Study of Λ(1405) in photoproduction of K^*

2004/04/13 by Tetsuo Hyodo, T. Hyodo, Atsushi Hosaka +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.nucl-th/0404031

revtex4, 4 pages, 5 figures, 1 table, Invited talk at the YITP workshop on ``Multi-quark Hadrons; Four, Five and More?'', Feb. 17-19, 2004, Kyoto, Japan

arxiv created 2004/04/13 · openalex publication_date 2004/04/13 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

We investigate the photoproduction of K^* vector meson for the study of the Λ(1405) resonance. The invariant mass distribution of πΣ shows a different shape from the nominal one, peaking at 1420 MeV. This is considered as a consequence of the double pole structure of Λ(1405), predicted in the chiral unitary model. Combined with other reactions, such as π^- p → K⁰ πΣ, experimental confirmation of this fact will reveal a novel structure of the Λ(1405) state.

Related

• Radiative decay of K^-p system and photoproduction of Λ(1405)
• Testing chiral unitary models for the Λ(1405) in K⁺πΣ photoproduction
• Photoproduction of the Λ(1800)
• Two pole structure of the Lambda(1405) resonance
• Photoproduction of Λ(1405) with the two-pole structure