On the width of N-Delta and Delta-Delta states

Abstract

It is seen by a coupled-channel calculation that in the two-baryon N-Delta or Delta-Delta system the width of the state is greatly diminished due to the relative kinetic energy of the two baryons, since the internal energy of the particles, available for pionic decay, is smaller. A similar state dependent effect arises from the centrifugal barrier in N-Delta or Delta-Delta systems with non-zero orbital angular momentum. The double-Delta width can become even smaller than the free width of a single Delta. This has some bearing to the interpretation of the d'(2380) resonance recently discovered at COSY.

21 revtex4-1 preprint style pages, 8 figures

References in corpus (7)

• ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?
• Updated analysis of NN elastic scattering to 3 GeV
• Three-body model calculations of Nucleon-Delta and Delta-Delta dibaryon resonances
• How Resonances can synchronise with Thresholds
• Neutron-Proton Scattering in the Context of the $d^{\ast }$(2380) Resonance
• A study of $d^{\ast }(2380)\to d\pi \pi$ decay width
• Partial-Wave Analysis of Nucleon-Nucleon Elastic Scattering Data

Cited by in corpus (11)

• The $d^{\ast }$(2380) dibaryon resonance width and decay branching ratios
• Hadronic molecular assignment for the newly observed ${\Omega }^{\ast }$ state
• Dibaryons: Molecular versus Compact Hexaquarks
• Dibaryon resonances and short-range $NN$ interaction
• $d^{\ast }(2380)$ and its partners in a diquark model
• $\rho \rho$ scattering revisited with coupled-channels of pseudoscalar mesons
• Resonance-like coherent production of a pion pair in the reaction $pd\to pd\pi \pi$ in the GeV region
• Centrifugal effects in N-Delta states
• NN scattering with NDelta coupling: Dibaryon resonances without "dibaryons"?
• Structure and Width of the d*(2380) Dibaryon
• On the width of the $\Delta (1232)$ in $N\Delta$ and $\Delta \Delta$ states