Could SBND-PRISM probe lepton flavor violation?

Author(s)

Alves, Gustavo F. S. ; Funchal, Renata Zukanovich ; Machado, Pedro A. N.

• Document type: Journal article
• Source: PHYSICAL REVIEW D; v. 110, n. 3, p. 7-pg., 2024-08-28.

Abstract

We investigate the possibility of using the Short-Baseline Near Detector (SBND) at Fermilab to constrain lepton flavor violating decays of pions and kaons. We study how to leverage SBND-PRISM, the use of the neutrino beam angular spread to mitigate systematic uncertainties, to enhance this analysis. We show that SBND-PRISM can put stringent limits on the flavor violating branching ratios BR & eth;pi & thorn; -* mu & thorn;nu e & THORN; 1/4 8.9 x 10-4, BR & eth;K & thorn; -* mu & thorn;nu e & THORN; 1/4 3.2 x 10-3, improving previous constraints by factors 9 and 1.25, respectively. We also estimate the SBND-PRISM sensitivity to lepton number violating decays, European Bubble Chamber limits. Last, we identify several ways how the SBND collaboration could improve this analysis. (AU)

• FAPESP's process: 22/10894-8 - Search for dark light mediators with short-baseline detectors at Fermilab
• Grantee: Gustavo Figueiredo Severiano Alves
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 19/04837-9 - Particle Physics Phenomenology
• Grantee: Gustavo Alberto Burdman
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 20/08096-0 - Exploring light dark sectors
• Grantee: Gustavo Figueiredo Severiano Alves
• Support Opportunities: Scholarships in Brazil - Doctorate