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Aiming for Tops of ALPs with a Muon Collider

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arxiv 2310.11018 v1 pith:PHIO4J47 submitted 2023-10-17 hep-ph hep-ex

So Chigusa , Sudhakantha Girmohanta , Yuichiro Nakai , Yufei Zhang This is my paper · ORCID
classification hep-phhep-ex
keywords alpsmuontev-scalecollidersdecayquarkadvantagesaiming
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Future muon colliders with center-of-mass energy of $\mathcal{O}(1-10)$ TeV can provide a clean high-energy environment with advantages in searches for TeV-scale axion-like particles (ALPs), pseudo-Nambu-Goldstone bosons associated with spontaneously broken global symmetries, which are widely predicted in physics beyond the Standard Model (SM). We exploit ALP couplings to SM fermions, and guided by unitarity constraints, build a search strategy focusing on the ALP decay to top quark pairs at muon colliders. It is found that a large parameter space of TeV-scale ALPs with TeV-scale decay constants can be probed by utilizing the ALP-top quark coupling.

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Cited by 1 Pith paper

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  1. New axion contribution to the two-photon decays of neutral pions

    hep-ph 2025-02 conditional novelty 5.0 of 10

    Axion-pion mixing adds a new next-to-leading-order term to the pi0 to gamma gamma decay width that is negligible for standard light axions but may matter for MeV-scale heavy axions.

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