515 citations · 4.7k across the 73 of their papers we have counts for
8 papers · 1 filter
Triggering Soft Bombs at the LHC
Simon Knapen, Simone Pagan Griso, Michele Papucci +1
Very high multiplicity, spherically-symmetric distributions of soft particles, with ~ few hundred MeV, may be a signature of strongly-coupled hidden valleys that exhibit long…
Light Dark Matter in Superfluid Helium: Detection with Multi-excitation Production
Simon Knapen, Tongyan Lin, Kathryn M. Zurek
We examine in depth a recent proposal to utilize superfluid helium for direct detection of sub-MeV mass dark matter. For sub-keV recoil energies, nuclear scattering events in liqui…
Searching for axion-like particles with ultra-peripheral heavy-ion collisions
Simon Knapen, Tongyan Lin, Hou Keong Lou +1
We show that ultra-peripheral heavy-ion collisions at the LHC can be used to search for axion-like particles with mass below 100 GeV. The enhanced photon-photon luminosity fr…
Gauge Mediation at LHC: status and prospects
Simon Knapen, Diego Redigolo
We show that the predictivity of general gauge mediation (GGM) with TeV-scale stops is greatly increased once the Higgs mass constraint is imposed. The most notable results are a s…
Diphotons from an Electroweak Triplet-Singlet
Kiel Howe, Simon Knapen, Dean J. Robinson
The neutral component of a real pseudoscalar electroweak (EW) triplet can produce a diphoton excess at 750 GeV, if it is somewhat mixed with an EW singlet pseudoscalar. This triple…
Rays of light from the LHC
Simon Knapen, Tom Melia, Michele Papucci +1
We consider models for the di-photon resonance observed at ATLAS (with 3.6 fb^{-1}) and CMS (with 2.6 fb^{-1}). We find there is no conflict between the signal reported at 13 TeV,…