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We explore the possibility of a beyond the standard model scalar ($\phi$) as a possible explanation of the diphoton resonance at 750~GeV invariant mass reported by the ATLAS and CMS collaborations at the large hadron collider (LHC). We…

高能物理 - 唯象学 · 物理学 2016-04-21 Shrihari Gopalakrishna , Tuhin Subhra Mukherjee

Based on a baryonic extended linear sigma model including explicit chiral symmetry breaking effect, the structure of neutron star with the emergence of hyperons is investigated using the relativistic mean field approximation. It's found…

核理论 · 物理学 2025-12-30 Yao Ma , Yong-Liang Ma , Lu-Qi Zhang

A self-consistent holographic QCD model is proposed which can realize both chiral symmetry breaking and confinement, two most important phenomena of QCD. It is pointed out that the model can accommodate both Regge spectra of hadrons and the…

高能物理 - 理论 · 物理学 2013-11-08 Danning Li , Mei Huang , Qi-Shu Yan

We explore the phase structure of a chiral model of constituent quarks and gluons implementing scale symmetry breaking at finite temperature and chemical potential. In this model the chiral dynamics is intimately linked to the trace anomaly…

高能物理 - 唯象学 · 物理学 2015-05-30 Chihiro Sasaki , Igor Mishustin

By using a new parametrization of the dilaton field and including a cubic term in the bulk scalar potential, we realize linear confinement in both meson and nucleon sectors within the framework of soft-wall AdS/QCD. At the same time this…

高能物理 - 唯象学 · 物理学 2010-07-06 Peng Zhang

We use $S_4$ discrete group to construct a neutrino flavour model which leads to $TM_1$ mixing and is consistent with the neutrino oscillation data. Using the model's constrained parameter space, we predict the values of Dirac $CP$ phase…

高能物理 - 唯象学 · 物理学 2020-09-08 Mainak Chakraborty , R. Krishnan , Ambar Ghosal

In this paper we further elaborate on our recently proposed solution to the cosmological constant problem - Phys. Rev. D82 (2010) 044006. One of the elements of the solution is the chameleonic behaviour of the Einstein frame dilaton: the…

高能物理 - 理论 · 物理学 2012-10-18 Andrea Zanzi

We study possible restoration patterns of chiral symmetry in a generalized hidden local symmetry model, which is a low energy effective theory of QCD including pseudo-scalar, vector and axial-vector mesons. We derive Wilsonian…

高能物理 - 唯象学 · 物理学 2009-11-11 Yoshimasa Hidaka , Osamu Morimatsu , Munehisa Ohtani

We study the possibility to observe sterile neutrinos with masses in the range between 5 GeV and 20 GeV at the LHC, using the exclusive semileptonic modes involving pions, namely W to lepton + N to n pions + lepton+lepton (n = 1, 2, 3). The…

高能物理 - 唯象学 · 物理学 2018-03-07 Claudio O. Dib , C. S. Kim , Nicolas A. Neill , Xing-Bo Yuan

Generalized Hidden Local Symmetry (GHLS) model is the chiral model of pseudoscalar, vector, and axial vector mesons and their interactions. It contains also the couplings of strongly interacting particles with electroweak gauge bosons.…

高能物理 - 唯象学 · 物理学 2014-11-21 N. N. Achasov , A. A. Kozhevnikov

The Dirac fermion in the random chiral models is studied which includes the random gauge field model and the random hopping model. We focus on a connection between continuum and lattice models to give a clear perspective for the random…

介观与纳米尺度物理 · 物理学 2008-11-26 Shinsei Ryu , Yasuhiro Hatsugai

Motivated by the interesting features of Two Higgs Doublet Models (2HDM) we present a 2HDM extension where the stability of dark matter, neutrino masses and the absence of flavor changing interactions are explained by promoting baryon and…

高能物理 - 唯象学 · 物理学 2019-06-19 Daniel A. Camargo , Miguel D. Campos , Téssio B. de Melo , Farinaldo S. Queiroz

We present successful lepton mass matrices with an inverted mass hierarchy for neutrinos, which follow from a geometrical structure of a (1+5) dimensional space-time where two extra dimensions are compactified on the T^2/Z_3 orbifold. A 5^*…

高能物理 - 唯象学 · 物理学 2009-11-11 M. Tanimoto , T. Yanagida

We discuss the connection between observable CP violation in the lepton sector, the properties of heavy neutrinos and the baryon asymmetry of the universe in the minimal seesaw model. A measurement of the Dirac phase $\delta$ would allow to…

高能物理 - 唯象学 · 物理学 2016-11-28 Marco Drewes , Bjorn Garbrecht , Dario Gueter , Juraj Klaric

We establish a hybrid seesaw mechanism to explain small neutrino masses and predict cold dark matter candidate in the context of the B-L gauge symmetry extension of the Standard Model. In this model a new scalar doublet and two new fermion…

高能物理 - 唯象学 · 物理学 2015-03-13 Tong Li , Wei Chao

In the context of an nonuniversal $U(1)'$ extension of the standard model free from anomalies, we introduce a complex scalar singlet candidate to be dark matter. In addition, an extra scalar doublet and a heavy scalar singlet are required…

高能物理 - 唯象学 · 物理学 2015-08-28 R. Martinez , J. Nisperuza , F. Ochoa , J. P. Rubio , C. F. Sierra

The neutrinophilic two Higgs doublet model is one of the simplest models to explain the origin of tiny Dirac neutrino masses. This model introduces a new Higgs doublet with eV scale VEV to naturally generate the tiny neutrino masses.…

高能物理 - 唯象学 · 物理学 2023-11-14 Wan-Lun Xu , Zhi-Long Han , Yi Jin , Honglei Li , Zongyang Lu , Zhao-Xia Meng

At zero temperature the negative-parity ground states of the nucleon and delta baryons are non-degenerate with the positive-parity partners due to spontaneous breaking of chiral symmetry. However, chiral symmetry is expected to be restored…

高能物理 - 格点 · 物理学 2016-10-25 Gert Aarts , Chris Allton , Davide De Boni , Simon Hands , Benjamin Jaeger , Chrisanthi Praki , Jon-Ivar Skullerud

Both the ATLAS and CMS experiments at the LHC have reported the observation of the particle of mass around 125GeV which is consistent to the Standard Model (SM) Higgs boson, but with an excess of events beyond the SM expectation in the…

高能物理 - 唯象学 · 物理学 2013-03-06 Tomohiro Abe , Ryuichiro Kitano , Yasufumi Konishi , Kin-ya Oda , Joe Sato , Shohei Sugiyama

In the lecture we review several issues related to recent development in non-perturbative QCD. The ``instanton liquid model'' reproduces not only the basic vacuum parameters (the condensates), but even hadronic correlators. New information…

高能物理 - 唯象学 · 物理学 2007-05-23 E. V. Shuryak