<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Dear NPWG members,</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Please have a look at the enclosed APS DNP abstract by Brandon Tumeo and Sebouh Paul and send them any feedback you might have. The abstract submission deadline is the upcoming Thursday, July 1st. </div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">************</div><div class="gmail_default" style="font-family:tahoma,sans-serif">Abstract 1: <span class="gmail_default" style="font-size:12pt;color:rgb(0,0,0)">"F</span><span style="font-size:12pt;color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif">easibility Study for
</span><span style="font-size:12pt;color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif">Λd</span><span style="font-size:12pt;color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif"> Elastic Scattering" by Brandon</span></div><div class="gmail_default" style=""><font color="#000000" face="Calibri, Arial, Helvetica, sans-serif"><span style="font-size:16px">**********</span></font></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<span style="font-size:12pt">Experimental observables of Λ-deuteron (Λd) elastic scattering are expected to provide unique and independent constraints on several poorly-known dynamical parameters
of the hyperon-nucleon interaction, such as the Λ<i>N </i>spin-triplet scattering length and of the Λ<i>NN
</i>three-body force. Yet, Λd experimental data are non-existent. In this work, we present a feasibility study of Λd elastic scattering using the high-luminosity Jefferson Lab experiment E06-103, in which a real-photon beam was incident on a 40-cm long liquid
deuterium target. The data were taken with the CEBAF Large Acceptance Spectrometer (CLAS) housed in Hall B. The Λ beam is produced in photoproduction off a deuteron and then scattered elastically off another deuteron. By detecting the final-state deuteron,
and the proton and pion from Λ decay, reconstruction of the scattered and beam Λ invariant masses, and reaction selection was possible. Our analysis shows that the data set contains about 4000 Λd elastic events, covering Λ beam momenta between 600 MeV/c and
1000 MeV/c and Λ center-of-mass cos(theta) between -0.6 and +0.8. Thus, for the first time, the Λd elastic differential and total cross sections will be extracted.
</span><br>
<span style="font-size:12pt"></span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"></div><div><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif"></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><div class="gmail_default">************</div><div class="gmail_default">Abstract 2: <span class="gmail_default" style="font-size:12pt;color:rgb(0,0,0)">"</span><span style="font-family:Arial,Helvetica,sans-serif">Di-hadron azimuthal correlations in </span><em style="font-family:Arial,Helvetica,sans-serif">e<sup>-</sup>A</em><span style="font-family:Arial,Helvetica,sans-serif"> DIS with CLAS</span><span style="color:rgb(0,0,0);font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt">" by Sebouh</span></div><div class="gmail_default"><font color="#000000" face="Calibri, Arial, Helvetica, sans-serif"><span style="font-size:16px">**********</span></font></div></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><span style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif">We present a measurement of the nuclear dependence of di-hadron production in deep inelastic scattering off nuclei using the CLAS detector at Jefferson Lab. We report results on the conditional suppression factor for charged pions using carbon, iron and lead data. By comparing our results with single-hadron measurements, we can constrain correlations created by nuclear effects. Our results are much more precise than the HERMES data (PRL 96, 162301) and include hadron identification. We also complement the HERMES measurements by reporting the first measurement of azimuthal and rapidity correlations in DIS, which shows a strong suppression for back-to-back pion pairs in nuclei, whereas there is an enhancement for such pairs where the azimuthal and rapidity separations are both small. This represents a new type of study in electron-nucleus collisions and serves as a pathfinder for future experiments with CLAS12 and the Electron-Ion Collider.</span></div><div class="gmail_default" style="font-family:tahoma,sans-serif">-------------------------------------</div><br><br>Best,<br><br>Lamiaa<br><br><span><div dir="ltr"><span><div>*****************************************************************************<br>* Assoc. Prof. Lamiaa El Fassi / email: <a href="mailto:le334@msstate.edu" target="_blank">le334@msstate.edu</a><br>
*****************************************************************************<br></div><div>* Phone: <a value="+17572696526">(662) 325-0627 / Fax: <span><span></span></span></a><a value="+17572696526">(662) 325-8898<br></a></div><div>* URL: <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__le334.physics.msstate.edu_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=oFpNaB86z9R0_Cm6JnqHFw&m=7SqEmf4Mol9VX8TCdIeWEl_-D29NlEdCYPSpV7sLm-4&s=FGKVHJViDHlcOgujBRdqEXl5ZbCEYQ-mlXdodJBYRfs&e=" style="display:inline-flex" target="_blank">http://le334.physics.msstate.edu/
<i style="background-image:url()"></i>
<i style="background-image:url(chrome-extension://bdbgahnlbdodjkejgilbpflbhgchdfni/assets/img/global/injectable/icons/checked.png)" class="has-tip safe-search-icon"></i>
</a> <br></div><div><span><span>* Department of Physics and Astronomy</span></span> </div>* 355 Lee Blvd, 125 Hilbun Hall<br></span></div><div dir="ltr"><span><div>* P.O.Box 5167</div><div>* Mississippi State, MS 39762</div><div><img src="https://docs.google.com/uc?export=download&id=1fLI5pld9Aw61zWye2b9xO3McyQqMNO-5&revid=0B6fIwWx3f5DXWVV0NzJGVkhGYnpwZGNXNWlsaGJINEhVTUpJPQ" width="420" height="136"></div><div>********************************************************************************</div></span></div></span></div></div></div></div></div></div></div></div></div></div></div></div>