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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…
Light composite scalar in twelve-flavor QCD on the lattice
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi +7
Based on lattice simulations using highly improved staggered quarks for twelve-flavor QCD with several bare fermion masses, we observe a flavor-singlet scalar state lighter than th…
The scalar spectrum of many-flavour QCD
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi +7
The LatKMI collaboration is studying systematically the dynamical properties of N_f = 4,8,12,16 SU(3) gauge theories using lattice simulations with (HISQ) staggered fermions. Explo…
Walking signals in Nf=8 QCD on the lattice
Yasumichi Aoki, Tatsumi Aoyama, Masafumi Kurachi +6
We investigate chiral and conformal properties of the lattice QCD with eight flavors (Nf=8) through meson spectrum using the Highly Improved Staggered Quark (HISQ) action. We also…