https://doi.org/10.1140/epjs/s11734-024-01120-7
Regular Article
(Assisted) baryon number violation
School of Physics, Indian Institute of Science Education and Research, 695551, Thiruvananthapuram, Kerala, India
Received:
28
August
2023
Accepted:
13
February
2024
Published online:
21
February
2024
Unlike in 4k dimensions, the action of charge conjugation operator in 4k + 2 dimensions preserves spinor chirality. This property, in a generic orbifolded geometry (of scale (1 TeV)) with KK number conservation, leads to baryon number violating operators with KK fermion modes. These exotic operators can be mapped on to the 4D operators responsible for proton decay and hydrogen–antihydrogen oscillation by introducing the KK-1 hypercharge gauge boson interaction. This KK-1 hypercharge gauge boson, being the lightest, is stable and is the ideal dark matter (DM) candidate in the model. Hence, dark matter becomes a crucial ingredient in facilitating the proton decay and
processes. Thus, this model answeres the lack of their evidence in terrestrial experiments owing to the low density of dark matter on Earth. Nevertheless, though terrestrial experiments are not yet sensitive to dark matter influenced baryon number violations, their rates can be substantially enhanced in dense DM clusters at the centre of galaxies.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.