Greljo, Admir; Stangl, Peter; Thomsen, Anders Eller; Zupan, Jure (2022). On (g − 2)μ from gauged U(1)X. Journal of High Energy Physics, 2022(7) Springer 10.1007/JHEP07(2022)098
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We investigate an economical explanation for the (g − 2)μ anomaly with a neutral vector boson from a spontaneously broken U(1)X gauge symmetry. The Standard Model fermion content is minimally extended by 3 right-handed neutrinos. Using a battery of complementary constraints, we perform a thorough investigation of the renormalizable, quark flavor-universal, vector-like U(1)X models, allowing for arbitrary kinetic mixing. Out of 419 models with integer charges not greater than ten, only 7 models are viable solutions, describing a narrow region in model space. These are either Lμ − Lτ or models with a ratio of electron to baryon number close to −2. The key complementary constraints are from the searches for nonstandard neutrino interactions. Furthermore, we comment on the severe challenges to chiral U(1)X solutions and show the severe constraints on a particularly promising such candidate.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Theoretical Physics 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Greljo, Admir, Stangl, Peter Paul, Thomsen, Anders Eller |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Binia Marti |
Date Deposited: |
29 Mar 2023 07:50 |
Last Modified: |
29 Mar 2023 23:28 |
Publisher DOI: |
10.1007/JHEP07(2022)098 |
ArXiv ID: |
2203.13731 |
BORIS DOI: |
10.48350/180852 |
URI: |
https://boris.unibe.ch/id/eprint/180852 |
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