14 papers
The flavour of SU(15) composite quarks and leptons
Benoît Assi, Ryan Plestid, Amartya Sengupta +1
We study the flavour structure of an confining chiral gauge theory in which the Standard Model (SM) quarks, leptons, and Higgs emerge as composite bound states. The coup…
Future directions in nuclear decay at FRIB and beyond
Garrett B. King, Ayala Glick-Magid, Grigor Sargsyan +38
Motivated by the opportunities presented for studies relevant to nuclear structure, astrophysics, and fundamental symmetries with nuclear decay, the Facility for Rare Isotope…
Long-lived axionlike particles from electromagnetic cascades
Samuel Patrone, Nikita Blinov, Ryan Plestid
We study axionlike particles (ALPs) in beam dump experiments, focusing on the Search for Hidden Particles (SHiP, at CERN) experiment and the Beam Dump eXperiment (BDX, at JLab). Ma…
Fluctuations in atom interferometers as a new tool for dark matter
Clara Murgui, Ryan Plestid
We propose the use of the super-binomial variance in the count rate of an atom interferometer as a novel signature of dark matter. We show that the dark matter induced shift in thi…
The correction to superallowed beta decays in effective field theory and implications for
Zehua Cao, Richard J. Hill, Ryan Plestid +1
Superallowed () beta decays currently provide the most precise extraction of quark mixing in the Standard Model. Their interpretation as a measurement of $|V_{ud…
Coherently enhanced decoherence and cloud substructure of atom interferometers
Clara Murgui, Ryan Plestid
We study how coherent scattering of a background gas off an atom (or other matter) interferometer can lead to enhanced signals from phase shifts and contrast loss. We focus on the…