Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes
(2022) In Journal of High Energy Physics 2022(4).- Abstract
- 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)μ 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... (More)
- 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)μ 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–τ conversion in nuclei, with ℓ = e, μ. Hence, we use those results to translate the bounds into the couplings of leptoquarks to the Standard Model fermions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/51b9db3e-8937-4a19-b74f-d7e6fe007d87
- author
- Husek, Tomáš LU ; Monsálvez-pozo, Kevin and de València, Universitat
- organization
- publishing date
- 2022-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of High Energy Physics
- volume
- 2022
- issue
- 4
- article number
- 165
- publisher
- Springer
- external identifiers
-
- scopus:85128969314
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP04(2022)165
- language
- English
- LU publication?
- yes
- id
- 51b9db3e-8937-4a19-b74f-d7e6fe007d87
- alternative location
- https://link.springer.com/10.1007/JHEP04(2022)165
- date added to LUP
- 2022-04-29 23:54:45
- date last changed
- 2024-04-18 05:18:19
@article{51b9db3e-8937-4a19-b74f-d7e6fe007d87,
abstract = {{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)μ 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–τ conversion in nuclei, with ℓ = e, μ. Hence, we use those results to translate the bounds into the couplings of leptoquarks to the Standard Model fermions.}},
author = {{Husek, Tomáš and Monsálvez-pozo, Kevin and de València, Universitat}},
issn = {{1029-8479}},
language = {{eng}},
number = {{4}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes}},
url = {{http://dx.doi.org/10.1007/JHEP04(2022)165}},
doi = {{10.1007/JHEP04(2022)165}},
volume = {{2022}},
year = {{2022}},
}