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199 papers
Neutron disappearance and the LZ nuclear recoil event
Mohammad Aghaie, Alessandro Strumia
The LZ experiment reported a nuclear recoil with anomalous energy keV, around the typical neutron motion in xenon. This motivates interpreting the event as the disappeara…
Boosted dark particles and the LZ nuclear recoil event
Kristjan Kannike, Martti Raidal, Alessandro Strumia
The LZ experiment reported one anomalous event with nuclear recoil energy of 248 keV. Galactic halo dark matter (DM) cannot produce such a large energy unless heavier than 74 GeV,…
The Too Visible QCD Axion
Luca Di Luzio, Michele Redi, Alessandro Strumia +2
Murayama proposed a GeV-scale axion theory where the up-quark mass term is generated dynamically by the QCD chiral condensate, spontaneously breaking a Peccei-Quinn symmetry. It pr…
QCD corrections to Minimal Dark Matter annihilations
Alessandro Strumia
QCD corrections to fermionic Minimal Dark Matter annihilations increase its annihilation cross section (by 2% for a weak doublet, 1.3% for a triplet, 0.5% for a quintuplet) and the…
Infra-red enhanced loops in quadratic gravity
Alberto Salvio, Alessandro Strumia, Marco Vitti
It has been suggested that logarithmically enhanced infra-red loop corrections arising in theories with four derivatives correspond to a physical running of couplings, rendering qu…
Probing the Dark Matter density with gravitational waves from super-massive binary black holes
Anish Ghoshal, Alessandro Strumia
Supermassive black hole binaries source gravitational waves measured by Pulsar Timing Arrays. The frequency spectrum of this stochastic background is predicted more precisely than…