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- Title
Beyond oblique contributions: Δr and W-mass in models with scalar leptoquarks.
- Authors
Marzo, Carlo
- Abstract
In this paper, we study the dominant nonuniversal contributions to muon decay for the five scalar leptoquarks (LQs) allowed by the Standard Model gauge symmetries. By using a common computational framework, we isolate the New-Physics (NP) one-loop corrections over the observable Δ r and explore the connection with the W boson mass. We highlight the role of nonuniversal terms considering, for the SU (2) doublet and triplet LQs, a completely degenerate scenario, thus cancelling/moderating the effects of the oblique parameters S, T and U. We determine simple formulas that exhibit the leading nonuniversal behavior generated by the introduction of extra Yukawa terms and confront them against a present tension in M W and the projected FCC-ee accuracy.
- Subjects
LEPTOQUARKS; STANDARD model (Nuclear physics); GAUGE symmetries; BOSONS; MUONS; ELECTROWEAK interactions
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2023, Vol 38, Issue 35/36, p1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X23400055