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A rigorous thermodynamic analysis has been done at the apparent horizon of a spatially flat Friedmann-Lemaitre-Robertson-Walker universe for the gravitationally induced particle creation scenario with constant specific entropy and an…

General Relativity and Quantum Cosmology · Physics 2019-10-24 Subhajit Saha , Anindita Mondal

New stable particles with fairly low masses could exist if the coupling to the Standard Model is weak, and with suitable parameters they might be possible to produce at the LHC. Here we study a selection of models with the new particles…

High Energy Physics - Phenomenology · Physics 2011-06-13 Morgan Svensson Seth

We argue that the highly studied black hole signatures based on thermal multiparticle final states are very unlikely and only occur in a very limited parameter regime if at all. However, we show that if the higher-dimensional quantum…

High Energy Physics - Phenomenology · Physics 2009-09-15 Patrick Meade , Lisa Randall

We study the discovery potential of the $cg \to tA\to tZH$ process at the LHC, where $A$ and $H$ are CP-odd and even exotic scalars, respectively. The context is the general Two Higgs Doublet Model, where $cg \to tA$ is induced by the…

High Energy Physics - Phenomenology · Physics 2020-02-12 Wei-Shu Hou , Tanmoy Modak

The property of extended longitudinal scaling of rapidity distributions was noticed recently over a broad range of beam energies. It is shown here that this property is consistent with predictions of the statistical thermal model up to the…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Cleymans , J. Strümpfer , L. Turko

The discovery of the Higgs boson at the LHC has opened the door to clarify the mechanism of electroweak symmetry breaking and the origin of masses of particles. The Higgs sector in the SM is the simplest but has no theoretical principle, so…

High Energy Physics - Phenomenology · Physics 2022-03-02 Shinya Kanemura

Microscopic calculations of central collisions between heavy nuclei are used to study fragment production and the creation of collective flow. It is shown that the final phase space distributions are compatible with the expectations from a…

Many models possess unwanted relics, which should be diluted by entropy production just before the big-bang nucleosynthesis. A field responsible for the entropy production may produce stable weakly interacting massive particles, if…

High Energy Physics - Phenomenology · Physics 2009-10-31 Takaaki Nagano , Masahiro Yamaguchi

The LHC will be a top-quark factory. With 80 million pairs of top quarks and an additional 34 million single tops produced annually at the designed high luminosity, the properties of this particle will be studied to a great accuracy. The…

High Energy Physics - Phenomenology · Physics 2009-01-06 Tao Han

In this paper, we study the thermodynamical properties of the (2+1)dimensional black hole with a non-linear electrodynamics and without cosmological constant using the Generalized Uncertainty Principle (GUP). This approach shows that there…

General Relativity and Quantum Cosmology · Physics 2011-07-19 Alexis Larranaga

Tackling the low-temperature fate of supercooled liquids is challenging due to the immense timescales involved, which prevent equilibration and lead to the operational glass transition. Relating glassy behaviour to an underlying,…

Statistical Mechanics · Physics 2017-08-16 Francesco Turci , C. Patrick Royall , Thomas Speck

Black hole production at the Large Hadron Collider (LHC) is an interesting consequence of TeV-scale gravity models. The predicted values, or lower limits, for the fundamental Planck scale and number of extra dimensions will depend directly…

High Energy Physics - Phenomenology · Physics 2010-11-03 Douglas M. Gingrich

These days, as high energy particle colliders become unavailable for testing speculative theoretical ideas, physicists are looking to other environments that may provide extreme conditions where theory confronts physical reality. One such…

High Energy Physics - Theory · Physics 2016-09-06 R. Jackiw

In this work, we investigate a scenario in which heavy Majorana Right-Handed Neutrinos (RHNs) are in thermal equilibrium with a dark sector with temperature higher than the Standard Model (SM) thermal bath. Specifically, we consider the…

High Energy Physics - Phenomenology · Physics 2018-04-03 Nicolás Bernal , Chee Sheng Fong

The production of light (anti-)(hyper-)nuclei in heavy-ion collisions at the LHC is considered in the framework of the Saha equation, making use of the analogy between the evolution of the early universe after the Big Bang and that of…

High Energy Physics - Phenomenology · Physics 2019-12-10 Volodymyr Vovchenko , Kai Gallmeister , Jürgen Schaffner-Bielich , Carsten Greiner

Topological defects can have significant cosmological consequences, so their production must be examined carefully. It is usually assumed that topological defects are produced if the temperature becomes sufficiently high, but in reality…

High Energy Physics - Phenomenology · Physics 2026-01-19 Junseok Lee , Kai Murai , Kazunori Nakayama , Fuminobu Takahashi

Thermal freeze-out offers an attractive explanation of the dark matter density free from fine-tuning of initial conditions. For dark matter with a mass below tens of MeV, photons, electrons, and neutrinos are the only available direct…

High Energy Physics - Phenomenology · Physics 2024-05-10 Xiaoyong Chu , Josef Pradler

We study the issue of temperature in a steady system around a black hole event horizon, contrasting it with the appearance of divergence in a thermal equilibrium system. We focus on a spherically symmetric system governed by general…

General Relativity and Quantum Cosmology · Physics 2024-01-04 Hyeong-Chan Kim

Electroweak symmetry non-restoration up to high temperatures well above the electroweak scale offers new alternatives for baryogenesis. We propose a new approach for electroweak symmetry non-restoration via an inert Higgs sector that…

High Energy Physics - Phenomenology · Physics 2021-09-22 Marcela Carena , Claudius Krause , Zhen Liu , Yikun Wang

The dark matter may be a composite particle that is accessible via a weakly coupled portal. If these hidden-sector states are produced at the Large Hadron Collider (LHC), they would undergo a QCD-like shower. This would result in a spray of…

High Energy Physics - Phenomenology · Physics 2015-10-28 Timothy Cohen , Mariangela Lisanti , Hou Keong Lou
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