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Dear all,
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<div class="">This is a reminder that tomorrow instead of the round table meeting we will have interview/seminar for a candidate for the Hall-B postdoc position, see below.</div>
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<div class="">Regards, Stepan <br class="">
<div><br class="">
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<div class="">Begin forwarded message:</div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">From:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">Eugene Pasyuk <<a href="mailto:pasyuk@jlab.org" class="">pasyuk@jlab.org</a>><br class="">
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">Subject:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class=""><b class="">March 16th interview seminar</b><br class="">
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">Date:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">March 13, 2022 at 4:13:04 PM EDT<br class="">
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">To:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">Andy Sandorfi <<a href="mailto:sandorfi@jlab.org" class="">sandorfi@jlab.org</a>>, Daniel Carman <<a href="mailto:carman@jlab.org" class="">carman@jlab.org</a>>,
Eugene Pasyuk <<a href="mailto:pasyuk@jlab.org" class="">pasyuk@jlab.org</a>>, Gagik Gavalian <<a href="mailto:gavalian@jlab.org" class="">gavalian@jlab.org</a>>, Harut Avagyan <<a href="mailto:avakian@jlab.org" class="">avakian@jlab.org</a>>, Latifa Elouadrhiri
<<a href="mailto:latifa@jlab.org" class="">latifa@jlab.org</a>>, Mac Mestayer <<a href="mailto:mestayer@jlab.org" class="">mestayer@jlab.org</a>>, Marco Battaglieri <<a href="mailto:battagli@jlab.org" class="">battagli@jlab.org</a>>, Maurizio Ungaro <<a href="mailto:ungaro@jlab.org" class="">ungaro@jlab.org</a>>,
Nathan Baltzell <<a href="mailto:baltzell@jlab.org" class="">baltzell@jlab.org</a>>, Sergey Boyarinov <<a href="mailto:boiarino@jlab.org" class="">boiarino@jlab.org</a>>, Stepan Stepanyan <<a href="mailto:stepanya@jlab.org" class="">stepanya@jlab.org</a>>,
Tsuneo Kageya <<a href="mailto:kageya@jlab.org" class="">kageya@jlab.org</a>>, Valery Kubarovsky <<a href="mailto:vpk@jlab.org" class="">vpk@jlab.org</a>>, Veronique Ziegler <<a href="mailto:ziegler@jlab.org" class="">ziegler@jlab.org</a>>, Viktor Mokeev <<a href="mailto:mokeev@jlab.org" class="">mokeev@jlab.org</a>>,
Volker Burkert <<a href="mailto:burkert@jlab.org" class="">burkert@jlab.org</a>>, Xiangdong Wei <<a href="mailto:xwei@jlab.org" class="">xwei@jlab.org</a>>, Youri Sharabian <<a href="mailto:youris@jlab.org" class="">youris@jlab.org</a>>, Yuri Gotra <<a href="mailto:gotra@jlab.org" class="">gotra@jlab.org</a>>,
Rafayel Paremuzyan <<a href="mailto:rafopar@jlab.org" class="">rafopar@jlab.org</a>>, William Phelps <<a href="mailto:wphelps@jlab.org" class="">wphelps@jlab.org</a>><br class="">
</span></div>
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<b class=""><span style="font-size: 26pt; line-height: 36.746665954589844px; font-family: "Times New Roman", serif; color: windowtext;" class="">Hall B virtual seminar<o:p class=""></o:p></span></b></h1>
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<span style="font-family: "Times New Roman", serif; color: windowtext;" class=""><o:p class=""> </o:p></span></h2>
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<b class=""><span style="font-size: 16pt; line-height: 22.61333465576172px; font-family: "Times New Roman", serif; color: windowtext;" class="">Jiwan Poudel<o:p class=""></o:p></span></b></h2>
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<b class=""><span style="font-size: 16pt; line-height: 22.61333465576172px; font-family: "Times New Roman", serif;" class="">Old Dominion University<o:p class=""></o:p></span></b></h3>
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<b class=""><span style="font-size: 12pt;" class=""><o:p class=""> </o:p></span></b></div>
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<i class=""><span style="font-size: 18pt; font-family: "Times New Roman", serif;" class="">Studies of BONuS12 Radial GEM Detector<o:p class=""></o:p></span></i></div>
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<i class=""><span style="font-size: 18pt; font-family: "Times New Roman", serif;" class="">and TCS Beam Spin Asymmetry in CLAS12<o:p class=""></o:p></span></i></div>
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<i class=""><span style="font-size: 18pt; font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></span></i></div>
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<span style="font-size: 13pt; font-family: "Times New Roman", serif;" class="">Abstract:<br class="">
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</span><span style="font-size: 12pt; font-family: "Times New Roman", serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 12pt; font-family: "Times New Roman", serif;" class="">The Barely Offshell Nucleon Structure (BONuS12) experiment adopted the concept of spectator tagging technique to study the nearly-free neutron structure function Fn2 in the CLAS12
of Jefferson Lab. A novel Radial Time Projection Chamber (RTPC) detector was built, tested, and integrated into the CLAS12 system to detect a back-moving low momentum tagged proton in d(e, ep)X deep-inelastic scattering. It was a 40 cm long gaseous detector
consisting of 3 layers of cylindrical GEM foils for the charge amplification, with the data readout directly from the surrounding padboard. The RTPC detected the recoiling spectator proton, in coincidence with the scattered. electron in the CLAS12.<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div>
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<span style="font-size: 12pt; font-family: "Times New Roman", serif;" class="">Nucleon structure functions are directly related to the partonic functions, quarks momentum distribution in one dimension. A Generalized Parton Distribution (GPD) came to the lime-light
as it encodes the information of both longitudinal momentum and transverse position of partons inside the nucleons. Factorization of the hard process such as DVCS allows to access GPDs. Timelike Compton Scattering (TCS), γp → γ</span><sup class=""><span style="font-size: 12pt; font-family: "Cambria Math", serif;" class="">∗</span></sup><span style="font-size: 12pt; font-family: "Times New Roman", serif;" class="">p,
is another process that allows to access the GPDs. TCS is studied experimentally in the CLAS12 of Jefferson lab using the quasi-real photoproduction of time-like photon which eventually decays to lepton pair. I will present the concept of spectator tagging
in BONuS12, and the research and development efforts during the BONuS12 preparation leading up to the successful data-taking during spring and summer 2020, with some preliminary analysis results. In addition, an analysis framework to extract the beam spin
asymmetry of TCS events through the CLAS12 Run group A data will also be presented.<o:p class=""></o:p></span></div>
<p class=""><span style="font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></span></p>
<p class=""><span style="font-size: 12pt; font-family: "Times New Roman", serif;" class=""><o:p class=""> </o:p></span></p>
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<b class=""><span style="font-family: "Times New Roman", serif;" class="">Wednesday, March 16, 2022<o:p class=""></o:p></span></b></div>
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<b class=""><span style="font-family: "Times New Roman", serif;" class="">2:30 pm - 3:30 pm<o:p class=""></o:p></span></b></div>
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<a href="https://jlab-org.zoomgov.com/j/1607816488?pwd=RGl2amxWanVISUNiOGR6cUtNZXhHdz09" title="https://jlab-org.zoomgov.com/j/1607816488?pwd=RGl2amxWanVISUNiOGR6cUtNZXhHdz09" style="color: rgb(5, 99, 193); text-decoration: underline;" class=""><span style="font-size: 9pt;" class="">https://jlab-org.zoomgov.com/j/1607816488?pwd=RGl2amxWanVISUNiOGR6cUtNZXhHdz09</span></a><span style="font-size: 9pt;" class=""><o:p class=""></o:p></span></div>
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<o:p class=""> </o:p></div>
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-Eugene</div>
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