English

Photoproduction of the $ \Lambda (1800) $

High Energy Physics - Phenomenology 2024-10-07 v2

Abstract

We have carried out a study of the γ ppK+K(KKπ0)\gamma ~ p \rightarrow p K^{+} K^{*-} (K^{*-} \rightarrow K^{-} \pi^{0}) , γ ppK+K(KKˉ0π) \gamma ~p \rightarrow p K^{+} K^{*-} ( K^{*-} \rightarrow \bar{K}^{0} \pi^{-} ) and γ pK+Kp \gamma ~p \rightarrow K^{+} K^{-}p reactions, producing the K+Λ(1800)K^+ \Lambda(1800) final state, from the perspective that the Λ(1800)\Lambda(1800) resonance is dynamically generated from the interaction of KˉN\bar{K}^* N with its coupled vector-baryon channels, in complete analogy to the Λ(1405)\Lambda(1405) generated from the interaction of KˉN\bar{K} N and its coupled pseudoscalar-baryon channels. The two reactions are complementary and their mass distributions are tied to the particular nature of this resonance in that framework. We provide much information on the shapes and strength of the invariant mass distributions of these reactions, and the energy dependence of the cross sections, that when contrasted with future experiments should shed valuable light on the nature of this resonance and its analogy to the Λ(1405)\Lambda(1405).

Keywords

Cite

@article{arxiv.2409.15124,
  title  = {Photoproduction of the $ \Lambda (1800) $},
  author = {Melahat. Bayar and Jing Song and L. R. Dai and Eulogio Oset},
  journal= {arXiv preprint arXiv:2409.15124},
  year   = {2024}
}

Comments

11 pages, 5 figures

R2 v1 2026-06-28T18:53:52.645Z