One-loop considerations for coexisting vacua in the CP conserving 2HDM

Author(s)

Cherchiglia, A. L. ; Nishi, C. C.

• Document type: Journal article
• Source: Journal of High Energy Physics; v. N/A, n. 11, p. 35-pg., 2017-11-17.

Abstract

The Two-Higgs-Doublet model (2HDM) is a simple and viable extension of the Standard Model with a scalar potential complex enough that two minima may coexist. In this work we investigate if the procedure to identify our vacuum as the global minimum by tree-level formulas carries over to the one-loop corrected potential. In the CP conserving case, we identify two distinct types of coexisting minima - the regular ones (moderate tan beta) and the non-regular ones (small or large tan beta) - and conclude that the tree level expectation fails only for the non-regular type of coexisting minima. For the regular type, the sign of m(12)(2) already precisely indicates which minima is the global one, even at one-loop. (AU)

• FAPESP's process: 14/19164-6 - Challenges in the 21st century in neutrino physics and astrophysics
• Grantee: Orlando Luis Goulart Peres
• Support Opportunities: Special Projects
• FAPESP's process: 13/22079-8 - Physics of particles and fields: standard model and its extensions
• Grantee: Adriano Antonio Natale
• Support Opportunities: Research Projects - Thematic Grants