TY  - JOUR
AU  - Roca, L.
AU  - Song, J.
AU  - Oset, E.
PY  - 2024
DA  - 2024//
TI  - Molecular pentaquarks with hidden charm and double strangeness
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 094005
EP  - 8pp
VL  - 109
IS  - 9
PB  - Amer Physical Soc
AB  - We analyze theoretically the coupled-channel meson-baryon interaction with global flavor c<overline>cssn and c<overline>csss, where mesons are pseudoscalars or vectors, and baryons have JP = 1/2+ or 3/2+. The aim is to explore whether the nonlinear dynamics inherent in the unitarization process within coupled channels can dynamically generate double- and triple-strange pentaquark-type states (Pcss and Pcsss, respectively), for which there is no experimental evidence to date. We evaluate the s-wave scattering matrix by implementing unitarity in coupled channels, using potential kernels obtained from t-channel vector meson exchange. The required PPV and VVV vertices are obtained from Lagrangians derived through appropriate extensions of the local hidden gauge symmetry approach to the charm sector, while capitalizing on the symmetry of the spin and flavor wave function to evaluate the BBV vertex. We find four different poles in the double strange sector, some of them degenerate in spin. For the triple-strange channel, we find the meson-baryon interaction insufficient to generate a bound or resonance state through the unitary coupled-channel dynamics.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2403.08732
UR  - https://doi.org/10.1103/PhysRevD.109.094005
DO  - 10.1103/PhysRevD.109.094005
LA  - English
N1  - WOS:001224715500002
ID  - Roca_etal2024
ER  -