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9 papers · 2 filters
Pion-nucleon sigma term revisited in covariant baryon chiral perturbation theory
Xiu-Lei Ren, Xi-Zhe Ling, Li-Sheng Geng
We study the latest and ETMC lattice QCD simulations of the nucleon masses and extract the pion-nucleon sigma term utilizing the Feynman-Hellmann theorem in SU(…
Pentaquarks with hidden charm as hadroquarkonia
Michael I. Eides, Victor Yu. Petrov, Maxim V. Polyakov
We consider hidden charm pentaquarks as hadroquarkonium states in a QCD inspired approach. Pentaquarks arise naturally as bound states of quarkonia excitations and ordinary baryons…
Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model
Hyun-Chul Kim, Maxim V. Polyakov, Michal Praszalowicz +1
In the large limit both heavy and light baryons are described by the universal mean field, which allows us to relate the properties of heavy baryons to light ones. With the o…
New analysis of tensor resonances measured at the COMPASS experiment
A. Jackura, C. Fernandez-Ramirez, M. Mikhasenko +232
We present a new amplitude analysis of the -wave in measured by COMPASS. Employing an analytical model based on the principles of the relativistic -mat…
Are there near-threshold Coulomb-like Baryonia?
Li-Sheng Geng, Jun-Xu Lu, Manuel Pavon Valderrama +1
The system can exchange a pion near the mass-shell. Owing to the opposite intrinsic parity of the and , the pion is exchanged in S-wave. This gives…
Spin partners of the and revisited
V. Baru, E. Epelbaum, A. A. Filin +2
We study the implications of the heavy-quark spin symmetry for the possible spin partners of the exotic states and in the spectrum of bottomonium. We form…