Hidden interactions of sterile neutrinos as a probe for new physics

Author(s)

Tabrizi, Zahra ^{[1, 2]} ; Peres, O. L. G. ^{[1, 3, 2]}

Affiliation

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Sao Paulo - Brazil

^[2] Inst Res Fundamental Sci IPM, Sch Particles & Accelerators, POB 19395-1795, Tehran - Iran

^[3] Abdus Salaam Int Ctr Theoret Phys, Abdus Salam Int Ctr Theoret Phys, I-34010 Trieste - Italy

• Document type: Journal article
• Source: Physical Review D; v. 93, n. 5 MAR 3 2016.
• Web of Science Citations: 2

Abstract

Recent results from neutrino experiments show evidence for light sterile neutrinos which do not have any Standard Model interactions. In this work, we study the hidden interaction of sterile neutrinos with an ``MeV-scale{''} gauge boson (the nu sHI model) with mass M-X and leptonic coupling g'(l). By performing an analysis on the nu sHI model using the data of the MINOS neutrino experiment, we find that the values above G(X)/G(F) = 92.4 are excluded by more than 2 sigma C.L., where G(F) is the Fermi constant and G(X) is the field strength of the nu sHI model. Using this model, we can also probe other new physics scenarios. We find that the region allowed by the (g-2)(mu) discrepancy is entirely ruled out for MX less than or similar to 100 MeV. Finally, the secret interaction of sterile neutrinos has been to solve a conflict between the sterile neutrinos and cosmology. It is shown here that such an interaction is excluded by MINOS for g'(s) > 1.6 x 10(-2). This exclusion, however, does depend on the value of g'(l). (AU)

• FAPESP's process: 12/16389-1 - Neutrino phenomenology
• Grantee: Orlando Luis Goulart Peres
• Support type: Regular Research Grants