We study perturbative unitarity constraints on generic interactions between fermion and vector fields, which are allowed to have generic quantum numbers under a SU(N)⊗U(1) group. We derive compact expressions for the bounds on the couplings for the cases where the fields transform under the trivial, fundamental or adjoint representation of the various, considering both the case of a complex vector arbitrary interactions with fermionic current and also the case of vectors arising as gauge fields. We apply our results to some specific NP models showing the constraints that can be derived using the tool of perturbative unitarity.

Perturbative unitarity constraints on generic vector interactions / Barducci, Daniele; Nardecchia, Marco; Toni, Claudio. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2023:9(2023). [10.1007/JHEP09(2023)134]

Perturbative unitarity constraints on generic vector interactions

Barducci, Daniele;Nardecchia, Marco;Toni, Claudio
2023

Abstract

We study perturbative unitarity constraints on generic interactions between fermion and vector fields, which are allowed to have generic quantum numbers under a SU(N)⊗U(1) group. We derive compact expressions for the bounds on the couplings for the cases where the fields transform under the trivial, fundamental or adjoint representation of the various, considering both the case of a complex vector arbitrary interactions with fermionic current and also the case of vectors arising as gauge fields. We apply our results to some specific NP models showing the constraints that can be derived using the tool of perturbative unitarity.
2023
unitary constraints, quantum field theory
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Perturbative unitarity constraints on generic vector interactions / Barducci, Daniele; Nardecchia, Marco; Toni, Claudio. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2023:9(2023). [10.1007/JHEP09(2023)134]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1692514
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