Abstract
We present the measured spin correlation coefficient \(C_{y,y}\) for p-\(^3\)He elastic scattering at 100 MeV at the angles \(\theta _\mathrm{c.m.}=46.9^\circ \)–\(149.2^\circ \) in the center of mass system. The experiment was performed using a 100 MeV polarized proton beam in conjunction with the polarized \(^3\)He target. Proton beams were injected to the target, and scattered protons were detected by using E-\(\Delta E\) detectors which consisted of plastic and NaI(Tl) scintillators. The data are compared with rigorous numerical calculations based on realistic NN potentials as well as with the \(\Delta \)-isobar excitation . The obtained results indicate that the \(C_{y,y}\) expands the knowledge of the nuclear interactions with \(\Delta \)-isobar or those including 3NFs that are masked in nucleon-deuteron elastic scattering.
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Acknowledgements
We acknowledge the great work of the RCNP accelerator group for delivering an excellent polarized beam. S.N. acknowledges support by GP-PU at Tohoku University. This work was supported financially in part by JSPS KAKENHI Grants No. JP25105502, No. JP16H02171, No. JP18H05404, and No. JP20H05636.
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A.W. wrote the mani manuscript text. K.S. and S.I. given important comments and insights in writing the paper. All other authors contributed to perform the experiment.
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Watanabe, A., Nakai, S., Sekiguchi, K. et al. Measurement of Spin Correlation Coefficient \({\varvec{C}}_{{\varvec{y}},{\varvec{y}}}\) for Proton-\(^{{\textbf {3}}}\)He Elastic Scattering. Few-Body Syst 65, 27 (2024). https://doi.org/10.1007/s00601-024-01891-8
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DOI: https://doi.org/10.1007/s00601-024-01891-8