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B→K∗MX vs. B→KMX as a probe of a scalar mediator dark-matter scenarioстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 апреля 2024 г.
- Авторы: Berezhnoy Alexander, Melikhov Dmitri
- Журнал: Europhysics Letters
- Том: 145
- Номер: 1
- Год издания: 2024
- Издательство: EDP Sciences
- Местоположение издательства: France
- Первая страница: 14001-1
- Последняя страница: 14001-4
- Номер статьи: 14001
- DOI: 10.1209/0295-5075/ad1d03
- Аннотация: Recently, Belle II reported the observation of the decay , where MXX is the missing mass, with the branching ratio much exceeding which is the only Standard Model (SM) process contributing to this reaction. If confirmed, this might be an indication of new non-SM particles produced in this decay. One of the possible explanations of the observed effect could be light dark-matter (DM) particles produced via a scalar mediator field. We give simple arguments, that a combined analysis of the and reactions would be a clean probe of the scalar mediator scenario: i) making use of an observed value and ii) assuming that the effect is due to the light dark-matter coupling to the top quark via a scalar mediator field, one finds an upper limit . Within the discussed scenario, this upper limit does not depend on the mass of the scalar mediator nor on the specific details of the unobserved dark-matter particles in the final state.
- Добавил в систему: Мелихов Дмитрий Игоревич