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

TL;DR

This paper provides phenomenological estimates of the masses of cryptoexotic pentaquarks with hidden beauty and strangeness, based on recent experimental data and theoretical models, offering insights into quarkonia interactions with nucleons.

Contribution

It introduces simple mass estimation methods for hidden beauty and strangeness pentaquarks, aligning with experimental findings and existing theoretical frameworks.

Findings

Estimated masses of hidden beauty pentaquarks around 10.8 and 10.7 GeV.

Masses of hidden strangeness pentaquarks approximately 2.37 and 2.30 GeV.

Results agree with models of isospin exchange and chiral soliton approaches.

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.