Anber, Mohamed M. and Poppitz, Erich (2021) 'Nonperturbative effects in the Standard Model with gauged 1-form symmetry.', Journal of High Energy Physics, 2021 (12). p. 55.
Abstract
We study the Standard Model with gauged Z(1)N=2,3,6 subgroups of its Z(1)6 1-form global symmetry, making the gauge group SU(3)×SU(2)×U(1)ZN. We show that, on a finite T3, there are self-dual instantons of fractional topological charge. They mediate baryon- and lepton-number violating processes. We compare their amplitudes to the ones due to the usual BPST-instantons. We find that the small hypercharge coupling suppresses the fractional-instanton contribution, unless the torus size is taken sub-Planckian, or extra matter is added above the weak scale. We also discuss these results in light of the cosmological bounds on the torus size.
| Item Type: | Article |
|---|---|
| Full text: | (VoR) Version of Record Available under License - Creative Commons Attribution 4.0. Download PDF (430Kb) |
| Status: | Peer-reviewed |
| Publisher Web site: | https://doi.org/10.1007/JHEP12(2021)055 |
| Publisher statement: | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Date accepted: | 27 November 2021 |
| Date deposited: | 27 January 2022 |
| Date of first online publication: | 09 December 2021 |
| Date first made open access: | 27 January 2022 |
Save or Share this output
| Export: | |
| Look up in GoogleScholar |
