Repercussions of dimension five nonminimal couplings in the electroweak model

We propose two possibilities of CPT-odd, dimension five and Lorentz-violating (LV) nonminimal couplings in the Electroweak model. These gauge-invariant terms couple a fixed LV 4-vector to the electroweak field strengths. After finding the LV contributions to the electroweak currents, we evaluate the...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-01, Vol.952 (1), p.12019
Main Authors: Mouchrek-Santos, Victor E, Ferreira, Manoel M
Format: Article
Language:English
Subjects:
Couplings
Decay rate
Electroweak model
Physics
Upper bounds
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Summary:We propose two possibilities of CPT-odd, dimension five and Lorentz-violating (LV) nonminimal couplings in the Electroweak model. These gauge-invariant terms couple a fixed LV 4-vector to the electroweak field strengths. After finding the LV contributions to the electroweak currents, we evaluate the decay rate for the vector mediators W and Z. Using the known experimental uncertainty in these decay rates, upper bounds at the level of 10−15 (eV)−1 and 10−14 (eV)−1 are imposed on the magnitude of the proposed nonminimal interactions.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/952/1/012019