TY  - JOUR
AU  - Husek, T.
AU  - Monsalvez-Pozo, K.
AU  - Portoles, J.
PY  - 2022
DA  - 2022//
TI  - Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 165
EP  - 31pp
VL  - 04
IS  - 4
PB  - Springer
KW  - Beyond Standard Model
KW  - Effective Field Theories
AB  - Leptoquarks are ubiquitous in several extensions of the Standard Model and seem to be able to accommodate the universality-violation-driven B-meson-decay anomalies and the (g-2)(mu) discrepancy interpreted as deviations from the Standard Model predictions. In addition, the search for lepton-flavour violation in the charged sector is, at present, a major research program that could also be facilitated by the dynamics generated by leptoquarks. In this article, we consider a rather wide framework of both scalar and vector leptoquarks as the generators of lepton-flavour violation in processes involving the tau lepton. We single out its couplings to leptoquarks, thus breaking universality in the lepton sector, and we integrate out leptoquarks at tree level, generating the corresponding dimension-6 operators of the Standard Model Effective Field Theory. In ref. [1] we obtained model-independent bounds on the Wilson coefficients of those operators contributing to lepton-flavour-violating hadron tau decays and l-tau conversion in nuclei, with l = e, mu. Hence, we use those results to translate the bounds into the couplings of leptoquarks to the Standard Model fermions.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2111.06872
UR  - https://doi.org/10.1007/JHEP04(2022)165
DO  - 10.1007/JHEP04(2022)165
LA  - English
N1  - WOS:000788594400008
ID  - Husek_etal2022
ER  -