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<div class="" style="font-family: AvenirNext-Regular;"><span class="">Dear all,</span></div>
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Tomorrow we will have a Theory Seminar starting at <b class="">13:00</b>.</span><span class="" style="font-family: AvenirNext-Regular;"></span><span style="font-family: AvenirNext-Regular;" class=""></span>
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<div class="" style="font-family: AvenirNext-Regular;">Please see below for the details:</div>
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<div class="" style="font-family: AvenirNext-Regular;"><b class="">Bluejeans connection:</b> <a href="https://bluejeans.com/801786278" class="">https://bluejeans.com/801786278</a></div>
<div class="" style="font-family: AvenirNext-Regular;"><b class="">Date and time: </b>Monday October 19th, 13:00 EDT</div>
<div class=""><span class=""><b class="" style="font-family: AvenirNext-Regular;">Speaker: </b></span><font face="AvenirNext-Regular" class="">Andrey Tarasov (Ohio State University)</font><span style="font-family: AvenirNext-Regular;" class=""> </span></div>
<div class="" style="font-family: AvenirNext-Regular;"><b class="">Title: </b><span class="">The role of the axial anomaly in polarized deep inelastic scattering</span></div>
<div class=""><b class="" style="font-family: AvenirNext-Regular;">Abstract: </b><font face="AvenirNext-Regular" class="">I’ll discuss the role of the chiral anomaly in deeply inelastic scattering (DIS) of electrons off polarized protons employing a worldline
formalism, which is a powerful framework for the computation of perturbative multi-leg Feynman amplitudes. I’ll demonstrate how the triangle anomaly appears at high energies in the DIS box diagram for the polarized structure function g_1(x_B,Q^2) in both the
Bjorken limit of large Q^2 and in the Regge limit of small x_B. I’ll show that the operator product expansion is not required to extract the anomaly in either asymptotics, and the infrared pole in the anomaly arises in both limits. The leading contribution
to g_1, in both Bjorken and Regge asymptotics, is therefore given by the expectation value of the topological charge density.</font></div>
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<div class="" style="font-family: AvenirNext-Regular;"><span class="">See you all there!</span></div>
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Best regards,<br class="">
Astrid, Christos, Filippo</span></div>
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