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High Energy Physics - Lattice

arXiv:2111.12125 (hep-lat)
[Submitted on 23 Nov 2021 (v1), last revised 27 Nov 2021 (this version, v2)]

Title:Sp(4) gauge theories and beyond the standard model physics

Authors:Biagio Lucini, Ed Bennett, Jack Holligan, Deog Ki Hong, Ho Hsiao, Jong-Wan Lee, C.-J. David Lin, Michele Mesiti, Maurizio Piai, Davide Vadacchino
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Abstract:We review numerical results for models with gauge group Sp(2N), discussing the glueball spectrum in the large-N limit, the quenched meson spectrum of Sp(4) with Dirac fermions in the fundamental and in the antisymmetric representation and the Sp(4) gauge model with two dynamical Dirac flavours. We also present preliminary results for the meson spectrum in the Sp(4) gauge theory with two fundamental and three antisymmetric Dirac flavours. The main motivation of our programme is to test whether this latter model is viable as a realisation of Higgs compositeness via the pseudo Nambu Goldstone mechanism and at the same time can provide partial top compositeness. In this respect, we report and briefly discuss preliminary results for the mass of the composite baryon made with two fundamental and one antisymmetric fermion (chimera baryon), whose physical properties are highly constrained if partial top compositeness is at work. Our investigation shows that a fully non-perturbative study of Higgs compositeness and partial top compositeness in Sp(4) is within reach with our current lattice methodology.
Comments: Corrected notations in Eq. 1 and redrawn Fig 2, results unchanged; 8 pages, 4 figures, contribution to the proceedings of A Virtual Tribute to Quark Confinement and the Hadron Spectrum (vConf21), August 2nd-6th 2021
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)
Cite as: arXiv:2111.12125 [hep-lat]
  (or arXiv:2111.12125v2 [hep-lat] for this version)
  https://doi.org/10.48550/arXiv.2111.12125
Related DOI: https://doi.org/10.1051/epjconf/202225808003

Submission history

From: Biagio Lucini [view email]
[v1] Tue, 23 Nov 2021 19:48:34 UTC (627 KB)
[v2] Sat, 27 Nov 2021 13:18:03 UTC (626 KB)
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