Lattice Studies on 8-Flavor QCD in The Light of Physics Beyond The Standard Model

被引：2

作者：

Aoki, Yasumichi ^{[1
]}

Aoyama, Tatsumi ^{[1
]}

Bennett, Ed ^{[2
]}

Kurachi, Masafumi ^{[3
]}

Maskawa, Toshihide ^{[1
]}

Miura, Kohtaroh ^{[1
,4
]}

Nagai, Kei-ichi ^{[1
]}

Ohki, Hiroshi ^{[5
]}

Rinaldi, Enrico ^{[6
]}

Shibata, Akihiro ^{[7
]}

Yamawaki, Koichi ^{[1
]}

Yamazaki, Takeshi ^{[8
]}

机构：

[1] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, Aichi 4648602, Japan

[2] Swansea Univ, Dept Phys, Singleton Pk, Swansea SA2 8PP, W Glam, Wales

[3] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan

[4] Aix Marseille Univ, CPT, Campus Luminy,Case 907,163 Ave Luminy, F-13288 Marseille 9, France

[5] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[6] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[7] High Energy Accelerator Res Org KEK, Comp Res Ctr, Tsukuba, Ibaraki 3050801, Japan

[8] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

来源：

NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS | 2016年 / 270卷

基金：

日本学术振兴会;

关键词：

Lattice Gauge Theory; Conformal Symmetry; Walking Technicolor Model; Physics Beyond The Standard Model;

D O I：

10.1016/j.nuclphysbps.2016.02.048

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We report the latest results of the LatKMI collaboration on 8-flavor QCD using Monte Carlo simulations of the lattice gauge theory. The subject receives growing interest with regards to physics beyond the Standard Model (BSM). We show that a flavor-singlet scalar meson (sigma) emerges as one of the lightest bound states and can be a composite Higgs boson with mass 125 GeV. The light sigma may be a technidilaton, a pseudo Nambu-Goldstone boson of the approximate scale symmetry, which results from a slowly running (walking) coupling constant associated with an infra-red fixed point. Consistently to this reasoning, a mass anomalous dimension gamma is found to be large gamma similar to 1. We discuss the applicability of 8-flavor QCD to the BSM model building.

引用

页码：242 / 246

页数：5

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