Leptogenesis with triplet scalars at electroweak scale
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866915251197313024 |
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| author | Ghosh, Rituparna Mukhopadhyaya, Biswarup Sarkar, Utpal |
| author_facet | Ghosh, Rituparna Mukhopadhyaya, Biswarup Sarkar, Utpal |
| contents | Up until now the works regarding leptogenesis have discussed different mechanisms to explain the observed baryon asymmetry of the universe (BAU). The type-$II$ seesaw mechanism employing triplet scalars has been well studied in this context and the triplet vacuum expectation value (VEV) answering to the observed BAU is $(< 10^{-2} ~ GeV)$. On the contrary we are invoking an extended Georgi-Machacek type scenario, capable of generating BAU through leptogenesis while keeping the triplet VEV at a moderate range where it plays a nontrivial role in electroweak symmetry breaking (EWSB). In this study we have also considered the decaying scalar mass responsible for leptogenesis to be within a TeV and hence one can probe this possibility at the Large Hadron Collider (LHC) itself via different kinds of signature corresponding to different triplet VEV region. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_06729 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Leptogenesis with triplet scalars at electroweak scale Ghosh, Rituparna Mukhopadhyaya, Biswarup Sarkar, Utpal High Energy Physics - Phenomenology Up until now the works regarding leptogenesis have discussed different mechanisms to explain the observed baryon asymmetry of the universe (BAU). The type-$II$ seesaw mechanism employing triplet scalars has been well studied in this context and the triplet vacuum expectation value (VEV) answering to the observed BAU is $(< 10^{-2} ~ GeV)$. On the contrary we are invoking an extended Georgi-Machacek type scenario, capable of generating BAU through leptogenesis while keeping the triplet VEV at a moderate range where it plays a nontrivial role in electroweak symmetry breaking (EWSB). In this study we have also considered the decaying scalar mass responsible for leptogenesis to be within a TeV and hence one can probe this possibility at the Large Hadron Collider (LHC) itself via different kinds of signature corresponding to different triplet VEV region. |
| title | Leptogenesis with triplet scalars at electroweak scale |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.06729 |