<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear all, <br class=""><br class="">Here is a reminder for tomorrow's seminar at 1PM in Room L102: <br class=""><br class="">Matthew Sievert (Rutgers University), "Mapping Hadronic Structure at Small x"<br class="">BlueJeans connection: <a href="https://bluejeans.com/321085255" class="">https://bluejeans.com/321085255</a><br class=""><br class=""><i class="">Abstract:<br class="">The emergent properties of hadrons, such as the dynamical origin of the proton spin, always include “invisible” contributions beyond the reach of experiments. Because QCD sum rules, like the ones describing the proton spin budget, often require integrating observed quantities over the entire range of x from 0 to 1, they can be affected by contributions residing below the threshold xmin of any finite-energy experiment. For this reason, any complete picture of hadronic structure requires a robust theoretical framework which can systematically extrapolate experimental data into the asymptotic small-x regime. In this talk, I will present and solve the small-x quantum evolution equations describing a range of collinear and transverse-momentum-dependent parton distribution functions, including the unpolarized quark and gluon distributions, the quark and gluon helicity distributions, and the quark transversity distribution. These results, along with the general framework for computing the small-x asymptotics of various operators, can help estimate the “invisible” contributions hiding at small x and connect local operators computed on the lattice to observed parton distributions measured in experiments. Expanding this program and building the corresponding phenomenology will be a key part of delivering on the potential of a future electron-ion collider. </i><br class=""><div class=""><br class=""></div><div class="">Thank you.</div><div class="">-Carlota, Vincent and Raza</div></body></html>