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arXiv · 2412.06471

Determination of the pseudoscalar decay constant from SU(2) with two fundamental flavors

Laurence Sebastian Bowes·Vincent Drach·Patrick Fritzsch·Sofie Martins·Antonio Rago·Fernando Romero-López
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Abstract

The SU(2) gauge group with two fundamental flavors is a candidate for a composite Higgs extension of the Standard Model. Central to Higgs phenomenology is a non-perturbative determination of observables of the theory, such as the decay constant of the pseudo-Nambu-Goldstone Bosons. We present preliminary results for the continuum limit of the pseudoscalar decay constant using a mixed-action setup, with non-perturbatively improved stabilized Wilson Fermions on the sea, and maximally twisted valence quarks. Pivotal to this study is the recent porting of our simulation suite HiRep to GPU architecture.

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Laurence Sebastian Bowes, Vincent Drach, Patrick Fritzsch, Sofie Martins, Antonio Rago, Fernando Romero-López. 2024-12-09. Determination of the pseudoscalar decay constant from SU(2) with two fundamental flavors. https://arxiv.org/abs/2412.06471

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