Results 21 to 30 of about 4,933 (138)
Freeze-in dark matter via lepton portal: Hubble tension and stellar cooling
Journal of High Energy Physics, 2023 We propose a new freeze-in dark matter candidate which feebly couples to the standard model charged leptons. The feeble interactions allow it (i) to freeze-in from the Standard Model thermal bath with its relic density being either a fraction or the ...
Zixuan Xu +3 more
doaj +1 more source
LHC / ILC / Cosmology Interplay [PDF]
, 2006 There is a strong and growing interplay between particle physics and cosmology. In this talk, I discuss some aspects of this interplay concerning dark matter candidates put forth by theories beyond the Standard Model.
A J Barr +20 more
core +2 more sources
Scalar field couplings to quadratic curvature and decay into gravitons
Journal of High Energy Physics, 2022 Any field, even if it lives in a completely hidden sector, interacts with the visible sector at least via the gravitational interaction. In this paper, we show that a scalar field in such a hidden sector generically couples to the quadratic curvature via
Yohei Ema +2 more
doaj +1 more source
Moduli inflation from modular flavor symmetries
Journal of High Energy Physics, 2023 We study slow-roll inflation model controlled by the modular flavor symmetry. In the model, the modulus field plays a role of inflaton and the introduction of the stabilizer field coupled to a modular form in the superpotential produces the inflaton ...
Yoshihiko Abe +4 more
doaj +1 more source
Two Notions of Naturalness [PDF]
, 2018 My aim in this paper is twofold: (i) to distinguish two notions of naturalness employed in BSM physics and (ii) to argue that recognizing this distinction has methodological consequences.
Williams, Porter
core +2 more sources
Black hole evaporation beyond the Standard Model of particle physics
Journal of High Energy Physics, 2023 The observation of an evaporating black hole would provide definitive information on the elementary particles present in nature. In particular, it could discover or exclude particles beyond those present in the standard model of particle physics.
Michael J. Baker, Andrea Thamm
doaj +1 more source
The future of particle physics [PDF]
, 2006 I review the prospects for future progress in accelerator-based particle physicsComment: Opening talk at the 10th Pisa meeting on advanced detectors, La Biodola, May 22-27 ...
Mangano, Michelangelo
core +3 more sources
Ultra-relativistic bubbles from the simplest Higgs portal and their cosmological consequences
Journal of High Energy Physics, 2022 We analyze phase transitions in the minimal extension of the SM with a real singlet scalar field. The novelty of our study is that we identify and analyze in detail the region of parameter space where the first order phase transition can occur and in ...
Aleksandr Azatov +4 more
doaj +1 more source
Particle Physics and Cosmology
, 2014 Today, both particle physics and cosmology are described by few parameter Standard Models, i.e. it is possible to deduce consequence of particle physics in cosmology and vice verse.
Pralavorio, P.
core +1 more source
Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures
Advances in High Energy Physics, Volume 2019, Issue 1, 2019., 2019 The standard model of elementary particles (SM) suffers from various problems, such as power‐law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, started sidelining TeV‐scale SUSY and other known cures ...
Durmuş Demir, Michele Arzano
wiley +1 more source