<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<div style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255)">
<font size="3">Dear all,<br>
<br>
Here is a reminder for<span> </span><span>seminars</span><span> </span><span><span>next</span></span><span> </span><span>week</span>:</font></div>
<div style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255)">
<font size="3"><span style="font-size: 12pt;"><u><b>Theory</b></u></span><u><b><span style="font-size: 12pt;"> </span><span style="font-size: 12pt;">seminar</span></b></u><span style="font-size: 12pt;"><u><b>:</b></u></span><br>
<span style="font-size: 12pt;">Monday, July 15, 1:00PM, Room L102</span><br>
<span style="color: rgb(32, 33, 36); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 12pt; background-color: rgba(255, 255, 255, 0.9); display: inline !important;">Shohini Bhattacharya (Temple University)
</span><span style="color: rgb(32, 33, 36); font-family: Roboto, RobotoDraft, Helvetica, Arial, sans-serif; font-size: 12pt; background-color: rgba(255, 255, 255, 0.9); display: inline !important;">"</span></font><span style="font-size: 12pt;">Quasi-GPDs for
quarks: model results and beyond " </span></div>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<div><br>
</div>
<span>Abstract:</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>Studying light-cone PDFs through Euclidean correlators is currently an active field of research. In particular, the concept of quasi parton distributions (quasi-PDFs) is at the forefront of numerical calculation of partonic structure of strongly interacting
systems on lattice using QCD. Quasi-PDFs converge to their respective standard distributions if the hadron momentum goes to infinity. We investigate this quasi-distribution approach for twist-2 generalized parton distributions (GPDs) in the widely-used diquark
spectator model. Our analytical expressions of the quasi-GPDs reduce to their corresponding standard ones in the large-momentum limit, affirming them to be practical tools to predict features of standard GPDs. We illustrate numerical results of quasi-GPDs
and of quasi-PDFs. Our focus is to test how well the quasi-distributions agree with their standard counterparts for finite hadron momenta. Furthermore, we explore higher-twist effects associated with the parton momentum and the longitudinal momentum transfer
to the target. By discussing the sensitivity of our results to model parameters, we highlight robust features of the quasi-GPDs and quasi-PDFs that one may extract from this model study. We also elaborate on a model-independent analysis of moments of quasi-distributions
including relation to Ji's spin-sum rule. The moment analysis suggests a preferred definition of several quasi-distributions.
</span><br>
</div>
<div id="Signature">
<div id="divtagdefaultwrapper" dir="ltr" style="font-size:12pt; color:#000000; font-family:Calibri,Helvetica,sans-serif">
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><span id="ms-rterangepaste-start"></span></p>
<pre cols="72" style="white-space:pre-wrap"><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; background-color: rgb(255, 255, 255); display: inline !important">Bluejeans connection: </span><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; margin: 0px; background-color: rgb(255, 255, 255)"><a href="https://bluejeans.com/610445877" target="_blank" style="color: rgb(17, 85, 204); margin: 0px">https://bluejeans.<wbr>com/610445877</a> </span><br></pre>
<pre cols="72" style="white-space:pre-wrap"><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; margin: 0px; background-color: rgb(255, 255, 255)"><br></span></pre>
<pre cols="72" style="white-space:pre-wrap"><span style="color: rgb(34, 34, 34); font-family: Arial, Helvetica, sans-serif; font-size: medium; margin: 0px; background-color: rgb(255, 255, 255)">Raza, Miguel, Carlota</span></pre>
<p style="margin-top: 0px; margin-bottom: 0px;"></p>
</div>
</div>
</body>
</html>