Speaker
Nathan Sherrill
(Indiana University Bloomington)
Description
Proposed theories beyond the Standard Model (SM) can support the breaking of Lorentz and CPT symmetry. Searches for violations of these symmetries are often performed within the framework of the Standard Model Extension (SME), the most general effective field theory parametrizing CPT and Lorentz violation. The breaking of CPT and Lorentz symmetries in the SME is characterized by coefficients that couple to the usual SM fields. Thus far, searches within many areas of physics have resulted in numerous constraints on coefficients across all sectors of the SME. However, coefficients in the quark- and gluon-sectors remain largely unconstrained. This is in part due to the difficulty in connecting quark-level interactions to hadronic observables. Deep inelastic scattering (DIS) provides a setting where quark-sector coefficients can be directly accessed. In this work, we focus on the observable effects induced by a particular subset of CPT-even coefficients on the unpolarized electron-proton DIS cross-section. Bounds on the coefficients are extracted using pseudo-data mimicking the experimental probes attainable by the proposed EIC configuration at Jefferson Lab.
Primary author
Nathan Sherrill
(Indiana University Bloomington)
