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<p class="MsoNormal">Dear all,<o:p></o:p></p>
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<p class="MsoNormal">In lieu of our regular theory seminar, tomorrow, Monday May 22<sup>nd</sup>, there will be a CNF seminar. Please see the message from the CNF seminar organizers below for the details.<o:p></o:p></p>
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<p class="MsoNormal"><span class="xxcontentpasted0"><span style="font-size:12.0pt;color:black;background:white">Dear Colleagues,</span></span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span class="xxcontentpasted0"><span style="font-size:12.0pt;color:black;background:white">The Center for Nuclear Femtography will have a seminar on Monday May 22nd, 2023. The seminar will be held in person at Jefferson
Lab CC L102 for those that can attend in person.</span></span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span class="xxcontentpasted0"><b><span style="font-size:14.0pt;color:#ED5C57;background:white">11AM - 12:30PM Monday May 22nd, 2023</span></b></span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span class="contentpasted1"><b><span style="font-size:14.0pt;color:#ED5C57;background:white">Accessing GPDs using the dilepton final state: results and perspectives with CLAS12</span></b><span style="color:#ED5C57;background:white">:</span></span><span style="font-family:"-webkit-standard",serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:12.0pt;color:black">Pierre Chatagnon (Jefferson Lab)</span></b><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="color:black;background:white">Generalized Parton Distributions (GPDs) describe the correlations between the longitudinal momentum and the transverse position of the partons inside the nucleon. They
are nowadays the subject of an intense effort of research, in the perspective of understanding nucleon spin and the nucleon Gravitational Form Factors (GFFs). Experimentally, the main reaction to measure GPDs has been the Deeply Virtual Compton Scattering
(DVCS) reaction. In this talk, I will present complementary ways to access GPDs using the dilepton final state with the CLAS12 detector. First, I will present the first measurement of the Timelike Compton Scattering reaction (the hard photoproduction of a
lepton pair), that gives access to the GPDs via the beam polarization asymmetry and angular asymmetry of the electron/positron pair. This measurement was done using data taken in 2018 by the CLAS12 detector with a 10.6 GeV electron beam impinging on a liquid-hydrogen
target. I will then present the current effort to extract the near-threshold J/ø photoproduction cross section using the same dataset. This later measurement is expected to provide direct insight on the gluons GPDs of the proton.</span><b><span style="font-size:12.0pt;color:black"><o:p></o:p></span></b></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:12.0pt;color:black">JLab Announcement: <a href="https://www.jlab.org/cnf-seminar-pierre-chatagnon-0">https://www.jlab.org/cnf-seminar-pierre-chatagnon-0</a></span></b><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:12.0pt;color:black">Zoom link: <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__jlab-2Dorg.zoomgov.com_j_1601213226-3Fpwd-3DdUNRdHgvMm45bDZXWWM2Y2JYenlWQT09&d=DwMFCQ&c=CJqEzB1piLOyyvZjb8YUQw&r=dNeavDwcJ0aPy6gzcpNKTQ&m=sNo2LCen0BpVVIIFToVCr6fJy9L0Sk55UJ-W975wym5Qm4T9FnvHBLhgr22TjyYI&s=OFVHDCVI9kWGPj4dsiMJNXZ8G5QLO6PXxV75c_2CgWM&e=" target="_blank"><span style="background:white">https://jlab-org.zoomgov.com/j/1601213226?pwd=dUNRdHgvMm45bDZXWWM2Y2JYenlWQT09</span></a><o:p></o:p></span></b></p>
<p class="MsoNormal" style="background:white"><span style="font-size:11.5pt;color:black">Meeting ID: 160 121 3226<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span class="xcontentpasted2"><span style="font-size:11.5pt;color:black">Passcode: 934171</span></span><span style="font-size:11.5pt;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">We hope you can join us!<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Sincerely,<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span class="xxelementtoproof"><span style="font-size:12.0pt;color:black;background:white">CNF Seminar Committee</span></span><span style="font-family:"-webkit-standard",serif;color:black"><o:p></o:p></span></p>
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