6 papers
LHC Shines on Positivity
Zhen Liu, Kun-Feng Lyu, Tong Arthur Wu
We show that hadron colliders have an excellent reach for positivity tests on a class of diphoton operators. Due to the helicity selection rules, the relevant dimension-6 operators…
Heavy Neutral Leptons from Stopped Muons and Pions
Yohei Ema, Zhen Liu, Kun-Feng Lyu +1
Stopped muons, which are generic in pion-at-rest experiments, can shed light on heavy neutral leptons (HNLs) in unexplored parameter spaces. If the HNL is lighter than the muon, th…
Report of the Topical Group on Physics Beyond the Standard Model at Energy Frontier for Snowmass 2021
Tulika Bose, Antonio Boveia, Caterina Doglioni +318
This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More gen…
Radio Signals from Axion Star-Neutron Star Binaries
Chris Kouvaris, Tao Liu, Kun-Feng Lyu
Axion stars could form binaries with neutron stars. Given the extremely strong external magnetic field exhibited by individual neutron stars, there can be a substantial conversion…
Self-interacting neutrinos: solution to Hubble tension versus experimental constraints
Kun-Feng Lyu, Emmanuel Stamou, Lian-Tao Wang
Exotic self-interactions among the Standard-Model neutrinos have been proposed as a potential reason behind the tension in the expansion rate, H0, of the universe inferred from dif…
Probing Quartic Higgs Self-Interaction
Tao Liu, Kun-Feng Lyu, Jing Ren +1
The Higgs self-interactions play a crucial role for exploring the underlying mechanism of electroweak symmetry breaking and the nature of the phase transition involved. In this art…