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<div class="">Theory Center Seminar</div>
<div class="">Monday, July 27, 2015</div>
<div class="">1:00 p.m. (coffee at 12:45 p.m.)<br>
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<div class="">CEBAF Center, L102</div>
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<div class=""><b>Nuclear PDFs and Electroweak Boson Production
in Heavy Nuclei</b><br>
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<div class="">D.B. Clark<br>
Southern Methodist University</div>
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<div class="">Drell-Yan W/Z electroweak boson production at the
LHC is an essential standard candle which is used for<br>
calibration of beam luminosity and detector properties. In
addition to proton-proton collisions, the LHC <br>
has measured heavy nuclei lead-lead and proton-lead W/Z
production. Comparison of these data sets can<br>
provide discriminating information of the nuclear
modifications present in the Parton Distribution Functions
(PDFs).</div>
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<div class="">The nCTEQ collaboration has recently released the
nCTEQ15 set of nuclear PDFs (nPDFs) with Hessian error<br>
estimation sets for various values of A. These new nPDFs will
be presented along with an analysis of W/Z<br>
production in lead-lead and proton-lead collisions at the LHC.
Cross-sections are calculated at NLO with the <br>
FEWZ program at 2.76 and 5.02 TeV. We identify observables
where the nuclear modifications are larger than<br>
the predicted uncertainty, and we compare these calculations
to recent CMS measurements. </div>
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