Indirect constraints on third generation baryon number violation
Abstract The non-observation of baryon number violation suggests that the scale of baryon-number violating interactions at zero temperature is comparable to the GUT scale. However, the pertinent measurements involve hadrons made of the first-generation quarks, such as protons and neutrons. One may t...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP09(2024)090 |
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| author | Martin Beneke Gael Finauri Alexey A. Petrov |
| author_facet | Martin Beneke Gael Finauri Alexey A. Petrov |
| author_sort | Martin Beneke |
| collection | DOAJ |
| description | Abstract The non-observation of baryon number violation suggests that the scale of baryon-number violating interactions at zero temperature is comparable to the GUT scale. However, the pertinent measurements involve hadrons made of the first-generation quarks, such as protons and neutrons. One may therefore entertain the idea that new flavour physics breaks baryon number at a much lower scale, but only in the coupling to a third generation quark, leading to observable baryon-number violating b-hadron decay rates. In this paper we show that indirect constraints on the new physics scale ΛBNV from the existing bounds on the proton lifetime do not allow for this possibility. For this purpose we consider the three dominant proton decay channels p → ℓ + ν ℓ ν ¯ $$ {\ell}^{+}{\nu}_{\ell}\overline{\nu} $$ , p → π + ν ¯ $$ {\pi}^{+}\overline{\nu} $$ and p → π 0 ℓ + mediated by a virtual bottom quark. |
| format | Article |
| id | doaj-art-5809e600f1f345f58c30333c8c3e89c8 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-5809e600f1f345f58c30333c8c3e89c82024-12-08T12:16:39ZengSpringerOpenJournal of High Energy Physics1029-84792024-09-012024912810.1007/JHEP09(2024)090Indirect constraints on third generation baryon number violationMartin Beneke0Gael Finauri1Alexey A. Petrov2Physik Department T31, Technische Universität MünchenPhysik Department T31, Technische Universität MünchenDepartment of Physics and Astronomy, University of South CarolinaAbstract The non-observation of baryon number violation suggests that the scale of baryon-number violating interactions at zero temperature is comparable to the GUT scale. However, the pertinent measurements involve hadrons made of the first-generation quarks, such as protons and neutrons. One may therefore entertain the idea that new flavour physics breaks baryon number at a much lower scale, but only in the coupling to a third generation quark, leading to observable baryon-number violating b-hadron decay rates. In this paper we show that indirect constraints on the new physics scale ΛBNV from the existing bounds on the proton lifetime do not allow for this possibility. For this purpose we consider the three dominant proton decay channels p → ℓ + ν ℓ ν ¯ $$ {\ell}^{+}{\nu}_{\ell}\overline{\nu} $$ , p → π + ν ¯ $$ {\pi}^{+}\overline{\nu} $$ and p → π 0 ℓ + mediated by a virtual bottom quark.https://doi.org/10.1007/JHEP09(2024)090Baryon/Lepton Number ViolationBottom QuarksSMEFT |
| spellingShingle | Martin Beneke Gael Finauri Alexey A. Petrov Indirect constraints on third generation baryon number violation Journal of High Energy Physics Baryon/Lepton Number Violation Bottom Quarks SMEFT |
| title | Indirect constraints on third generation baryon number violation |
| title_full | Indirect constraints on third generation baryon number violation |
| title_fullStr | Indirect constraints on third generation baryon number violation |
| title_full_unstemmed | Indirect constraints on third generation baryon number violation |
| title_short | Indirect constraints on third generation baryon number violation |
| title_sort | indirect constraints on third generation baryon number violation |
| topic | Baryon/Lepton Number Violation Bottom Quarks SMEFT |
| url | https://doi.org/10.1007/JHEP09(2024)090 |
| work_keys_str_mv | AT martinbeneke indirectconstraintsonthirdgenerationbaryonnumberviolation AT gaelfinauri indirectconstraintsonthirdgenerationbaryonnumberviolation AT alexeyapetrov indirectconstraintsonthirdgenerationbaryonnumberviolation |