<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><font size="3" class="">Dear All, </font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class="">Here is a reminder for the seminars next week:</font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" color="#0061ff" class=""><u style="font-family: Calibri, Helvetica, sans-serif;" class="">Theory </u><span class="il" style="font-family: Calibri, Helvetica, sans-serif; text-decoration-line: underline;">seminar</span><u style="font-family: Calibri, Helvetica, sans-serif;" class="">: </u><span style="font-family: Calibri, Helvetica, sans-serif;" class="">Monday, April 29, 1:00PM, Room L102</span></font></div><div class=""><font size="3" color="#0061ff" class=""><span style="font-family: Calibri, Helvetica, sans-serif;" class=""><br class=""></span></font></div><div class=""><font size="3" class="">Bluejeans connection: <a href="https://bluejeans.com/610445877" class="">https://bluejeans.com/610445877</a></font></div><div class=""><br class=""></div><div class=""><font size="3" class=""><b class="">Aaron Meyer (BNL)</b>, “<span style="background-color: rgb(255, 255, 255);" class="">Pion Scattering to g-2 and Neutrino Physics in Lattice QCD</span>”</font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class="">Abstract:<br style="background-color: rgb(255, 255, 255);" class=""><span style="background-color: rgb(255, 255, 255);" class="">Long-baseline neutrino oscillation experiments of the upcoming decade require precision measurements of many interaction topologies over a wide range of energies. Among these interactions are multiparticle final states obtained from resonance intermediate states. These weak matrix elements are difficult to extract experimentally, since they are either probed by processes with small cross sections or are subject to model assumptions. As an alternative, lattice QCD may be used to extract the relevant matrix elements from first-principles calculations, sidestepping both of these potential issues.</span><br style="background-color: rgb(255, 255, 255);" class=""><br style="background-color: rgb(255, 255, 255);" class=""><span style="background-color: rgb(255, 255, 255);" class="">In this talk, I will discuss the difficulties that face neutrino oscillation physics over the timescale of the DUNE experiment and the necessity for clean descriptions of nucleon transitions to multiparticle states. I will also show preliminary results from the RBC+UKQCD collaboration to compute pion scattering using lattice QCD at physical pion mass. These calculations are used to compute the hadronic vacuum polarization contribution to the muon anomalous magnetic moment and pion scattering phase shifts. Pion scattering is an ideal simplified environment to study the effects of multiparticle scattering in a finite, periodic volume. These types of studies will be necessary to compute the transition matrix elements needed by neutrino oscillation physics.</span><br class=""><span style="font-family: Calibri, Helvetica, sans-serif;" class=""></span></font><p style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Helvetica, sans-serif;" class=""></p><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Helvetica, sans-serif;" class=""><font size="3" class=""><br class=""></font></div></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><div class=""><font size="3" color="#0061ff" class=""><u style="font-family: Calibri, Helvetica, sans-serif;" class="">Cake </u><span class="il" style="font-family: Calibri, Helvetica, sans-serif; text-decoration-line: underline;">seminar</span><u style="font-family: Calibri, Helvetica, sans-serif;" class="">: </u><span style="font-family: Calibri, Helvetica, sans-serif;" class="">Wednesday, May 1, 1:00PM, Room F324-325</span></font></div><div class=""><font size="3" color="#0061ff" class=""><span style="font-family: Calibri, Helvetica, sans-serif;" class=""><br class=""></span></font></div><div class=""><font size="3" class="">Bluejeans connection: <a href="https://bluejeans.com/610445877" class="">https://bluejeans.com/610445877</a></font></div></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class=""><span role="heading" aria-level="1" id="rAECCd" class=""><b class="">Filippo Delcarro (JLAB)</b>, “</span>Phenomenological analysis of the 3D nucleon structure”</font></div><div class=""><font size="3" class=""><br class=""></font></div><div class=""><font size="3" class="">Abstract: </font></div><div class=""><font size="3" class="">Transverse Momentum Dependent (TMD) distributions allow us to investigate the three-dimensional structure of nucleons. They cannot be computed directly from fundamental principle due to their nonperturbative nature and it is then necessary to extract them from experimental data.<br class="">A recent determination of two fundamental partonic TMDs, the unpolarized and the Sivers function distributions, from scattering observables will be presented, discussing in particular how their parametrization is affected by energy scale variations. <br class="">We will show that, through these distributions, it is possible to obtain a picture of the proton internal structure .</font></div><div class=""><span role="heading" aria-level="1" class=""><br class=""></span></div><div class=""><span role="heading" aria-level="1" class=""><br class=""></span></div><div class=""><span role="heading" aria-level="1" class=""><font size="3" class="">Thank you.</font></span></div><div class=""><span role="heading" aria-level="1" class=""><font size="3" class="">Carlota, Miguel and Raza</font></span></div></body></html>