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Composite flavor-singlet scalar in twelve-flavor QCD
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi +8
We report the calculation of the flavor-singlet scalar in the SU(3) gauge theory with the degenerate twelve fermions in the fundamental representation using a HISQ-type action at a…
Gluonic observables and the scalar spectrum of twelve-flavour QCD
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi +8
We measure glueball masses and the string tension in twelve-flavour QCD, aiming at comparing the emerging gluonic spectrum to the mesonic one. When approaching the critical surface…
A light composite scalar in eight-flavor QCD on the lattice
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi +8
In search for a composite Higgs boson (techni-dilaton) in the walking technicolor, we present our preliminary results on the first observation of a light flavor-singlet scalar in a…
Neutrino spectral density at electroweak scale temperature
Kohtaroh Miura, Yoshimasa Hidaka, Daisuke Satow +1
Motivated by the scenario of resonant leptogenesis in which lepton number creation in the electroweak-scale is relevant, we investigate the spectral properties and possible collect…