Article
Physics, Particles & Fields
Fabiola Fortuna, Pablo Roig, Jose Wudka
Summary: In this study, interactions between dark matter and standard model particles with spin one mediators are analyzed within an effective field theory framework. Solutions corresponding to operators with antisymmetric tensor mediators that meet various experimental constraints are obtained.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Borna Salehian, Hong-Yi Zhang, Mustafa A. Amin, David Kaiser, Mohammad Hossein Namjoo
Summary: This paper systematically derives the SP equations and relativistic corrections from the nonlinear and fully relativistic KGE equations in an expanding universe, providing insights into deviations and applicability beyond the SP system. The method presented simplifies the analysis of scalar dark matter dynamics and accurately captures deviations from the SP system towards the full KGE case, particularly in calculating the mass-radius relationship of solitons.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Jose Eliel Camargo-Molina, Rikard Enberg, Johan Lofgren
Summary: Research shows that a first-order Electroweak Phase Transition is possible in the Standard Model Effective Field Theory when the barrier between minima is generated radiatively. Experimental data reveals key points that agree with a first-order transition.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Adam Falkowski, Martin Gonzalez-Alonso, Oscar Naviliat-Cuncic
Summary: This paper reviews and analyzes precision measurements in allowed nuclear beta decays and neutron decay, confirming the V-A character of the interaction and updating the values for V-ud and g(A) at the 10^(-4) level. By incorporating data from mirror beta transitions in new global fits, the study also places new stringent limits on exotic couplings involving left-handed and right-handed neutrinos.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Juan Carlos Criado, Abdelhak Djouadi, Manuel Perez-Victoria, Jose Santiago
Summary: This paper presents an effective field theory describing the interactions between the Standard Model and dark matter candidates. The framework includes non-redundant basis of gauge-invariant operators up to dimension six, allowing for a general description of the interactions. Specific examples illustrate the phenomenological use of this framework, highlighting the importance of non-renormalizable operators in certain cases.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Thomas G. Rizzo
Summary: In this paper, the interaction between dark matter and the Standard Model is studied, leading to a possible phenomenon of dark magnetic dipole moments. Through the investigation of a simple toy model, it is found that the existence of dark matter can result in outcomes that are compatible with existing experimental constraints and exhibit different characteristics once the DP is discovered. In specific parameter space regions, the invisible decay of DP may be more preferred.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yong Du, Jiang-Hao Yu
Summary: The study precisely calculates the number of relativistic species, N-eff, in the standard model and predicts it will be measured to the percent level by CMB-S4 in the future. Neutral-current non-standard interactions are found to impact neutrino decoupling in the early Universe, subsequently modifying N-eff. The results provide a comprehensive analysis of the dimension-7 parameterized operators in effective field theory framework and offer a stringent constraint on the dimension-6 vector-type neutrino-electron operator's scale.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Simone Biondini, Vladyslav Shtabovenko
Summary: This paper aims to study the non-relativistic limit of Yukawa interactions between heavy Dirac fermions and a scalar field, using modern effective field theory techniques not previously explored. The motivation for the study lies in explaining cosmological observations by introducing heavy fermionic dark matter particles that interact with each other through exchanging a light scalar mediator. The main novelty of this approach is the systematic study of this scenario within the framework of non-relativistic effective field theories.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Miguel Levy, Joao G. Rosa, Luis B. Ventura
Summary: The study demonstrates the potential of realizing warm inflation in a minimal extension of the Standard Model, which can address various shortcomings of the Standard Model. The use of symmetries within the model not only helps to protect the scalar potential against thermal corrections, but also provides a possible explanation for the existence of dark matter.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Amjad Ashoorioon, Abasalt Rostami, Javad T. Firouzjaee
Summary: This paper presents a mechanism for enhancing the power spectrum during inflation, based on the observation that if the quartic coefficient in the dispersion relation is negative, the amplitude of the power spectrum is substantially enhanced. The mechanism must kick in at scales related to the mass of the PBHs one would like to produce, and it can be applied to produce solar mass PBHs or to contribute to the dark matter energy density.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Avik Paul, Upala Mukhopadhyay, Debasish Majumdar
Summary: The study explores a simple extension of the Standard Model by adding two complex singlet scalars with U(1) symmetry. A discrete Z2xZ2' symmetry is imposed in the model, and the generation of gravitational waves from unstable annihilating domain walls and strong first-order phase transition is investigated. Observational signatures from these gravitational waves at future detectors are also discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Guillermo Ballesteros, Sebastian Cespedes, Luca Santoni
Summary: This paper studies the mechanisms for generating a large power spectrum within the effective theory of single-field inflation, which is necessary for the formation of primordial black holes. The mechanisms considered include a transition into a ghost-inflation-like phase and scenarios where an exponentially growing mode is temporarily turned on. The enhancement in the power spectrum results from either a swift change in some effective coupling or a modification of the dispersion relation for the perturbations, while the background evolution remains unchanged and approximately de Sitter throughout inflation. The weakly broken galileon symmetry guarantees the robustness of the results.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Upalaparna Banerjee, Joydeep Chakrabortty, Suraj Prakash, Shakeel Ur Rahaman, Michael Spannowsky
Summary: The BSMEFT is a theoretical framework constructed when the physics spectrum beyond the SM is non-degenerate, including additional IR degrees of freedom. Constructing a BSMEFT is usually the first step after experimental evidence for a new particle is established. This paper provides BSMEFT models and their EFT Lagrangian for three different scenarios.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Raffaele Tito D'Agnolo, Di Liu, Joshua T. Ruderman, Po-Jen Wang
Summary: The authors present a mechanism of kinematically forbidden dark matter annihilations into Standard Model leptons, which precisely selects the dark matter mass that gives the observed relic abundance. This mechanism differs qualitatively from existing models of thermal dark matter, where fixing the relic density typically leaves open orders of magnitude of viable dark matter masses.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Fuminobu Takahashi, Masaki Yamada, Wen Yin
Summary: The recent excess observed in the electron recoil data of XENON1T can be explained by anomaly-free axion-like particle (ALP) dark matter, which may have played a role in driving inflation in the early universe. The study suggests successful reheating after inflation requires ALP couplings to heavy fermions, followed by an entropy dilution of O(10) achieved through decays of right-handed neutrinos to explain the XENON1T excess.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)