تقرير
Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN
| العنوان: | Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN |
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| المؤلفون: | Gninenko, Sergei N., Kirpichnikov, Dmitry V., Krasnikov, Nikolai V., Kuleshov, Sergey, Lyubovitskij, Valery E., Zhevlakov, Alexey S. |
| سنة النشر: | 2024 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | We consider the possibility of discovering a light pseudoscalar particle $a$, which could the axion or an axion-like particle (ALP), interacting mainly with quarks using the electron and photon scattering reaction chain $e + Z \rightarrow e + \gamma + Z$; $\gamma + Z \rightarrow a + Z$ on nuclei in the NA64 experiment at the CERN SPS. New bounds on the coupling strengths of the axion/ALP with quarks and of pseudoscalar mesons $P = \pi, \eta, \eta'$ with dark fermions are obtained by using existing upper bounds on invisible decay modes of $P$s including those recently derived by NA64. We also study a scenario when the $a$ plays the role of a messenger in the communication between our world and the dark sector. Comment: 17 pages, 1 figure |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2407.01181 |
| رقم الأكسشن: | edsarx.2407.01181 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |