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<div class="">Dear all,</div>
<div class="">here a reminder about today’s seminar.</div>
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<div class="">BlueJeans: <font color="#1a0a53" class=""><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_321085255_&d=DwMGaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=60nExCXZj9SCzny0kAZk-AjVzjr42OsgTZnvcFFHHk8&m=W4qZIG2MEFSGOQBGoCZHkcRqSuFBAi488tZm-2-pP9Y&s=l9A6hpPFdTg0hD1adX9yAbWbVCg7OGfwxpRqV4xCqYE&e=" class="">https://bluejeans.com/321085255/</a> </font></div>
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<div class=""><b class=""><span class="">Pawel </span>Sznajder<span class=""> (NCBJ Warsaw)</span></b></div>
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<div class=""><b class="">Extracting GPDs from DVCS data: Border and skewness functions at LO”</b></div>
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<div class="">The formalism of Generalized Parton Distributions (GPDs) provides a set of novel and powerful tools for the investigation of the nucleon structure. In particular, it allows to describe the nucleon as an extended object and it gives an access to
the QCD energy-momentum tensor. The latter allows to evaluate the contribution of orbital angular momentum to the nucleon spin through the so-called Ji’s sum rule and it helps to understand the distribution of "mechanical" forces acting on quarks.<br class="">
<br class="">
After a brief introduction to the GPD formalism our recent phenomenological studies will be reported. We propose new parameterizations for the border and skewness functions appearing in the description of the nucleon structure in the language of GPDs. These
parameterizations are constructed in a way to fulfill the basic properties of GPDs, like their reduction to Parton Density Functions and Elastic Form Factors. They also rely on the power behavior of GPDs in the x -> 1 limit and the propounded analyticity property
of Mellin moments of GPDs. We evaluate Compton Form Factors (CFFs), the sub-amplitudes of the Deeply Virtual Compton Scattering (DVCS) process, at the leading order and leading twist accuracy. We constrain the restricted number of free parameters of these
new parameterizations in a global CFF analysis of almost all existing proton DVCS measurements. The fit is performed within the PARTONS framework, being the modern tool for generic GPD studies.</div>
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<div class="">- Vincent</div>
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<div class="">Vincent Mathieu</div>
<div class="">Jefferson Lab Research Fellow</div>
<div class=""><a href="mailto:mathieuv@indiana.edu" class="">mathieuv@indiana.edu</a></div>
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<div class="">Joint Physics Analysis Center:</div>
<div class=""><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.indiana.edu_-7Ejpac_index.html&d=DwMGaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=60nExCXZj9SCzny0kAZk-AjVzjr42OsgTZnvcFFHHk8&m=W4qZIG2MEFSGOQBGoCZHkcRqSuFBAi488tZm-2-pP9Y&s=nL0ok28PmiVQZPf_5aC2MaUzz-DJUxngcX0ama-JAnA&e=" class="">http://www.indiana.edu/~jpac/index.html</a></div>
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<div class="">On Aug 19, 2018, at 1:47 PM, Alessandro Pilloni <<a href="mailto:pillaus@jlab.org" class="">pillaus@jlab.org</a>> wrote:</div>
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<div class=""><span style="background-color: rgb(255, 255, 255);" class="">Dear all,</span></div>
<div class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class="">
</span></div>
<div class=""><span style="background-color: rgb(255, 255, 255);" class="">tomorrow Monday, Aug 20, 1PM, Room L102</span><br class="">
we have <br class="">
<font color="#5856d6" class=""><br class="">
</font><b class=""><span class="">Pawel </span>Sznajder<span class=""> (NCBJ Warsaw)</span></b></div>
<div class="">
<div class="">
<div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div class="">
<div class=""><b class="">Extracting GPDs from DVCS data: Border and skewness functions at LO"</b></div>
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We will circulate the abstract soon</div>
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<div class=""> Alessandro, Andrea, Bipasha</div>
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