2017/12/31 by J. Nieves, R. Pavao, L. Tolos
Physics and Astronomy · #Excited state #Nuclear physics research studies #Parity (physics) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Renormalization #Spin (aerodynamics) #Unitarity #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.1140/epjc/s10052-018-5597-3
published as Eur. Phys. J. C (2018) 78:114 · 11 pages, 3 figures, 6 tables, published in The European Physical Journal C
openalex created_date 2017/12/22 · openalex publication_date 2018/02/01 · arxiv created 2018/03/12 · arxiv updated 2018/03/13 · openalex updated_date 2026/08/05
We have reviewed the renormalization procedure used in the unitarized coupled-channel model of Romanets et al. (Phys Rev D 85:114032, 2012), and its impact in the [Formula: see text], [Formula: see text], and [Formula: see text] sector, where five [Formula: see text] states have been recently observed by the LHCb Collaboration. The meson-baryon interactions used in the model are consistent with both chiral and heavy-quark spin symmetries, and lead to a successful description of the observed lowest-lying odd parity resonances [Formula: see text] and [Formula: see text], and [Formula: see text] and [Formula: see text] resonances. We show that some (probably at least three) of the states observed by LHCb will also have odd parity and [Formula: see text] or [Formula: see text], belonging two of them to the same [Formula: see text] HQSS multiplets as the latter charmed and beauty [Formula: see text] baryons.