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A second rank antisymmetric tensor field is proposed as an alternative to the Higgs scalar. No mass term is allowed by the symmetries. At the scale where the asymptotically free chiral couplings of the fermions grow large, condensates of…

High Energy Physics - Phenomenology · Physics 2016-05-10 C. Wetterich

In cases of both abelian and nonabelian gauge groups, we consider the Higgs mechanism in topologically massive gauge theories in an arbitrary space-time dimension. It is shown that the presence of a topological term makes it possible to…

High Energy Physics - Theory · Physics 2009-11-07 Ichiro Oda

We derive the general structure of dimension-six derivative interactions in the N Higgs doublet models, where Higgs fields arise as pseudo Nambu-Goldstone modes of a strongly interacting sector. We show that there are several relations…

High Energy Physics - Phenomenology · Physics 2012-04-26 Yohei Kikuta , Yasuhiro Okada , Yasuhiro Yamamoto

In cases of both abelian and nonabelian gauge groups, we study the Higgs mechanism in the topologically massive gauge theories in an arbitrary space-time dimension. We show that when the conventional Higgs potential coexists with a…

High Energy Physics - Theory · Physics 2011-07-19 Ichiro Oda

We investigate the scenario where the Standard Model is extended with classical scale invariance, which is broken by chiral symmetry breaking and confinement in a new strongly-coupled gauge theory that resembles QCD. The Standard Model…

High Energy Physics - Phenomenology · Physics 2017-06-21 Naoyuki Haba , Toshifumi Yamada

The chiral nonlinear ($\sigma,\pi,\omega$) mean-field model is an extension of the conserving nonlinear (nonchiral) $\sigma$-$\omega$ hadronic mean-field model which is thermodynamically consistent, relativistic and Lorentz-covariant…

Nuclear Theory · Physics 2010-11-24 Schun T. Uechi , Hiroshi Uechi

After giving a short introduction to the Nambu-Jona-Lasinio model with an anomaly term, we show the importance of the scalar-scalar correlation in the low-energy hadron dynamics, which correlation may be summarized by a scalar-isoscalar…

High Energy Physics - Phenomenology · Physics 2016-09-01 Teiji Kunihiro

We propose a bi-local representation in noncommutative field theory. It provides a simple description for high momentum degrees of freedom. It also shows that the low momentum modes can be well approximated by ordinary local fields. Long…

High Energy Physics - Theory · Physics 2009-10-31 Satoshi Iso , Hikaru Kawai , Yoshihisa Kitazawa

By combining the generalized exterior algebra of forms over a noncommutative algebra with the gauging of discrete directions and the associated Higgs fields, we consider the construction of the bosonic sector of left-right symmetric models…

High Energy Physics - Phenomenology · Physics 2009-10-22 B. E. Hanlon , G. C. Joshi

We consider a Composite Higgs Model (CHM) with two isospin doublet Higgs fields arising as pseudo Nambu-Goldstone bosons from a ${\rm SO}(6)\to {\rm SO}(4)\times {\rm SO}(2)$ breaking. The main focus of this work is to explicitly compute…

High Energy Physics - Phenomenology · Physics 2018-12-26 Stefania De Curtis , Luigi Delle Rose , Stefano Moretti , Kei Yagyu

The Higgs phenomenon occurs in theories of gravity in which the connection is an independent dynamical variable. The role of order parameters is played by the soldering form and a fiber metric. The breaking of the original gauge symmetry is…

High Energy Physics - Theory · Physics 2009-11-13 R. Percacci

In this publication we present an extension of the Standard Model within the framework of Connes' noncommutative geometry [1]. The model presented here is based on a minimal spectral triple [7] which contains the Standard Model particles,…

High Energy Physics - Theory · Physics 2013-04-02 Christoph A. Stephan

We consider Mirror Twin Higgs models in which the breaking of the global symmetry is realized linearly. In this scenario, the radial mode in the Higgs potential is present in the spectrum, and constitutes a second portal between the twin…

High Energy Physics - Phenomenology · Physics 2018-03-28 Zackaria Chacko , Can Kilic , Saereh Najjari , Christopher B. Verhaaren

We investigate composite two Higgs doublet models realized as pseudo Goldstone modes, generated through the spontaneous breaking of a global symmetry due to strong dynamic at the TeV scale. A detailed comparative survey of two possible…

High Energy Physics - Phenomenology · Physics 2015-06-05 Enrico Bertuzzo , Tirtha Sankar Ray , Hiroshi de Sandes , Carlos A. Savoy

We study a semi-local Abelian Higgs sigma model with $\mathbb{CP}^2$-valued scalar fields coupled to gravity. We establish the conditions needed for self-duality in this system and obtain cosmic strings, both of self-dual character and out…

High Energy Physics - Theory · Physics 2020-12-30 A. Alonso-Izquierdo , W. García Fuertes , J. Mateos Guilarte

Composite Higgs models are an intriguing scenario in which the Higgs particle is identified as a pseudo Nambu-Goldstone boson associated with spontaneous breaking of some global symmetry above the electroweak scale. They would predict new…

High Energy Physics - Phenomenology · Physics 2015-03-17 Shinya Kanemura , Kunio Kaneta , Naoki Machida , Tetsuo Shindou

We report the recent results from the computer simulations of a fermion-gauge-scalar model with dynamical chiral-symmetry breaking and chiral transition induced by the scalar field. This model might be considered to be a possible…

High Energy Physics - Lattice · Physics 2015-06-25 Xiang-Qian Luo , Wolfgang Franzki

We discuss the effective field theory for spacetime symmetry breaking from the local symmetry point of view. By gauging spacetime symmetries, the identification of Nambu-Goldstone (NG) fields and the construction of the effective action are…

High Energy Physics - Theory · Physics 2015-11-10 Yoshimasa Hidaka , Toshifumi Noumi , Gary Shiu

We propose a novel process where singly charged Higgs bosons are produced in a same-sign pair via vector boson fusion at hadron colliders in two Higgs doublet models. The process directly relates to the global symmetry structure of the…

High Energy Physics - Phenomenology · Physics 2019-08-14 Masashi Aiko , Shinya Kanemura , Kentarou Mawatari

I give a summary review of the research program using noncommutative geometry as a framework to determine the structure of space-time. Classification of finite noncommutative spaces under few assumptions reveals why nature chose the…

High Energy Physics - Theory · Physics 2019-02-25 Ali H. Chamseddine