Speaker
Dr
Timothy Hobbs
(University of Washington)
Description
The array of collider and fixed-target experiments either presently taking data or planned for the near future has renewed a focus on precise determinations of the proton's quark substructure as quantified by its parton distribution functions (PDFs). In this context, special focus has attached to the PDF of the charm quark, given its special relevance to, e.g., collider backgrounds and potential role in dark matter searches. At the same time, the charm PDF possesses a unique phenomenology in that it is generated mainly perturbatively, but also has the possibility for a nonperturbative (or intrinsic) component. In this talk I will describe the details of a recent QCD global analysis which found that existing data strongly constrain the total magnitude of the intrinsic charm PDFs predicted in various modeling scenarios. I will discuss the implications of this finding for ongoing theoretical work as well as for future experimental measurements.
Primary author
Dr
Timothy Hobbs
(University of Washington)
