Article
Physics, Particles & Fields
Gregory J. Loges, Gary Shiu
Summary: Enumerating the number and properties of string vacua is crucial for understanding their possibilities and universality. In this study, we successfully counted the distinct intersecting brane vacua in a specific scenario using dynamic programming. The distribution of certain characteristics of these vacua was also presented. These methods can be applied to other corners of the landscape.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Thomas G. Rizzo, George N. Wojcik
Summary: Toy models for the 5-D analog of the kinetic mixing/vector portal scenario were investigated, with dark matter and the dark Higgs now both localized to the 'dark' brane while only the dark photon remains a 5-D field. The phenomenology of this setup was explored and compared to previous, more complex models in both flat and warped extra dimensions.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Ricardo Cepedello, Fabian Esser, Martin Hirsch, Veronica Sanz
Summary: This study examines the ultraviolet completions of d = 6 four-fermion operators in the Standard Model Effective Field Theory (SMEFT) with a focus on models containing cold dark matter candidates. By using a diagrammatic method, the study systematically generates lists of potential ultraviolet completions, aiming to provide complete sets of models under specific assumptions. These lists rediscover many known dark matter models, such as R-parity conserving supersymmetry or the scotogenic neutrino mass model, and also introduce new constructions that have not yet been studied. The study also briefly discusses how these dark matter models could be constrained by reinterpretation of LHC searches and the prospects for HL-LHC and future lepton colliders.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Cao H. Nam
Summary: Based on the swampland program, this study suggests that if this program is true, the brane-world scenario with branon dark matter would be ruled out. The constraints of quantum gravity imply that the branons must be absorbed by the KK gauge bosons, which leads to a geometric unification of gravity and dark matter. The KK gauge boson dark matter provides a promising observation window to search for weakly interacting dark matter in the cosmic microwave background and primordial gravitational waves.
Article
Physics, Particles & Fields
Mariana Frank, Yasar Hicyilmaz, Subhadeep Mondal, Ozer Ozdal, Cem Salih Un
Summary: Researchers attribute deviations of the muon and electron magnetic moments from theoretical predictions to an additional U(1)' supersymmetric model, suggesting that discrepancies between the muon and electron anomalous magnetic moments are due to non-universal U(1)' charges. They demonstrate that in a minimally extended model, constraints are imposed on the model's spectrum by requiring both deviations to be satisfied, particularly on dark matter candidates and slepton masses. By choosing three benchmarks with distinct dark matter features, implications of the model at colliders are studied, focusing on variables that can distinguish their non-universal scenario from other U(1)' implementations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yang Xiao, Jin Min Yang, Yang Zhang
Summary: We study the dilution of dark matter relic density caused by the electroweak first-order phase transition in singlet extension models, including the singlet extension of the standard model, the two-Higgs-doublet model, and the next-to-minimal supersymmetric standard model. We find that the entropy released by the strong electroweak phase transition can at most dilute the dark matter density to 1/3. However, in the singlet extension models relevant to the phase transition temperature, the strong phase transition always occurs before the freeze-out of dark matter, making the dilution effect negligible for the current dark matter density. We derive bounds on the freeze-out temperature and nucleation temperature in the singlet extension of the standard model. On the other hand, in the two-Higgs-doublet model where the freeze-out temperature of dark matter is independent of the phase transition, the dilution effect may salvage some parameter space that is excluded by excessive dark matter relic density or direct detections.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Rouzbeh Allahverdi, Igor Brockel, Michele Cicoli, Jacek K. Osinski
Summary: Explicit string models face challenges in realizing inflation and low-energy supersymmetry, but early matter domination driven by string moduli can potentially alter dark matter abundance and imply superheavy neutralino dark matter with mass around 10(10)-10(11) GeV, which may help explain recent ultra-high-energy neutrino detections by IceCube and ANITA through dark matter decay.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Santiago Duque-Escobar, Daniel Ocampo-Henao, Jose D. Ruiz-Alvarez
Summary: In this paper, we investigate the potential searches at colliders using Vector Boson Fusion topology in Simplified Models signatures. We analyze the physics reach of these searches compared to monojet-type searches and determine their complementarity. We identify the generic characteristics of dark matter signatures at the LHC if the underlying physics involves Vector Boson Fusion production.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Multidisciplinary
M. S. Cunha, G. Alencar, C. R. Muniz, V. B. Bezerra, H. S. Vieira
Summary: In this paper, we study static black string solutions in 3+1 dimensions with axisymmetric dark matter distributions. Two different scenarios, isotropic and radial orbits, are considered, and each solution is regulated by two dark matter parameters. Both solutions approach the usual static and uncharged black string vacuum solution predicted by General Relativity asymptotically, and they have larger event horizons compared to the vacuum solution. However, the presence of dark matter leads to singularities at the symmetry axis of these solutions. We calculate the Hawking temperatures of the black string horizons and analyze the effects of dark matter on the occurrence of mass remnants with vanishing Hawking temperature. Thermodynamic quantities such as entropy, heat capacity, and free energy per unit length are also calculated and discussed.
Article
Astronomy & Astrophysics
Pritam Das, Najimuddin Khan
Summary: We propose a new physics model that extends the Standard Model (SM) by introducing hyperchargeless Y=0 triplet fermions and a Higgs triplet with hypercharge Y=2. This model provides a unified framework for explaining neutrino mass and mixing, dark matter, baryogenesis, inflation, and the reheating temperature of the Universe. The model predicts that the two Z2 even neutral fermions explain neutrino low energy variables, while the third Z2 odd fermion triplet serves as a viable dark matter candidate and the scalar triplet acts as the inflaton. Reheating analysis shows that the triplet fermions associated with the Z2 even sector can explain the observed baryon asymmetry at the TeV scale.
Article
Physics, Particles & Fields
Ralph Blumenhagen, Niccolo Cribiori, Christian Kneissl, Andriana Makridou
Summary: We studied the dynamical cobordism induced by the backreaction of a non-supersymmetric, positive tension domain wall in string theory, and provided evidence for a new kind of non-isotropic solution related to this.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Junjie Cao, Demin Li, Jingwei Lian, Yuanfang Yue, Haijing Zhou
Summary: The general NMSSM describes singlino-dominated dark matter properties through four independent parameters, influencing annihilation and scattering processes. Compared to Z(3)-NMSSM, which introduces an additional parameter, experiments strongly favor the general NMSSM.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Gregory J. Loges, Gary Shiu
Summary: Intersecting branes provide a useful mechanism for constructing particle physics models with desirable characteristics. Machine learning techniques can efficiently generate consistent and phenomenologically interesting models. This work demonstrates the construction of numerous consistent intersecting D-brane models using a genetic algorithm, with a significant portion containing the desired Standard Model gauge group factor.
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS
(2022)
Article
Astronomy & Astrophysics
Nikita Blinov, Matthew J. Dolan, Patrick Draper, Jessie Shelton
Summary: This study introduces simplified models to explain enhancements in the matter power spectrum at small scales and investigates their impact on dark matter substructure and gravitational observables. The models capture the characteristics of various early Universe scenarios and discuss the sensitivity of gravitational observables to the presence of bumps in the power spectrum.
Article
Physics, Particles & Fields
Danyer Perez Adan, Henning Bahl, Alexander Grohsjean, Victor Martin Lozano, Christian Schwanenberger, Georg Weiglein
Summary: The search for dark matter via scalar resonances in final states consisting of Standard Model particles and missing transverse momentum is highly relevant at the LHC. This study shows that existing searches are also sensitive to a wider class of models, and suggests improved analysis strategies for models with a balanced decay topology. By investigating the feasibility of a new search for bottom-quark associated neutral Higgs production, the results can be easily interpreted in a wide range of physics models beyond the Standard Model.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Nicolo Burzilla, Breno L. Giacchini, Tiberio de Paula Netto, Leonardo Modesto
Summary: In this paper, we analyze the static spherically symmetric solutions of a sixth-derivative Lee-Wick gravity model and find interesting structures in the full parameter space, including horizon structures, mass gaps, and multiple regimes for black hole sizes. The thermodynamics of these solutions exhibit multiple mass scales for the remnants of the evaporation process and the possibility of cold black holes and quasi-stable intermediate configurations.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Physics, Particles & Fields
Nicolo Burzilla, Breno L. Giacchini, Tiberio de Paula Netto, Leonardo Modesto
Summary: The paper investigates the Newtonian limit of higher-derivative gravity theories, including the effects of one-loop quantum corrections. It shows that curvature-derivative invariants may diverge in local theories, but can be regularized in nonlocal theories. Additionally, it demonstrates that quantum corrections do not affect the regularity of the Newtonian limit, and confirms the universality of the leading quantum correction in all theories studied.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Nicolo Burzilla, Breno L. Giacchini, Tiberio de Paula Netto, Leonardo Modesto
Summary: The Newtonian metric potentials for fourth-derivative gravity with one-loop logarithm quantum corrections were derived. The modified Newtonian potential near the origin was shown to be improved compared to the classical one, but the curvature singularity at r = 0 remains. The results are based on a rigorous proof involving numerical and analytic computations.
Article
Optics
Zhongyou Mo, Junji Jia
Article
Astronomy & Astrophysics
Luca Amendola, Nicolo Burzilla, Henrik Nersisyan