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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
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2025
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| Accesso online: | https://arxiv.org/abs/2511.12717 |
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| _version_ | 1866915621472567296 |
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| author | Lellmann, Max Danilkin, Igor Denig, Achim Muskalla, Jan Redmer, Christoph F. Ren, Xiu-Lei Vanderhaeghen, Marc |
| author_facet | Lellmann, Max Danilkin, Igor Denig, Achim Muskalla, Jan Redmer, Christoph F. Ren, Xiu-Lei Vanderhaeghen, Marc |
| contents | We present a Monte Carlo event generator specifically developed for the study of hadronic two-photon fusion events in two-photon scattering at electron-positron colliders. The code enables the generation of events with exact leading-order QED coupling and a flat phase space decay of the hadronic state into an arbitrary number of final state particles as selected by the user. Thus, this generator is well-suited for the use of partial wave analyses tools to study the two-photon production of higher-multiplicity final states across a wide range of energies and photon virtualities. Furthermore, the code integrates both experimental and theoretical inputs on the two-photon couplings of hadrons to simulate two-photon production processes. Motivated by the investigations of the BESIII collaboration, the final states $π^+π^-$, $π^0π^0$, $π^0η$, $K^+K^-$, $K^0_SK^0_S$, $ηη$, and $f_1(1285)\to ηπ^+π^-$ via $a_0^\pm(980)π^\mp$ and $f_0(500)η$ are currently included. The code is sufficiently flexible to easily add additional final states as well as quickly change the already included channels. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_12717 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | HadroTOPS: A Monte Carlo Event Generator For Hadron Production In Two-Photon Scattering In Electron Positron Collisions Lellmann, Max Danilkin, Igor Denig, Achim Muskalla, Jan Redmer, Christoph F. Ren, Xiu-Lei Vanderhaeghen, Marc High Energy Physics - Phenomenology High Energy Physics - Experiment We present a Monte Carlo event generator specifically developed for the study of hadronic two-photon fusion events in two-photon scattering at electron-positron colliders. The code enables the generation of events with exact leading-order QED coupling and a flat phase space decay of the hadronic state into an arbitrary number of final state particles as selected by the user. Thus, this generator is well-suited for the use of partial wave analyses tools to study the two-photon production of higher-multiplicity final states across a wide range of energies and photon virtualities. Furthermore, the code integrates both experimental and theoretical inputs on the two-photon couplings of hadrons to simulate two-photon production processes. Motivated by the investigations of the BESIII collaboration, the final states $π^+π^-$, $π^0π^0$, $π^0η$, $K^+K^-$, $K^0_SK^0_S$, $ηη$, and $f_1(1285)\to ηπ^+π^-$ via $a_0^\pm(980)π^\mp$ and $f_0(500)η$ are currently included. The code is sufficiently flexible to easily add additional final states as well as quickly change the already included channels. |
| title | HadroTOPS: A Monte Carlo Event Generator For Hadron Production In Two-Photon Scattering In Electron Positron Collisions |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2511.12717 |