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Symmetry
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Symmetry in Dark Matter and Cosmology
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Symmetry in Dark Matter and Cosmology

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 1359

Special Issue Editor

Prof. Dr. Fei Wang

E-Mail Website
Guest Editor
Department of Physics, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, China
Interests: high-energy physics theory; beyond the standard model; baryon synthesis mechanism; dark matter
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Strong astrophysical and cosmological evidence on many scales indicates the existence of non-baryonic dark matter content in our Universe, which constitutes approximately 85 percent of the Universe’s matter density and 26 percent of its total energy density. Dark matter is generally believed to be new particles in new physics beyond the Standard Model, and these must be stable or have a much longer lifetime than the age of the Universe. Many theoretically well-motivated dark matter candidates have been proposed to explain the dark matter related astrophysical evidence, which possibly span an incredible mass range from 10−21 eV to above the Planck scale 1027 eV. Weakly interacting massive particles (WIMPs) between 1 GeV and 100 TeV that interact with the SM particles are the most promising dark matter candidates, for example, the lightest neutralino in supersymmetric (SUSY) models. Understanding the nature of dark matter and the search for dark matter signals are the most important tasks for particle physics and cosmology today.

In this Special Issue, we will focus on both the theoretical and experimental aspects of dark matter, including new proposals/candidates to explain the dark matter puzzle, the general theory and analysis of dark matter, the direct and indirect detections of dark matter particles, the constraints of DM from colliders, the connection of the DM to baryon asymmetry, dark matter related phenomenology, etc.

Prof. Dr. Fei Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • dark matter
  • DM
  • cosmology
  • collider
  • baryon asymmetry

Published Papers (1 paper)

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Research

12 pages, 1727 KiB  
Article
The Phenomenological Research on Higgs and Dark Matter in the Next-to-Minimal Supersymmetric Standard Model
by Zhaoxia Heng, Shenshen Yang, Xingjuan Li and Liangliang Shang
Symmetry 2023, 15(2), 456; https://doi.org/10.3390/sym15020456 - 08 Feb 2023
Cited by 2 | Viewed by 952
Abstract
The Z3-invariant next-to-minimal supersymmetric standard model (NMSSM) can provide a candidate for dark matter (DM). It can also be used to explain the hypothesis that the Higgs signal observed on the Large Hadron Collider (LHC) comes from the contribution of the [...] Read more.
The Z3-invariant next-to-minimal supersymmetric standard model (NMSSM) can provide a candidate for dark matter (DM). It can also be used to explain the hypothesis that the Higgs signal observed on the Large Hadron Collider (LHC) comes from the contribution of the two lightest CP-even Higgs bosons, whose masses are near 125 GeV. At present, XENON1T, LUX, and PandaX experiments have imposed very strict restrictions on direct collision cross sections of dark matter. In this paper, we consider a scenario that the observed Higgs signal is the superposition of two mass-degenerate Higgs in the Z3-invariant NMSSM and scan the seven-dimension parameter space composing of λ,κ,tanβ,μ,Ak,At,M1 via the Markov chain Monte Carlo (MCMC) method. We find that the DM relic density, as well as the LHC searches for sparticles, especially the DM direct detections, has provided a strong limit on the parameter space. The allowed parameter space is featured by a relatively small μ≤300 GeV and about tanβ∈(10,20). In addition, the DM is Higgsino-dominated because of |2κλ|>1. Moreover, the co-annihilation between χ˜10 and χ˜1± must be taken into account to obtain the reasonable DM relic density. Full article
(This article belongs to the Special Issue Symmetry in Dark Matter and Cosmology)
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