Results 91 to 100 of about 9,015 (168)

Second leptogenesis: Unraveling the baryon-lepton asymmetry discrepancy

Journal of High Energy Physics
We propose a novel scenario to explain the matter-antimatter asymmetry by twofold leptogenesis, wherein heavy Majorana neutrinos exhibit temperature-dependent masses and engage in CP-violating decays.
YeolLin ChoeJo, Kazuki Enomoto, Yechan Kim, Hye-Sung Lee   +3 more
doaj   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source

Testable inverse seesaw motivated from a high quality QCD axion

Journal of High Energy Physics
The QCD axion remains one of the most compelling solutions to the strong CP problem. Meanwhile, the type-I seesaw mechanism offers an elegant explanation for the lightness of the observed neutrino masses; however, its extremely heavy Majorana states ...
Yannis Georis, Jie Sheng, Salvador Urrea, Tsutomu T. Yanagida   +3 more
doaj   +1 more source

New parameter region in sterile neutrino searches: a scenario to alleviate cosmological neutrino mass bound and its testability at oscillation experiments

Journal of High Energy Physics
Recent high-precision cosmological data tighten the bound to neutrino masses and start rising a tension to the results of lab-experiment measurements, which may hint new physics in the role of neutrinos during the structure formation in the universe.
Toshihiko Ota
doaj   +1 more source

Measuring lepton number violation in heavy neutral lepton decays at the future muon collider

Journal of High Energy Physics
The future muon collider has the potential to discover feebly interacting particles in a wide range of masses above the electroweak scale. It is particularly suitable to search for heavy neutral leptons (HNLs), as their production cross section σ ∼ m W −
Oleksii Mikulenko, Mariia Marinichenko
doaj   +1 more source

Coherent collision integrals for neutrino transport equations

Journal of High Energy Physics
We present quantum kinetic equations for neutrinos and derive Feynman rules for computing scattering rates involving coherent states. Our rules encompass both flavour- and particle-antiparticle coherence and allow writing down the scattering matrix ...
Kimmo Kainulainen, Harri Parkkinen
doaj   +1 more source

Neutrino properties from muonium-antimuonium mixing

Journal of High Energy Physics
The nature of neutrino mass — whether neutrinos are Dirac or Majorana particles — remains one of the central open questions in particle physics. While observation of neutrinoless double beta decay would confirm the Majorana case, the absence of a signal ...
Mitrajyoti Ghosh, Kevin Liguori, Takemichi Okui, Kohsaku Tobioka   +3 more
doaj   +1 more source

Threshold effects on the massless neutrino in the canonical seesaw mechanism

Journal of High Energy Physics
In this work, we revisit the one-loop renormalization group equations (RGEs) among non-degenerate seesaw scales, i.e., threshold effects in the canonical seesaw mechanism, which have been obtained for more than two decades.
Di Zhang
doaj   +1 more source

Quantum transport theory for neutrinos with flavor and particle-antiparticle mixing

Journal of High Energy Physics
We derive quantum kinetic equations for mixing neutrinos including consistent forward scattering terms and collision integrals for coherent neutrino states.
Kimmo Kainulainen, Harri Parkkinen
doaj   +1 more source

Collider prospects for the neutrino magnetic moment portal

Journal of High Energy Physics
The transition magnetic moment between active and sterile neutrinos is theoretically well-motivated scenario beyond the Standard Model, which can be probed in cosmology, astrophysics, and at terrestrial experiments.
Vedran Brdar, Ying-Ying Li, Samiur R. Mir, Yi-Lin Wang   +3 more
doaj   +1 more source