Observation of Tensor-Driven High-Momentum Neutrons in ${}^{16}$O via ($p,d$) Reactions and Zero-Degree Deuteron Momentum Spectroscopy
Year: 2025
Type: preprint
Abstract: The $^{16}\mathrm{O}(p,d)^{15}\mathrm{O}$ reaction has been studied at $0^{\circ}$ using 403-, 604-, 907- and 1209-MeV protons, comparing cross sections populating positive- and negative-parity states in $^{15}\mathrm{O}$. Transitions to positive-parity states exhibit strong sensitivity to high-momentum neutrons, while negative-parity transitions show much smaller effects. The cross-section ratio between positive- and negative-parity states rises sharply with momentum transfer, matching theoretical predictions that include tensor interactions, particularly the peak near $2~\mathrm{fm}^{-1}$ for the $5/2^{+}$ to ground-state ratio. These results highlight $0^{\circ}$ neutron-pickup reactions as a sensitive probe for tensor-driven high-momentum components, paving the way for studies in exotic nuclei via radioactive beams.
Source: arXiv (Cornell University)
Authors: Wang, X., Ong, H. J., Terashima, S., Tanihata, I., Tanaka, Y. K., Aoi, N., Ayyad, Y., Benlliure, J., Farinon, F., Fujioka, H., Geissel, H., Gellanki, J., Guo, C. L., Haettner, E., Hai, W. L., Harakeh, M. N., Hornung, C., Itahashi, K., Janik, R., Kalantar-Nayestanaki, N., Knobel, R., Kurz, N., Miki, K., Mukha, I., Myo, T., Nishi, T., Pang, D. Y., Pietri, S., Prochazka, A., Rappold, C., Reiter, M. P., Rodriguez-Sanchez, J. L., Scheidenberger, C., Simon, H., Sitar, B., Strmen, P., Sun, B. H., Suzuki, K., Szarka, I., Toki, H., Weick, H., Widmann, E., Winfield, J. S., Xu, X. D, Zhao, J. W.
Institutions: Beihang University, The University of Osaka, Chinese Academy of Sciences, Institute of Modern Physics, RIKEN Advanced Science Institute, Universidade de Santiago de Compostela, MedAustron, Tokyo Institute of Technology, GSI Helmholtz Centre for Heavy Ion Research, Justus-Liebig-Universität Gießen, University of Groningen, National Cancer Center, RIKEN Nishina Center, Comenius University Bratislava, Tohoku University, Osaka Institute of Technology, Consejo Superior de Investigaciones Científicas, Instituto de Estructura de la Materia, Stefan Meyer Institute for Subatomic Physics, The University of Tokyo
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7076954200
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