Long-lived particles at the energy frontier: the MATHUSLA physics case
We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a
comprehensive survey of standard model (SM) extensions. LLPs are a common prediction of …
comprehensive survey of standard model (SM) extensions. LLPs are a common prediction of …
Lepton number violation: seesaw models and their collider tests
The Majorana nature of neutrinos is strongly motivated from the theoretical and
phenomenological point of view. A plethora of neutrino mass models, known collectively as …
phenomenological point of view. A plethora of neutrino mass models, known collectively as …
Have pulsar timing array methods detected a cosmological phase transition?
We show that the recent detection of a gravitational wave (GW) background reported by
various pulsar timing array (PTA) collaborations including NANOGrav-15 yr, PPTA …
various pulsar timing array (PTA) collaborations including NANOGrav-15 yr, PPTA …
Neutrinos and collider physics
We review the collider phenomenology of neutrino physics and the synergetic aspects at
energy, intensity and cosmic frontiers to test the new physics behind the neutrino mass …
energy, intensity and cosmic frontiers to test the new physics behind the neutrino mass …
The symmetry approach to quark and lepton masses and mixing
GJ Ding, JWF Valle - Physics Reports, 2025 - Elsevier
Abstract The Standard Model lacks an organizing principle to describe quark and lepton
“flavours”. Neutrino oscillation experiments show that leptons mix very differently from …
“flavours”. Neutrino oscillation experiments show that leptons mix very differently from …
Toward deconstructing the simplest seesaw mechanism
The triplet or type-II seesaw mechanism is the simplest way to endow neutrinos with mass in
the Standard Model (SM). Here we review its associated theory and phenomenology …
the Standard Model (SM). Here we review its associated theory and phenomenology …
Phenomenology of lepton masses and mixing with discrete flavor symmetries
The observed pattern of fermion masses and mixing is an outstanding puzzle in particle
physics, generally known as the flavor problem. Over the years, guided by precision neutrino …
physics, generally known as the flavor problem. Over the years, guided by precision neutrino …
On the description of nonunitary neutrino mixing
Neutrino oscillations are well established and the relevant parameters determined with good
precision, except for the CP phase, in terms of a unitary lepton mixing matrix. Seesaw …
precision, except for the CP phase, in terms of a unitary lepton mixing matrix. Seesaw …
Long-lived heavy neutrinos from Higgs decays
FF Deppisch, W Liu, M Mitra - Journal of High Energy Physics, 2018 - Springer
A bstract We investigate the pair-production of right-handed neutrinos via the Standard
Model (SM) Higgs boson in a gauged B− L model. The right-handed neutrinos with a mass …
Model (SM) Higgs boson in a gauged B− L model. The right-handed neutrinos with a mass …
gauge symmetry as a simple description of anomalies
We present a simple U (1) B 3-3 L 2 gauge standard model extension that can easily
account for the anomalies in R (K) and R (K*) reported by LHCb. The model is economical in …
account for the anomalies in R (K) and R (K*) reported by LHCb. The model is economical in …