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Hello All,</div>
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<div>This coming Monday, September 19th at 1:00 PM (EDT), Peter Risse will give our
<span style="background-color: rgb(255, 255, 0);">first hybrid theory</span> seminar of the Fall term.</div>
<div>If you will be on-site and are comfortable doing so, please join us in room F224/225 of CEBAF Center. Otherwise, Peter's seminar will also be provided virtually on our usual ZoomGov link:
<a href="https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09" data-auth="NotApplicable" id="LPlnkOWALinkPreview">
https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09</a>
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<div>Please see below for the title and abstract of Peter's talk.</div>
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<div><u><b>Theory Seminar</b></u></div>
<div>Monday, September 19th at 1:00 PM</div>
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<div><u><b>Peter Risse</b></u> (University of M<font face="Liberation Serif, serif">ü</font>nster)</div>
<div>will discuss "Towards a Markov Chain Monte Carlo investigation of nuclear PDFs"</div>
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<div><u><b>Abstract:</b></u> Nuclear parton distribution functions (nPDFs) describe the</div>
<div>structure of nuclei as composed of quarks and gluons. They are a key</div>
<div>element in making predictions for collider experiments. Due to their</div>
<div>non-perturbative nature, the extraction of nPDFs relies on a global</div>
<div>analysis of multiple hard scattering processes, such as deep inelastic</div>
<div>scattering (DIS), Drell-Yan (DY), lepton pair production and inclusive</div>
<div>jet production. In this talk, we investigate the use of Markov Chain</div>
<div>Monte Carlo methods as an alternative fitting procedure in order to</div>
<div>infer the nPDFs from the available experimental data. Monte Carlo</div>
<div>simulations are computationally costly. Therefore we have to optimize</div>
<div>the evaluation speed of physical observables. Especially the prediction</div>
<div>in the DIS sector has to be improved, since it makes up the bulk of the</div>
<div>experimental data. Here we will focus on the treatment of heavy quark</div>
<div>effects in the predictions.</div>
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<div>Have a pleasant weekend!</div>
Caroline, Colin & Patrick<br>
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