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Arratia Research Group

Department of Physics & Astronomy

Nuclear tomography at JLab

We use the CLAS12 detector at Thomas Jefferson National Laboratory to investigate electron-nucleus interactions. Our group is at the forefront of using particle correlation techniques in nuclear deep-inelastic scattering. 
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Dihadron azimuthal correlations in deep-inelastic scattering (DIS) off nuclei
"The data show evidence that nuclear effects not only modify the hadron distributions, but also modify the correlations between multiple hadrons in the event"
S. J. Paul (CLAS Collaboration), Phys.Rev.Lett. 129 (2022) 18, 18
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"Our studies show how kinematic variables that depend on both hadrons, such as azimuthal separation and pair mass, can be used as a powerful tool for studying hadron production in electron scattering off nuclei"
S. J. Paul (CLAS Collaboration), Phys.Rev.Lett. 129 (2022) 18, 18
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"These results provide a reference for planned dihadron measurements in future experiments with higher beam energies at the Jefferson Laboratory and future electron-ion colliders in the USA and China"
S. J. Paul (CLAS Collaboration), Phys.Rev.Lett. 129 (2022) 18, 18
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CLAS12 Central Vertex Tracker (CVT). Silicon planar sensors and cylindrical micromegas sensors of two types
"This is the first time that the Kalman Filter algorithm has been adapted for use with hybrid technologies, non-parallel strips, and curved sensors"
S. J. Paul (CLAS Collaboration), Nucl.Instrum.Meth.A 1049 (2023) 168032
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"We achieved alignment at the level of 10 microns, and the widths of the residual spectra were greatly reduced"
S. J. Paul (CLAS Collaboration), Nucl.Instrum.Meth.A 1049 (2023) 168032
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"The methodology and results detailed in this work could serve as reference for alignment of the CLAS12 CVT for upcoming experiments, as well as for future experiments at the Electron-Ion Collider"
S. J. Paul (CLAS Collaboration), Nucl.Instrum.Meth.A 1049 (2023) 168032
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