Particle Physics and Cosmology: A Themed Issue in Honor of Professor Dimitri Nanopoulos

A special issue of Universe (ISSN 2218-1997).

Deadline for manuscript submissions: 1 September 2024 | Viewed by 919

Special Issue Editors


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Guest Editor
Department of Physics, Henan Normal University, Xinxiang 453007, China
Interests: electroweak symmetry breaking; dark matter; asymmetry of matter and antimatter
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Guest Editor
Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
Interests: gravity; cosmology
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Guest Editor
Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
Interests: particle physics; grand unified theory; string phenomenology; cosmology
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Guest Editor
Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113–0033, Japan
Interests: particle physics; cosmology

Special Issue Information

Dear Colleagues,

Supersymmetry provides a natural solution to the gauge hierarchy problem in the Standard Model (SM). In the supersymmetric SM, we can achieve gauge coupling unification, have a dark matter candidate, and break electroweak gauge symmetry through a radiative process. In particular, gauge coupling unification strongly suggests the Grand Unified Theory (GUT). Also, string theory is a promising candidate for quantum gravity, and the supersymmetric GUT can be constructed from string theory. Moreover, supersymmetry provides a natural framework for inflation. Prof. Dimitri Nanopoulos is one of the leading experts in the world on particle physics, supersymmetry, GUTs, string model building, and cosmology. For example, with various collaborators, he first studied the Higgs production at a hadronic collider via gluon fusion, proposed the flipped SU(5) model and constructed it from string theory, as well as proposed no-scale supergravity and studied its inflation.

This Special Issue is designed in honor of Prof. Dimitri Nanopoulos and to highlight the recent progress in particle physics and cosmology.

Prof. Dr. Jun-Jie Cao
Prof. Dr. Yungui Gong
Prof. Dr. Tianjun Li
Dr. Natsumi Nagata
Guest Editors

Manuscript Submission Information

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Keywords

  • particle physics
  • supersymmetry
  • grand unified theory
  • string model building
  • cosmology

Published Papers (1 paper)

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Research

13 pages, 767 KiB  
Article
Revisiting a Realistic Intersecting D6-Brane with Modified Soft SUSY Terms
by Imtiaz Khan, Waqas Ahmed, Tianjun Li and Shabbar Raza
Universe 2024, 10(4), 176; https://doi.org/10.3390/universe10040176 - 11 Apr 2024
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Abstract
Because there are a few typos in the supersymmetry-breaking sfermion masses and trilinear soft term, regarding the current Large Hadron Collider (LHC) and dark matter searches, we revisit a three-family Pati–Salam model based on intersecting D6-branes in Type IIA string theory on a [...] Read more.
Because there are a few typos in the supersymmetry-breaking sfermion masses and trilinear soft term, regarding the current Large Hadron Collider (LHC) and dark matter searches, we revisit a three-family Pati–Salam model based on intersecting D6-branes in Type IIA string theory on a T6/(Z2×Z2) orientifold with a realistic phenomenology. We study the viable parameter space and discuss the spectrum consistent with the current LHC Supersymmetry searches and the dark matter relic density bounds from the Planck 2018 data. For the gluinos and first two generations of sfermions, we observe that the gluino mass is in the range [2, 14] TeV, the squarks mass range is [2, 13] TeV and the sleptons mass is in the range [1, 5] TeV. We achieve the cold dark matter relic density consistent with 5σ Planck 2018 bounds via A-funnel and coannihilation channels such as stop–neutralino, stau–neutralino, and chargino–neutralino. Except for a few chargino–neutralino coannihilation solutions, these solutions satisfy current nucleon-neutralino spin-independent and spin-dependent scattering cross-sections and may be probed by future dark matter searches. Full article
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