Results 1 to 10 of about 970 (102)
Dynamical Minimal Flavour Violating inverse seesaw
Journal of High Energy Physics, 2022 The Inverse Seesaw mechanism is dynamically realised within the Minimal Lepton Flavour Violation context. Lepton number, whose breaking is spontaneously realised, is generalised to a global Abelian factor of the whole flavour symmetry, that also plays ...
Fernando Arias-Aragón +3 more
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Right-handed Dirac and Majorana neutrinos at Belle II
Journal of High Energy Physics, 2023 We assess the ability of the Belle II experiment to probe the Dirac or Majorana nature of a massive right-handed neutrino (RHN) N in the MeV to GeV mass range.
Tao Han +3 more
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More ingredients for an Altarelli cocktail at MiniBooNE
Journal of High Energy Physics, 2023 The MiniBooNE excess persists as a significant puzzle in particle physics. Given that the MiniBooNE detector cannot discriminate between electron-like signals and backgrounds due to photons, the goal of this work is to study photon backgrounds in ...
Kevin J. Kelly, Joachim Kopp
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Search for heavy Majorana neutrinos in the τ final state at proton-electron colliders
Journal of High Energy Physics, 2023 We utilize the lepton number violation signal process p e − → τ + jjj to search for heavy Majorana neutrinos at future proton-electron colliders. The LHeC (FCC-eh) is considered to run with an electron beam energy of 60 GeV, a proton beam energy of 7 (50)
Haiyong Gu +3 more
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Matter effects of sterile neutrino in light of renormalization-group equations
Journal of High Energy Physics, 2022 The renormalization-group equation (RGE) approach to neutrino matter effects is further developed in this work. We derive a complete set of differential equations for effective mixing elements, masses and Jarlskog-like invariants in presence of a light ...
Shuge Zeng, Fanrong Xu
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Sterile neutrinos: propagation in matter and sensitivity to sterile mass ordering
Journal of High Energy Physics, 2023 We analytically calculate the neutrino conversion probability P μe in the presence of sterile neutrinos, with exact dependence on ∆ m 41 2 $$ \Delta {m}_{41}^2 $$ and with matter effects explicitly included.
Dibya S. Chattopadhyay +5 more
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Constraining super-light sterile neutrinos at Borexino and KamLAND
Journal of High Energy Physics, 2022 The presence of a super-light sterile neutrino can lead to a dip in the survival probability of solar neutrinos, and explain the suppression of the upturn in the low energy solar neutrino data.
Zikang Chen +3 more
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Heavy Neutral Leptons from Stopped Muons and Pions
Journal of High Energy Physics, 2023 Stopped muons, which are generic in pion-at-rest experiments, can shed light on heavy neutral leptons (HNLs) in unexplored parameter spaces. If the HNL is lighter than the muon, the HNL can be produced from decays of muons and pions.
Yohei Ema +3 more
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Michel parameters in the presence of massive Dirac and Majorana neutrinos
Journal of High Energy Physics, 2022 We analyse the effects of Dirac and Majorana neutrinos on leptonic decays of muon and tau leptons using the most general four-lepton effective interaction Hamiltonian of dimension six.
Juan Manuel Márquez +2 more
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Heavy neutrinos at future linear e+e − colliders
Journal of High Energy Physics, 2022 Neutrinos are among the most mysterious particles in nature. Their mass hierarchy and oscillations, as well as their antiparticle properties, are being intensively studied in experiments around the world.
Krzysztof Mękała +2 more
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