79 citations · 144 across the 13 of their papers we have counts for
16 papers
Near Threshold Kaluza-Klein Graviton Decays and the Dark Dimension
Kevin Langhoff
Near threshold, intra-tower decays of Kaluza-Klein (KK) gravitons are pure -wave, with rate in the decay products momentum , rather than the -wave $Γ\propto…
Sneaky Sneutrino Scattering at LZ
Kevin Langhoff, Huangyu Xiao
We explore a model of sneutrino dark matter in the Minimal R-Symmetric Supersymmetric Standard Model as a possible interpretation of the recent event at LZ with high reconstructed…
Heavy Higgsino Interpretation of the LZ Event
Kevin Langhoff
The LZ experiment has recently reported a keV nuclear recoil event in a region where backgrounds are expected to be low. A pure higgsino scattering inelastically through a $Z…
Baryogenesis via the CKM Matrix with Minimal Flavor Violation
Innes Bigaran, Gordan Krnjaic, Kevin Langhoff +1
It is often claimed Standard Model CP violation is insufficient for baryogenesis. We present a counterexample using minimal flavor violation (MFV) in which all CP-violating effects…
The Dark Dimension meets the Axiverse
Kevin Langhoff, Maria Ramos, Mario Reig
We explore the cosmological implications of combining dark dimension scenarios with an axiverse. If gauge sectors are realized on branes, towers of Kaluza-Klein (KK) excitations of…
Higgs Couplings at a Future Wakefield Collider
Katherine Fraser, Simon Knapen, Kevin Langhoff +1
We explore the potential of multiple possible future 10 TeV wakefield colliders to measure electroweak couplings of the Higgs boson. We find that the beam-beam interactions are not…
Vector Resonances at Muon and Wakefield Colliders
Massimo Cipressi, Kevin Langhoff, Toby Opferkuch
We explore the potential of future high-energy lepton colliders to probe heavy vector resonances. At wakefield colliders, intense beam-beam interactions produce radiation, called b…
A Flavor of SO(10) Unification with a Spinor Higgs
Juanca Carrasco-Martinez, Lawrence J. Hall, Keisuke Harigaya +1
We investigate Higgs Parity Unification-a realization of grand unification based on the Higgs Parity mechanism in which the Standard Model (SM) Higgs resides in a spinor r…
Design Initiative for a 10 TeV pCM Wakefield Collider
Spencer Gessner, Jens Osterhoff, Carl A. Lindstrøm +198
This document outlines a community-driven Design Study for a 10 TeV pCM Wakefield Accelerator Collider. The 2020 ESPP Report emphasized the need for Advanced Accelerator R\&D, and…
Imprints of supersymmetry at a future Z factory
Simon Knapen, Kevin Langhoff, Zoltan Ligeti
We study the discovery potential of Z branching ratios due to contributions induced by the MSSM electroweak sector, assuming that the squarks and gluinos are heavy. Precision measu…
A Robust Search for Lepton Flavour Violating Axions at Mu3e
Simon Knapen, Kevin Langhoff, Toby Opferkuch +1
We propose a search at Mu3e for lepton flavor violating axion(-like) particles in decays. By requiring an additional pair from internal conversion, one can c…
Angling for Insights: Illuminating Light New Physics at Mu3e through Angular Correlations
Simon Knapen, Kevin Langhoff, Toby Opferkuch +1
We examine the capability of Mu3e to probe light new physics scenarios that produce a prompt electron-positron resonance and demonstrate how angular observables are instrumental in…
The Irreducible Axion Background
Kevin Langhoff, Nadav Joseph Outmezguine, Nicholas L. Rodd
Searches for dark matter decaying into photons constrain its lifetime to be many orders of magnitude larger than the age of the Universe. A corollary statement is that the abundanc…
Super-Resonant Dark Matter
Csaba Csáki, Andrew Gomes, Yonit Hochberg +3
We introduce Super-Resonant Dark Matter, a model of self-interacting dark matter based on the low energy effective theory of supersymmetric QCD. The structure of the theory ensures…
The Multiverse in an Inverted Island
Kevin Langhoff, Chitraang Murdia, Yasunori Nomura
We study the redundancies in the global spacetime description of the eternally inflating multiverse using the quantum extremal surface prescription. We argue that a sufficiently la…
Ensemble from Coarse Graining: Reconstructing the Interior of an Evaporating Black Hole
Kevin Langhoff, Yasunori Nomura
In understanding the quantum physics of a black hole, nonperturbative aspects of gravity play important roles. In particular, huge gauge redundancies of a gravitational theory at t…