Analysis of $B\to KM_X$ and $B\to K^* M_X$ decays in scalar- and vector-mediator dark-matter scenarios
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| Format: | Preprint |
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2025
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| _version_ | 1866911638759669760 |
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| author | Berezhnoy, Alexander Lucha, Wolfgang Melikhov, Dmitri |
| author_facet | Berezhnoy, Alexander Lucha, Wolfgang Melikhov, Dmitri |
| contents | The surprising excess of missing-energy events far beyond all standard-model expectations in the weak decays of the charged ground-state $B^+$ meson into some charged strange meson, rather recently observed by the Belle-II experiment, may (easily) be explained by the decay of the $B$ meson into the strange meson and a pair of dark-matter fermion and antifermion, mediated by an (intermediate) scalar or vector boson. Thorough inspections of both the total and the differential widths of these decays provide, among others, a simple means for the (straightforward) discrimination of such mediator boson's scalar or vector nature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_16222 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Analysis of $B\to KM_X$ and $B\to K^* M_X$ decays in scalar- and vector-mediator dark-matter scenarios Berezhnoy, Alexander Lucha, Wolfgang Melikhov, Dmitri High Energy Physics - Phenomenology The surprising excess of missing-energy events far beyond all standard-model expectations in the weak decays of the charged ground-state $B^+$ meson into some charged strange meson, rather recently observed by the Belle-II experiment, may (easily) be explained by the decay of the $B$ meson into the strange meson and a pair of dark-matter fermion and antifermion, mediated by an (intermediate) scalar or vector boson. Thorough inspections of both the total and the differential widths of these decays provide, among others, a simple means for the (straightforward) discrimination of such mediator boson's scalar or vector nature. |
| title | Analysis of $B\to KM_X$ and $B\to K^* M_X$ decays in scalar- and vector-mediator dark-matter scenarios |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2508.16222 |