Testing the χ_c1 p composite nature of the P_c(4450)

2015/07/27 by Ulf-G. Meißner, Meißner, Ulf-G., J. A. Oller +1 · 1 citation
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #High-Energy Particle Collisions Research

paper · pdf · doi:10.48550/arxiv.1507.07478

Abstract

Making use of a recently proposed formalism, we analyze the composite nature\nof the P_c(4450) resonance observed by LHCb. We show that the present data\nsuggest that this state is almost entirely made of a \χ_c1 and a proton,\ndue to the close proximity to this threshold. This also suppresses the decay\nmodes into other, lighter channels, in our study represented by J/\Ψ p. We\nfurther argue that this is very similar to the case of the scalar meson\nf₀(980) which is located closely to the K K threshold and has a\nsuppressed decay into the lighter \π\π channel.\n

Cited by

• Dynamical study of hidden-strange pentaquarks as analogs of the hidden-charm states

Related

• Nature of the P_c states from compositeness criteria
• Insights into the nature of the P_cs(4459)
• LHCb P_c⁺ Resonances as Molecular States
• Exploration of the LHCb P_c states and possible resonances in a unitary coupled-channel model
• Inclusive production of the P_c resonances in p p collisions