Lattice study of the scalar and baryon spectra in many-flavor QCD

2015/10/26 by Yasumichi Aoki, Aoki, Yasumichi, Tatsumi Aoyama +21
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph

paper · pdf · doi:10.48550/arxiv.1510.07373

7 pages, 3 figures, Contribution to Sakata Memorial KMI Workshop on "Origin of Mass and Strong Coupling Gauge Theories (SCGT15)", 3-6 March 2015, Nagoya University

arxiv created 2015/10/26 · openalex publication_date 2015/10/26 · arxiv updated 2015/10/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In the search for a composite Higgs boson in walking technicolor models, many flavor QCD, in particular with N_f=8, is an attractive candidate, and has been found to have a composite flavor-singlet scalar as light as the pion. Based on lattice simulations of this theory with the HISQ action, we will present our preliminary results on the scalar decay constant using the fermionic bilinear operator, and on the mass of the lightest baryon state which could be a dark matter candidate. Combining these two results, implications for dark matter direct detection are also discussed.

Related

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• Lattice QCD: Flavor Physics and Spectroscopy