Title: Seesaw scale, unification, and proton decay

Abstract

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.

Authors:

Fileviez Pérez, Pavel; Gross, Axel; Murgui, Clara

Publication Date:

2018-08-23

Research Org.:

Case Western Reserve Univ., Cleveland, OH (United States); Univ. of Valencia (Spain)

Sponsoring Org.:

USDOE Office of Science (SC), High Energy Physics (HEP); European Regional Development Fund (ERDF)

OSTI Identifier:

1466076

Alternate Identifier(s):

OSTI ID: 1503835

Grant/Contract Number:  

SC0018005; FPA2014-53631-C2-1-P; SEV-2014-0398

Resource Type:

Published Article

Journal Name:

Physical Review D

Additional Journal Information:

Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 3; Journal ID: ISSN 2470-0010

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; grand unified models; Majorana neutrinos