179 citations · 2k across the 37 of their papers we have counts for
37 papers
Four-lepton Z-boson decay constraints on the SMEFT
Radja Boughezal, Chien-Yi Chen, Frank Petriello +1
We discuss how four-lepton decays of the Z-boson probe currently unconstrained flat directions in the parameter space of the Standard Model Effective Field Theory (SMEFT). We deriv…
Top quark decay at next-to-leading order in the Standard Model Effective Field Theory
Radja Boughezal, Chien-Yi Chen, Frank Petriello +1
We consider top quark decay in the Standard Model Effective Field Theory (SMEFT). We present a calculation of the total decay width and the -boson helicity fractions at next-to-…
New physics via pion capture and simple nuclear reactions
Chien-Yi Chen, David McKeen, Maxim Pospelov
Light, beyond-the-standard-model particles in the 1-100 MeV mass range can be produced in nuclear and hadronic reactions but would have to decay electromagnetically. We show th…
Exploring Leptophilic Dark Matter with NA64-
Chien-Yi Chen, Jonathan Kozaczuk, Yi-Ming Zhong
We investigate the prospects for detecting light leptophilic dark sectors with a missing-momentum experiment at NA64 running in muon mode. In particular, we consider models in whic…
Power Corrections to the Universal Heavy WIMP-Nucleon Cross Section
Chien-Yi Chen, Richard J. Hill, Mikhail P. Solon +1
WIMP-nucleon scattering is analyzed at order in Heavy WIMP Effective Theory. The power corrections, where is the WIMP mass, distinguish between different und…
CP-Violation in the Two Higgs Doublet Model: from the LHC to EDMs
Chien-Yi Chen, Hao-Lin Li, Michael Ramsey-Musolf
We study the prospective sensitivity to CP-violating Two Higgs Doublet Models from the 14 TeV LHC and future electric dipole moment (EDM) experiments. We concentrate on the search…