Proton Decay, Yukawa Couplings and Underlying Gauge Symmetry in String Theory
| dc.creator | Tatar, Radu | |
| dc.creator | Watari, Taizan | |
| dc.date | 2006-02-23 | |
| dc.date | 2006-03-20 | |
| dc.date.accessioned | 2026-07-07T10:46:03Z | |
| dc.date.available | 2026-07-07T10:46:03Z | |
| dc.description | In string theory, massless particles often originate from a symmetry breaking of a large gauge symmetry G to its subgroup H. The absence of dimension-4 proton decay in supersymmetric theories suggests that (\bar{D},L) are different from \bar{H}(\bar{\bf 5}) in their origins. In this article, we consider a possibility that they come from different irreducible components in $\mathfrak{g}/\mathfrak{h}$. Requiring that all the Yukawa coupling constants of quarks and leptons be generated from the super Yang--Mills interactions of G, we found in the context of Georgi--Glashow H=SU(5) unification that the minimal choice of G is E_7 and E_8 is the only alternative. This idea is systematically implemented in Heterotic String, M theory and F theory, confirming the absence of dimension 4 proton decay operators. Not only H=SU(5) but also G constrain operators of effective field theories, providing non-trivial information. | |
| dc.description | 73 pages | |
| dc.identifier | https://arxiv.org/abs/hep-th/0602238 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0602238 | |
| dc.identifier | Nucl.Phys.B747:212-265,2006 | |
| dc.identifier | doi:10.1016/j.nuclphysb.2006.04.025 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183108 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Proton Decay, Yukawa Couplings and Underlying Gauge Symmetry in String Theory | |
| dc.type | text |