181 citations · 396 across the 21 of their papers we have counts for
19 papers · 1 filter
Neutrino Electroweak Couplings and the Neutrino Fog at Belle II
Carlos Henrique de Lima, David McKeen, Afif Omar +1
The mono-photon process at Belle II probes both invisible new states and the electroweak couplings of neutrinos. In this work, we study the proces…
Hadronic Probes of Non-Standard Neutrino Interactions
Carlos Henrique de Lima, David McKeen, John Ng +1
In this work, we study leptonic decays of hadrons as probes of light neutrinophilic scalars that mediate enhanced neutrino self-interactions. Such scalars can be emitted in process…
X-rays from Inelastic Dark Matter Freeze-in
Gordan Krnjaic, David McKeen, Riku Mizuta +3
We study inelastic dark matter produced via freeze-in through a light mediator with a mass splitting below the electron-positron threshold. In this regime, the heavier dark matter…
Characterizing Dark Bosons at Chiral Belle
Carlos Henrique de Lima, David McKeen, Afif Omar +1
We explore the advantages of a polarized electron beam at Belle II, as proposed for ``Chiral Belle'', in the search for invisibly decaying (dark) bosons that weakly couple to the S…
Probing Lepton Number Violation at Same-Sign Lepton Colliders
Carlos Henrique de Lima, David McKeen, John N. Ng +2
Same-sign lepton colliders offer a promising environment to probe lepton number violation. We study processes that change lepton number by two units in the context of Majorana heav…
The Sign of Gauge-Higgs Couplings at Future Lepton Colliders
Carlos Henrique de Lima, Douglas Tuckler
This work investigates the capability of future lepton colliders to determine the sign of the gauge-Higgs coupling through the vector boson fusion (VBF) process. This channel…
Higgs Portal Interpretation of the Belle II Measurement
David McKeen, John N. Ng, Douglas Tuckler
The Belle II experiment recently observed the decay for the first time, with a measured value for the branching ratio of . This resu…
Discovering the Origin of Neutrino Masses at SHiP
Seyda Ipek, Douglas Tuckler
In extensions of supersymmetric models, the bino and its Dirac partner, the singlino, can play the role of right-handed neutrinos. The bino and the singlino form a pseudo-…
Anomalies and Dark Matter in an Model with General Kinetic Mixing
Douglas Tuckler
We revisit the extension of the Standard Model that can simultaneously address anomalies in semileptonic meson decays and the nature of dark matter (DM). In the regi…
Core-collapse Supernova Constraint on the Origin of Sterile Neutrino Dark Matter via Neutrino Self-interactions
Yu-Ming Chen, Manibrata Sen, Walter Tangarife +2
Novel neutrino self-interaction can open up viable parameter space for the relic abundance of sterile-neutrino dark matter (SDM). In this work, we constrain the relic target usi…
Heavy Neutral Leptons at Beam Dump Experiments of Future Lepton Colliders
Pierce Giffin, Stefania Gori, Yu-Dai Tsai +1
A new beam dump experiment that utilizes the beam of future high energy electron-positron colliders could be an excellent avenue to search for dark sector particles due to its unpr…
Probing Neutrino-Portal Dark Matter at the Forward Physics Facility
Kevin J. Kelly, Felix Kling, Douglas Tuckler +1
The Forward Physics Facility (FPF), planned to operate near the ATLAS interaction point at the LHC, offers exciting new terrain to explore neutrino properties at TeV energy scales.…
The Forward Physics Facility: Sites, Experiments, and Physics Potential
Luis A. Anchordoqui, Akitaka Ariga, Tomoko Ariga +78
The Forward Physics Facility (FPF) is a proposal to create a cavern with the space and infrastructure to support a suite of far-forward experiments at the Large Hadron Collider dur…
General Kinetic Mixing in Gauged Model for Muon and Dark Matter
Timothy Hapitas, Douglas Tuckler, Yue Zhang
The gauged extension of the Standard Model is a very simple framework that can alleviate the tension in muon anomalous magnetic dipole moment, reinforced by the re…
Characterizing Dark Matter Signals with Missing Momentum Experiments
Nikita Blinov, Gordan Krnjaic, Douglas Tuckler
Fixed target missing-momentum experiments such as LDMX and M are powerful probes of light dark matter and other light, weakly coupled particles beyond the Standard Model (SM).…
Implications for Electric Dipole Moments of a Leptoquark Scenario for the -Physics Anomalies
Wolfgang Altmannshofer, Stefania Gori, Hiren H. Patel +2
Vector leptoquarks can address the lepton flavor universality anomalies in decays associated with the and transitions, as observed in recent ye…
Rare Top Decays as Probes of Flavorful Higgs Bosons
Wolfgang Altmannshofer, Brian Maddock, Douglas Tuckler
We study a version of Two Higgs Doublet Models with non-standard flavor violation in the up quark sector. We find branching ratios for the rare top decays and t…
The Flavor-locked Flavorful Two Higgs Doublet Model
Wolfgang Altmannshofer, Stefania Gori, Dean J. Robinson +1
We propose a new framework to generate the Standard Model (SM) quark flavor hierarchies in the context of two Higgs doublet models (2HDM). The `flavorful' 2HDM couples the SM-like…
Collider Signatures of Flavorful Higgs Bosons
Wolfgang Altmannshofer, Joshua Eby, Stefania Gori +3
Motivated by our limited knowledge of the Higgs couplings to first two generation fermions, we analyze the collider phenomenology of a class of two Higgs doublet models (2HDMs) wit…