All Outputs (58)

Constraining light thermal inelastic dark matter with NA64 (2023)
Journal Article

A vector portal between the Standard Model and the dark sector is a predictive and compelling framework for thermal dark matter. Through co-annihilations, models of inelastic dark matter (iDM) and inelastic Dirac dark matter (i2DM) can reproduce t... Read More about Constraining light thermal inelastic dark matter with NA64.

The present and future status of heavy neutral leptons (2023)
Journal Article

The existence of nonzero neutrino masses points to the likely existence of multiple Standard Model neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, they are referred to as heavy neutral leptons (HNLs).... Read More about The present and future status of heavy neutral leptons.

Higher order initial conditions with massive neutrinos (2022)
Journal Article

The discovery that neutrinos have mass has important consequences for cosmology. The main effect of massive neutrinos is to suppress the growth of cosmic structure on small scales. Such growth can be accurately modelled using cosmological N-body simu... Read More about Higher order initial conditions with massive neutrinos.

Confronting SO(10) GUTs with proton decay and gravitational waves (2021)
Journal Article

Grand Unified Theories (GUT) predict proton decay as well as the formation of cosmic strings which can generate gravitational waves. We determine which non-supersymmetric SO(10) breaking chains provide gauge unification in addition to a gravitational... Read More about Confronting SO(10) GUTs with proton decay and gravitational waves.

An optimal non-linear method for simulating relic neutrinos (2021)
Journal Article

Cosmology places the strongest current limits on the sum of neutrino masses. Future observations will further improve the sensitivity and this will require accurate cosmological simulations to quantify possible systematic uncertainties and to make pr... Read More about An optimal non-linear method for simulating relic neutrinos.

Discovery potential of FASERν with contained vertex and through-going events (2021)
Journal Article

FASERν is a newly proposed detector whose main mission is to detect the neutrino flux from the collision of the proton beams at the ATLAS Interaction Point (IP) during the run III of the LHC in 2022–2024. We show that this detector can also test cert... Read More about Discovery potential of FASERν with contained vertex and through-going events.

Gravitational Waves and Proton Decay: Complementary Windows into Grand Unified Theories (2021)
Journal Article

Proton decay is a smoking gun signature of grand unified theories (GUTs). Searches by Super-Kamiokande have resulted in stringent limits on the GUT symmetry-breaking scale. The large-scale multipurpose neutrino experiments DUNE, Hyper-Kamiokande, and... Read More about Gravitational Waves and Proton Decay: Complementary Windows into Grand Unified Theories.

Unravelling the richness of dark sector by FASERν (2020)
Journal Article

FASERν is a newly proposed experiment which will take data in run III of the LHC during 2021–2023. It will be located in front of the FASER detector, 480 m away from the ATLAS interaction point in the forward direction. Its main goal is to detect neu... Read More about Unravelling the richness of dark sector by FASERν.

Dark neutrinos and a three-portal connection to the standard model (2020)
Journal Article

We introduce a dark neutrino sector which respects a hidden Uð1Þ0 gauge symmetry, subsequently broken by the vacuum expectation value of a dark scalar. The model is a self-consistent realization of an extended hidden sector that communicates with the... Read More about Dark neutrinos and a three-portal connection to the standard model.

Heavy Neutral Leptons from low-scale seesaws at the DUNE Near Detector (2020)
Journal Article

Heavy nearly-sterile neutrinos are a common ingredient in extensions of the Standard Model which aim to explain neutrino masses, like for instance in Type I seesaw models, or one of its variants. If the scale of the new Heavy Neutral Leptons (HNLs) i... Read More about Heavy Neutral Leptons from low-scale seesaws at the DUNE Near Detector.

Leptogenesis in the Neutrino Option (2019)
Journal Article

We examine the compatibility between the Neutrino Option, in which the electroweak scale is generated by PeV mass type I seesaw Majorana neutrinos, and leptogenesis. We find the Neutrino Option is consistent with resonant leptogenesis. Working within... Read More about Leptogenesis in the Neutrino Option.

Z's in neutrino scattering at DUNE (2019)
Journal Article

Novel leptophilic neutral currents can be tested at upcoming neutrino oscillation experiments using two complementary processes, neutrino trident production and neutrino-electron (ν − e) elastic scattering. Considering generic anomaly-free Uð1Þ exten... Read More about Z's in neutrino scattering at DUNE.

Heavy neutrinos with dynamic jet vetoes: multilepton searches at √s = 14, 27, and 100 TeV (2019)
Journal Article

Heavy neutrinos (N) remain one of most promising explanations for the ori-gin of neutrinos’ tiny masses and large mixing angles. In light of broad advances in un-derstanding and modeling of hadron collisions at large momentum transfers, we revisit th... Read More about Heavy neutrinos with dynamic jet vetoes: multilepton searches at √s = 14, 27, and 100 TeV.

Neutrino masses from a dark neutrino sector below the electroweak scale (2019)
Journal Article

We consider a minimal extension of the Standard Model which advocates a dark neutrino sector charged under a hidden U(1)′. We show that neutrino masses can arise radiatively in this model. The observed values are compatible with a light dark sector b... Read More about Neutrino masses from a dark neutrino sector below the electroweak scale.

U(1) ′ mediated decays of heavy sterile neutrinos in MiniBooNE (2019)
Journal Article

The MiniBooNE low-energy excess is a long-standing problem which has received further confirmation with a reanalysis using newly collected data, with the anomaly now at the 4.8σ level. In this paper we propose a novel explanation which advocates a lo... Read More about U(1) ′ mediated decays of heavy sterile neutrinos in MiniBooNE.

Leptogenesis from low energy CP violation (2019)
Journal Article

We revisit the possibility of producing the observed baryon asymmetry of the Universe via thermal leptogenesis, where CP violation comes exclusively from the low-energy phases of the neutrino mixing matrix. We demonstrate the viability of thermal fla... Read More about Leptogenesis from low energy CP violation.

Leptogenesis via a varying Weinberg operator: a semi-classical approach (2019)
Journal Article

In this paper, we introduce leptogenesis via a varying Weinberg operator from a semi-classical perspective. This mechanism is motivated by the breaking of an underlying symmetry which triggers a phase transition that causes the coupling of the Weinbe... Read More about Leptogenesis via a varying Weinberg operator: a semi-classical approach.

Neutrino trident scattering at near detectors (2019)
Journal Article

Neutrino trident scattering is a rare Standard Model process where a charged-lepton pair is produced in neutrino-nucleus scattering. To date, only the dimuon final-state has been observed, with around 100 total events, while the other channels are as... Read More about Neutrino trident scattering at near detectors.

W+W− H production at lepton colliders: a new hope for heavy neutral leptons (2018)
Journal Article

We present the first study of the production of a Standard Model Higgs boson at a lepton collider in association with a pair of W bosons, e+e− → W+W− H, in the inverse seesaw model. Taking into account all relevant experimental and theoretical constr... Read More about W+W− H production at lepton colliders: a new hope for heavy neutral leptons.

Safe jet vetoes (2018)
Journal Article

Central jet vetoes are powerful tools for reducing QCD background in measurements and searches for electroweak and colorless, new physics processes in hadron collisions. In this letter, we report the key findings of a new philosophy to designing sear... Read More about Safe jet vetoes.