Phenomenological model for $γγ^* \to K\bar{K}^*(892)$ constraining the $f_1(1420)$ transition form factor
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910571627020288 |
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| author | Ren, Xiu-Lei Danilkin, Igor Vanderhaeghen, Marc |
| author_facet | Ren, Xiu-Lei Danilkin, Igor Vanderhaeghen, Marc |
| contents | We present a phenomenological study of the $γγ^*\to K\bar{K}^*(892)$ process by including the $s$-channel production of the $η(1475)$ and $f_1(1420)$ resonances. The non-resonant channel via $K$- and $K^*$-exchanges is investigated carefully by performing the Lorentz tensor decomposition and is constructed to yield a correct high-energy Regge behavior. The transition form factor of $f_1(1420)$ is adjusted to achieve a reasonable description of the existing L3 data in the $f_1(1420)$ resonance region. This model is intended to serve as a Monte Carlo generator for the analysis currently being performed by the BESIII Collaboration. We also estimate the polarized $γγ^*\to K\bar{K}^*(892)$ cross sections and demonstrate how to extract the transition form factors of $f_1(1420)$ from the polarized cross sections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05091 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phenomenological model for $γγ^* \to K\bar{K}^*(892)$ constraining the $f_1(1420)$ transition form factor Ren, Xiu-Lei Danilkin, Igor Vanderhaeghen, Marc High Energy Physics - Phenomenology Nuclear Theory We present a phenomenological study of the $γγ^*\to K\bar{K}^*(892)$ process by including the $s$-channel production of the $η(1475)$ and $f_1(1420)$ resonances. The non-resonant channel via $K$- and $K^*$-exchanges is investigated carefully by performing the Lorentz tensor decomposition and is constructed to yield a correct high-energy Regge behavior. The transition form factor of $f_1(1420)$ is adjusted to achieve a reasonable description of the existing L3 data in the $f_1(1420)$ resonance region. This model is intended to serve as a Monte Carlo generator for the analysis currently being performed by the BESIII Collaboration. We also estimate the polarized $γγ^*\to K\bar{K}^*(892)$ cross sections and demonstrate how to extract the transition form factors of $f_1(1420)$ from the polarized cross sections. |
| title | Phenomenological model for $γγ^* \to K\bar{K}^*(892)$ constraining the $f_1(1420)$ transition form factor |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2403.05091 |