Heavy Neutral Leptons are a class of hypothetical particle, motivated by simultaneously solving multiple of the standing issues of the Standard Model. In this work we investigate the decay structure of this type of particle in the hadronic picture for multi-body final states. We propose to link the resulting hadronic description to a partonic description in a seamless transition based on the hadron system's invariant mass. Beyond the impact on the total HNL lifetime, we will show that the multi-hadron channels emerging in this description can constitute interesting experimental signatures.
Four-top production is one of the rarest processes of the Standard Model observable at the Large Hadron Collider, offering sensitivity to the top Yukawa coupling, Higgs width, and beyond-Standard-Model physics. We present precise predictions for the invariant-mass distribution and total cross section using threshold re...
M. van Beekveld, A. Kulesza, Michele Lupattelli et al.· 0 citations
We argue that a detailed analysis of semileptonic decays can test the possibility of a massive neutrino. The key observable, related to the forward-backward asymmetry, is exactly zero for a massless neutrino but becomes non-zero if the neutral lepton is heavy and interacts with Standard Model fields via left-handed ope...
Searches for Charged Lepton Flavor Violation (CLFV) are powerful tools to probe physics beyond the Standard Model (BSM). This chapter provides a comprehensive survey of CLFV theory, focusing primarily on low-energy muon and tau transitions while outlining complementary searches from high-energy colliders. Grounded in t...
Lorenzo Calibbi, K. Fuyuto, Matthias Heinz et al.· 0 citations
Hadron production, including pions, kaons and antiprotons, in proton-proton collisions at an energy of 7 TeV at the ALICE facility has been studied. For the data analysis, a generalised parton model was used, which takes into account the interaction of two partons in colliding beams and the production of new particles....
A. Kurepin, E. Karpechev· Journal of Modern Physics· 0 citations
The baryon asymmetry of the Universe may be produced in a model with 3 Higgs fields, a Higgs Troika, without the need for a strong first order electroweak phase transition. The couplings of the new Higgs fields to Standard Model fermions are assumed in accord with the"Spontaneous Flavor Violation (SFV)"framework, in or...
H. Davoudiasl, I. M. Lewis, Miguel A. Soto Alcaraz· 0 citations
Up to now, the Standard Model (SM) remains confronted with several outstanding issues, including the matter-antimatter asymmetry in the universe, as well as the masses, oscillations, and hierarchical structure of neutrinos. These challenges are closely tied to the naturalness and stability of the SM, and have motivated...
Xin-Yu Chai· 0 citations
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