Width of a two-body coupled-channel resonance

2018/03/01 by H. Garcilazo, A. Valcarce · 11 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Hadron #High-Energy Particle Collisions Research #Phase (matter) #Position (finance) #Quantum Chromodynamics and Particle Interactions #Relative phase #Resonance (particle physics) #Space (punctuation) #hep-ph #nucl-th

paper · pdf · doi:10.1140/epjc/s10052-018-5747-7

published in The European Physical Journal C 78(3) (Springer Science+Business Media) · 10 pages, 3 figures. To appear in Eur. Phys. J. C

openalex publication_date 2018/03/01 · arxiv created 2018/03/23 · arxiv updated 2018/03/28 · openalex created_date 2018/03/29 · openalex updated_date 2026/08/05

Abstract

We study the width of a two-body resonance in a coupled-channel system. We demonstrate how the width does not come only determined by the available phase space for its decay to the detection channel, but it greatly depends on the relative position of the mass of the resonance with respect to the masses of the coupled-channels generating the state. Our results are consistent with the experimental observation of narrow hadrons lying well above their lowest decay threshold.

Citations

• Observation and Properties of theX(3872)Decaying toJ/ψπ+π−inpp¯Collisions ats=1.96 TeV
• Model-independent resonance parameter extraction from the trace of K and T matrices
• SYNCHRONISATION OF RESONANCES WITH THRESHOLDS
• Observation of J/ψp resonances consistent with pentaquark states in Λ_b⁰→ J/ψK^-p decays
• Study of theB−→J/ψK−π+π−decay and measurement of theB−→X(3872)K−branching fraction
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• The hidden-charm pentaquark and tetraquark states
• Exotic hadrons with heavy flavors: X, Y, Z, and related states