Odd-parity dynamically generated baryon resonances with beauty flavor

Odd-parity dynamically generated baryon resonances with beauty flavor

We study baryon resonances with heavy flavor in a molecular approach, thus as dynamically generated by baryon-meson scattering. This is accomplished by using a unitary coupled-channel model taking, as bare interaction, the extension of the Weinberg-Tomozawa SU(3) Lagrangian. A special attention is p...

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Hauptverfasser: Romanets, O, Garcia-Recio, C, Salcedo, L. L, Nieves, J, Tolos, L
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creator Romanets, O
Garcia-Recio, C
Salcedo, L. L
Nieves, J
Tolos, L
description We study baryon resonances with heavy flavor in a molecular approach, thus as dynamically generated by baryon-meson scattering. This is accomplished by using a unitary coupled-channel model taking, as bare interaction, the extension of the Weinberg-Tomozawa SU(3) Lagrangian. A special attention is payed to the inclusion of heavy-quark spin symmetry and to the study of the generated baryon resonances that complete the heavy-quark spin multiplets. Our model reproduces the \Lambda_b(5912) and \Lambda_b(5920) baryons, which were recently observed by the LHCb collaboration. According to our analysis, these two states are heavy-quark spin symmetric partners. We also make predictions for few \Xi_b baryon resonances, which belong to the same SU(3)xHQSS multiplets as the \Lambda_b particles.
doi_str_mv 10.48550/arxiv.1304.4747
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title Odd-parity dynamically generated baryon resonances with beauty flavor
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