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Perturbative unitarity constraints on generic vector interactions

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arxiv 2306.11533 v2 pith:5PCHU52P submitted 2023-06-20 hep-ph

Daniele Barducci , Marco Nardecchia , Claudio Toni This is my paper · ORCID
classification hep-ph
keywords constraintsfieldsgenericinteractionsperturbativeunitarityvectorcase
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study perturbative unitarity constraints on generic interactions between fermion and vector fields, which are allowed to have generic quantum numbers under a $\prod_i SU(N_i) \otimes U(1)$ 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.

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Cited by 2 Pith papers

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  1. Double Higgs Production in Vector Boson Fusion at NLO QCD in HEFT

    hep-ph 2025-02 conditional novelty 6.0 of 10

    Full NLO QCD predictions for pp -> hhjj production in VBF with HEFT couplings cλ, cV, c2V, including non-factorising and Higgs-strahlung diagrams, show that some allowed coupling combinations reshape key observables.

  2. Fingerprinting New Physics with Effective Field Theories

    hep-ph 2025-01 conditional novelty 2.0 of 10

    A thesis compiling published SMEFT global fits, automated UV-model constraints, and ML-based unbinned observables, with projections for HL-LHC, FCC-ee, and CEPC.

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