provides us a good opportunity to study the interactions involved in a doubly charmed baryon. Moreover, we can search for possible double-charm, triple-charm, and tetrad-charm multiquark molecules by constructing a doubly charmed baryon and a nucleon system [5], a doubly charmed baryon and a charmed baryon system [6], a doubly charmed baryon and a doubly charmed baryon system [7], and a doubly charmed baryon and a charmed meson system [8]. Here, we also notice another theoretical prediction of triple-charm pentaquarks [9,10].…”

“…In Refs. [5,7], the effective Lagrangians for S -wave doubly charmed baryons with the light mesons are constructed as…”

Possible molecular states composed of doubly charmed baryons with coupled-channel effect

“…In the single channel calculation Ref. [34], the attraction of the Ω cc Ω cc system is too weak to produce a bound state. But with the help of the channel mixing effects, especially the Ω * cc Ω * cc | 1 S 0 channel, we can obtain a binding solution.…”

“…Törnqvist used the one-pion-exchange (OPE) potential to calculate the possible charmed meson-antimeson molecular state [21,22]. Besides, there are also many other calculations about possible hadronic molecular states, such as the combination of two mesons [23,24,25,26,27,28,29], or two baryons [30,31,32,33,34,35,36]. Similarly, one can also explain the hidden charm pentaquark states as a molecular state formed by one heavy meson and one heavy baryon [37,38,39,40,41,42,43,44,45].…”

“…In Ref. [34], the authors investigated the possible deuteronlike bound states composed of two spin- 1 2 doubly charmed baryons in the SU(3) flavor symmetry. In this work, we extend the same formalism to investigate the possible hadronic arXiv:1906.04956v1 [hep-ph] 12 Jun 2019 molecular states composed of two spin- 3 2 doubly charmed baryons (include Ξ cc and Ω cc ), denoted as B * B * , as well as system one spin- 3 2 and one spin-1 2 baryon, denoted as B * B.…”