Seesaw scale, unification, and proton decay

Journal Article · 23 August 2018 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.98.035032 · OSTI ID:1466076

Fileviez Pérez, Pavel ^[1]; Gross, Axel ^[1]; Murgui, Clara ^[2]

---

1. Case Western Reserve Univ., Cleveland, OH (United States). Physics Dept. Center for Education and Research in Cosmology and Astrophysics (CERCA)
2. Univ. of Valencia (Spain). Dept. of Theoretical Physics

We investigate a simple realistic grand unified theory based on the $SU(5)$ gauge symmetry, which predicts an upper bound on the proton decay lifetime for the channels $$p{\rightarrow}{K}^{+}\overline{{\nu}}$$ and $$p{\rightarrow}{{\pi}}^{+}\overline{{\nu}}$$, i.e., $${\tau}(p{\rightarrow}{K}^{+}\overline{{\nu}}){\lesssim}3.4\times{}{10}^{35}$$ and $${\tau}(p{\rightarrow}{{\pi}}^{+}\overline{{\nu}}){\lesssim}1.7\times{}{10}^{34}\text{ }\text{ }\mathrm{years}$$, respectively. In this context, the neutrino masses are generated through the type I and type III seesaw mechanisms, and one predicts that the field responsible for type III seesaw must be light with a mass below 500 TeV. We discuss the testability of this theory at current and future proton decay experiments.

• Research Organization: Case Western Reserve Univ., Cleveland, OH (United States); Univ. of Valencia (Spain)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); European Regional Development Fund (ERDF)
• Grant/Contract Number: SC0018005; FPA2014-53631-C2-1-P; SEV-2014-0398
• OSTI ID: 1466076
• Alternate ID(s): OSTI ID: 1503835
• Journal Information: Physical Review. D., Vol. 98, Issue 3; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English