[Theory-seminars] Theory Seminar TODAY - Tim Hobbs

[Caroline Silva Rocha Costa]

Dear all,

Today, at 1:00pm EDT, we will have a remote seminar given by Tim Hobbs of Argonne National Lab on the unique Zoom for Government link: https://jlab-org.zoomgov.com/j/1604005049?pwd=b0trN2c1QjgxSUZOTUp6eWVpN0pldz09<https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1604005049-3Fpwd-3Db0trN2c1QjgxSUZOTUp6eWVpN0pldz09&d=DwMF-g&c=CJqEzB1piLOyyvZjb8YUQw&r=dNeavDwcJ0aPy6gzcpNKTQ&m=73WVTzsBYiKSeYsJleEy6cl_JCh6GewMxKIHvURczhKtO4xY8l_P6CdRBpxGDiO5&s=ioPxeFkCkxbn5bB7bJlXA-RMOeKMZWB0VBG4iQOp0eE&e=>

See below for details.

Theory Seminar: Wednesday, June 28th, 1pm EDT

Speaker: Tim Hobbs (ANL)

Title:  Fitted charm in CT18: the enduring nonperturbative charm problem

Abstract: As the lightest of the heavy flavors, the charm quark occupies a liminal space in QCD, transgressing the boundary separating perturbative and nonperturbative dynamics. Charm therefore plays a central role in efforts to refine QCD and our corresponding understanding of proton structure for experiments at the LHC and elsewhere. Within this context, I outline a stubborn problem in the theory of nucleon structure: the open question of whether the proton contains a significant nonperturbative (often called "intrinsic") charm component. I discuss some of the theoretical ambiguities that have kept this challenge alive while summarizing the findings of a recently published CTEQ-TEA analysis, the CT18 Fitted Charm (FC) study, which identified a need for more data --- for instance, from the Electron-Ion Collider --- to ultimately resolve this question.

See soon,
Carol, Joe, Patrick

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