Simple estimates of the masses of pentaquarks with hidden beauty or strangeness

Abstract

The masses of cryptoexotic pentaquarks with hidden beauty are estimated phenomenologically using the results by the LHCb collaboration which discovered recently the cryptoexotic pentaquarks with hidden charm. The expected masses of the hidden beauty pentaquarks are about $10.8$ GeV and $10.7$ GeV in the limit of some kind of heavy quark symmetry. The states with hidden strangeness considered in similar way have masses about $2.37$ Gev and $2.30$ GeV, by several hundreds of MeV higher than states discussed previously in connection with the relatively light positive strangeness pentaquark ${\theta }^{+}$. Empirical data on spectra of pentaquarks can be used to get information about quarkonia interaction with nucleons. The results obtained for the case of heavy flavors are in fair agreement with model of isospin (pion) exchange between flavored baryons and anti-flavored vector mesons, proposed by Karliner and Rosner, and in qualitative agreement with the bound state version of the chiral soliton model.

8 pages; Prepared for Phys. Rev. D

References in corpus (11)

• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• Prediction of narrow $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden charm above 4 GeV
• New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
• Possible pentaquarks with heavy quarks
• Study of the production of ${\Lambda }_b^0$ and ${\overline{B}}^0$ hadrons in $pp$ collisions and first measurement of the ${\Lambda }_b^0\to J/\psi p{K}^{-}$ branching fraction
• On the pentaquark candidates $P_c^{+}(4380)$ and $P_c^{+}(4450)$ within the soliton picture of baryons
• Do the $P_c^{+}$ Pentaquarks Have Strange Siblings?
• Evidence for the J^p=1/2^+ narrow state at 1650 MeV in the photoproduction of KLambda
• On Exotic Systems of Baryons in Chiral Soliton Models
• Heavy quarkonium production: Nontrivial transition from pA to AA collisions
• Search for Pentaquark Theta+ in Hadronic Reaction at J-PARC

Cited by in corpus (11)

• Pentaquark and Tetraquark states
• Heavy Baryons and their Exotics from Instantons in Holographic QCD
• Heavy pentaquark states and a novel color structure
• Search for ${\Lambda }_c^{+}\to \varphi p{\pi }^0$ and branching fraction measurement of ${\Lambda }_c^{+}\to K^{-}{\pi }^{+}p{\pi }^0$
• Heavy Holographic Exotics: Tetraquarks as Efimov States
• Heavy and Strange Holographic Baryons
• QCD sum rule study for hidden-strange pentaquarks
• The axial charges of the hidden-charm pentaquark states
• Hidden bottom pentaquark in the SU(5) version of the flavor-spin model
• Recent results of charmed baryon decays at Belle
• Rescaling of quantized skyrmions: from nucleon to baryons with heavy flavor