| Autor: |
Benjamin Lillard, Tim M. P. Tait |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Journal of High Energy Physics, Vol 2018, Iss 11, Pp 1-19 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
1029-8479 |
| DOI: |
10.1007/JHEP11(2018)199 |
| Popis: |
Abstract The strong CP problem is a compelling motivation for physics beyond the Standard Model. The most popular solutions invoke a global U(1)PQ symmetry, but are challenged by quantum gravitational corrections which are thought to be incompatible with global symmetries, arguing that realistic theories contain additional structure. We explore a construction in which the U(1)PQ symmetry is protected to arbitrary order by virtue of a supersymmetric, confining SU(N) L × SU(N) × SU(N) R × U(1) X product gauge group, achieving θ ¯ $$ \left|\overline{\uptheta}\right| $$ < 10−11 for an SU(5) model with f a ≲ 3 × 1011 GeV. This construction leads to low energy predictions such as a U(1) X gauge symmetry, and for X = B − L engineers a naturally O $$ \mathcal{O} $$ (TeV) value for the μ parameter of the MSSM. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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