Partial-wave analysis to determine the spin of $\Xi(1690)^-$ and $\Xi(1820)^-$ produced in $\overline{p}p$ annihilation

Autor:	Pachattu, Deepak
Rok vydání:	2024
Předmět:	Nuclear Theory High Energy Physics - Experiment High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Experiment
Druh dokumentu:	Working Paper
Popis:	Recently [arXiv:2201.03852v2] the PANDA collaboration studied the feasibility of determining the spin and parity of the $\Xi(1690)^{-}$and $\Xi(1820)^{-}$ resonances in the $\Lambda K^-$ system produced in $\bar{p}p$ collisions via the reaction channel $\overline{p} p \rightarrow \bar{\Xi}^{+} \Lambda K^{-}$. This contribution aims to study these reactions using a model-independent irreducible tensor formalism developed earlier. This study leads us to identify the partial-wave amplitude, which would be zero if $\Xi(1690)^{-}$ or $\Xi(1820)^{-}$ had spin-1/2, provided these resonances are produced at threshold (s-wave production). Comment: 7 pages, uses RevTeX, no figures or tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2409.04886 Zobrazit plný text záznamu View this record from Arxiv