Width of a two-body coupled-channel resonance

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.

10 pages, 3 figures. To appear in Eur. Phys. J. C

References in corpus (6)

• Multiquark Resonances
• The Effects of Charged Charm Mesons on the Line Shapes of the X(3872)
• Charmonium spectroscopy above thresholds
• Model-independent resonance parameter extraction using the trace of K and T matrices
• Synchonisation of Resonances with Thresholds
• Effect of thresholds on the width of three-body resonances

Cited by in corpus (9)

• Forces inside hadrons: pressure, surface tension, mechanical radius, and all that
• $\Omega NN$ and $\Omega \Omega N$ states
• Doubly charmed multibaryon systems
• $T_{bbb}$: a three $B-$meson bound state
• Hidden-flavor pentaquarks
• Hidden and open heavy-flavor hadronic states
• Exotic Heavy Hadrons
• Neutral baryonic systems with strangeness
• ${\Xi }^{-}t$ quasibound state instead of $\Lambda \Lambda nn$ bound state