Partial-wave analysis to determine the spin of $Ξ(1690)^-$ and $Ξ(1820)^-$ produced in $\overline{p}p$ annihilation
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866914943170772992 |
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| author | Pachattu, Deepak |
| author_facet | Pachattu, Deepak |
| contents | Recently [arXiv:2201.03852v2] the PANDA collaboration studied the feasibility of determining the spin and parity of the $Ξ(1690)^{-}$and $Ξ(1820)^{-}$ resonances in the $ΛK^-$ system produced in $\bar{p}p$ collisions via the reaction channel $\overline{p} p \rightarrow \barΞ^{+} ΛK^{-}$. 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 $Ξ(1690)^{-}$ or $Ξ(1820)^{-}$ had spin-1/2, provided these resonances are produced at threshold (s-wave production). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04886 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Partial-wave analysis to determine the spin of $Ξ(1690)^-$ and $Ξ(1820)^-$ produced in $\overline{p}p$ annihilation Pachattu, Deepak Nuclear Theory High Energy Physics - Experiment High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Experiment Recently [arXiv:2201.03852v2] the PANDA collaboration studied the feasibility of determining the spin and parity of the $Ξ(1690)^{-}$and $Ξ(1820)^{-}$ resonances in the $ΛK^-$ system produced in $\bar{p}p$ collisions via the reaction channel $\overline{p} p \rightarrow \barΞ^{+} ΛK^{-}$. 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 $Ξ(1690)^{-}$ or $Ξ(1820)^{-}$ had spin-1/2, provided these resonances are produced at threshold (s-wave production). |
| title | Partial-wave analysis to determine the spin of $Ξ(1690)^-$ and $Ξ(1820)^-$ produced in $\overline{p}p$ annihilation |
| topic | Nuclear Theory High Energy Physics - Experiment High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2409.04886 |