New Higgs-Like States
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: 31 January 2025 | Viewed by 66
Special Issue Editors
Interests: high-energy physics; top quark; standard model; Higgs boson; physics generators and modelling; calorimetry; high energy astrophysics; computational physics
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Special Issue Information
Dear Colleagues,
The LHC experiments at CERN discovered the last missing piece of the standard model (SM), the first ever elementary scalar boson—the Higgs boson. Measurements of its properties and couplings to gauge bosons and fermions at the LHC provide an important test of the spontaneous electroweak symmetry breaking (EWSB) and mass generation of elementary particles in the SM. However, the discovery of the first elementary scalar particle occurred just over 10 years ago. Its couplings to first- and second-generation fermions, Higgs self-coupling, and the Landau–Ginzburg form of the Higgs potential have yet to be verified, and many of its properties have not been measured with sufficient precision to rule out the effect of possible new particles beyond SM.
We do not know if the scalar particle discovered at the LHC is one of a kind or if it is a composite particle. The existence of additional Higgs bosons cannot be excluded by any physics principle, and it depends on the details of the EWSB. Extra Higgs bosons may help solve some of the big questions remaining for particle physics and cosmology such as the matter–antimatter asymmetry, or dark matter, in the Universe. Many searches have been performed at the LEP, the Tevatron, and the LHC colliders for neutral and charged Higgs bosons. Although all of these searches gave negative results, evidence for additional Higgs bosons could still be found at the LHC or future colliders.
The discovery of the Higgs boson at the LHC provides evidence for the superfluid-like nature of the vacuum. With more precise measurements of the Higgs boson properties at the LHC and future colliders, we hope to gain deeper insights into the nature of the electroweak vacuum and the EWSB mechanism. The theory of superconductivity inspired the application of the spontaneous symmetry breaking concept in particle physics. In recent years, it became possible to study the Higgs modes in superconductors. These studies in condensed matter systems may also yield new insights applicable to particle physics, and vice versa.
This Special Issue of Symmetry is devoted to new Higgs-like states in high-energy physics, cosmology, and condensed-matter physics and welcomes original research articles and reviews.
Dr. Efe Yazgan
Dr. Kai-Feng Chen
Guest Editors
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Keywords
- particles and fields
- Higgs boson
- electroweak interactions
- spontaneous symmetrybreaking
- quantum chromodynamics
- quark and lepton masses and mixing
- models beyond the standard model
- experimental methods and instrumentation for elementary-particle and nuclear physics
- data analysis
- extensions of Higgs sector
- Higgs-like states
- phase transitions
- Higgs mode
- top quark
- cosmology
- superconductivity
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