Results 71 to 80 of about 2,521 (215)
Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
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Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018 Decaying vacuum cosmological models evolving smoothly between two extreme (very early and late time) de Sitter phases are able to solve or at least to alleviate some cosmological puzzles; among them we have (i) the singularity, (ii) horizon, (iii) graceful‐exit from inflation, and (iv) the baryogenesis problem.
G. J. M. Zilioti +3 more
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The serendipity of electroweak baryogenesis [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018 The origin of the matter–antimatter asymmetry of the universe remains unexplained in the Standard Model (SM) of particle physics. The origin of the flavour structure is another major puzzle of the theory. In this article, we report on recent work attempting to link the two themes through the appealing framework of electroweak (EW) baryogenesis. We show
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Beyond MSSM baryogenesis [PDF]
Physical Review D, 2008 20 pages, 2 figures; v2: added ...
Blum, Kfir, Nir, Yosef
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, 2011 We summarize the state of the art of baryogenesis with particular attention to thermal leptogenesis, according to which the baryon asymmetry in the Universe is produced at very high temperatures from the decay of heavy righ-handed neutrinos, and to ...
Riotto, Antonio, Antonio Riotto
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Higgs Information and NMSSM at the Large Hadron Collider
Advances in High Energy Physics, Volume 2024, Issue 1, 2024.Information theory has proven to be a worthwhile tool for investigating the implications of the Higgs sector in the Next‐to‐Minimal Supersymmetric Standard Model (NMSSM) using Higgs information at the Large Hadron Collider (LHC) assessed through the entropy constructed by means of the branching ratios of decay channels of the Higgs boson.
Surabhi Gupta +2 more
wiley +1 more source
Singlet Fermion Assisted Dominant Seesaw with Lepton Flavor and Number Violations and Leptogenesis
Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017 Embedding type I seesaw in GUTs, left‐right gauge theories, or even in extensions of the SM requires large right‐handed neutrino masses making the neutrino mass generation mechanism inaccessible for direct experimental tests. This has been circumvented by introducing additional textures or high degree of fine‐tuning in the Dirac neutrino or right ...
M. K. Parida +2 more
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Cadernos de Astronomia, 2023 The standard model of particle physics describes matter and antimatter as coming from the same fields and this fact has been confirmed experimentally. It is then curious that the observable universe is made of matter and not antimatter. We will first discuss the evidence that we live in a matter-dominated (or matter-antimatter asymmetric) Universe and ...
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Baryogenesis by brane collision [PDF]
Physical Review D, 2002 We present a new scenario for baryogenesis in the context of heterotic brane-world models. The baryon asymmetry of the universe is generated at a small-instanton phase transition which is initiated by a moving brane colliding with the observable boundary.
Bastero-Gil, M +4 more
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Baryogenesis at the electroweak scale [PDF]
Zeitschrift für Physik C Particles and Fields, 1995 15 pages,Latex,no ...
Kundu, A., Mallik, S.
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