Possible evidence of tensor interactions in 16O observed via (p,d) reaction

H. J. Ong; I. Tanihata; A. Tamii; T. Myo; K. Ogata; M. Fukuda; K. Hirota; K. Ikeda; D. Ishikawa; T. Kawabata; H. Matsubara; K. Matsuta; M. Mihara; T. Naito; D. Nishimura; Y. Ogawa; H. Okamura; A. Ozawa; D. Y. Pang; H. Sakaguchi; K. Sekiguchi; T. Suzuki; M. Taniguchi; M. Takashina; H. Toki; Y. Yasuda; M. Yosoi; J. Zenihiro

doi:10.1016/j.physletb.2013.07.038

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arXiv · 1205.4296

Possible evidence of tensor interactions in 16O observed via (p,d) reaction

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Abstract

We have measured 16O(p,d) reaction using 198-, 295- and 392-MeV proton beams to search for a direct evidence on the effect of the tensor interactions in light nucleus. Differential cross sections of the one-neutron transfer reactions populating the ground states and several low-lying excited states in 15O were measured. Comparing the ratios of the cross sections for each excited state to the one for the ground state over a wide range of momentum transfer, we found a marked enhancement for the positive-parity state(s). The observation indicates large components of high-momentum neutrons in the initial ground-state configurations, due possibly to the tensor interactions.

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H. J. Ong, I. Tanihata, A. Tamii, T. Myo, K. Ogata, M. Fukuda, K. Hirota, K. Ikeda, D. Ishikawa, T. Kawabata, H. Matsubara, K. Matsuta, M. Mihara, T. Naito, D. Nishimura, Y. Ogawa, H. Okamura, A. Ozawa, D. Y. Pang, H. Sakaguchi, K. Sekiguchi, T. Suzuki, M. Taniguchi, M. Takashina, H. Toki, Y. Yasuda, M. Yosoi, J. Zenihiro. 2012-05-19. Possible evidence of tensor interactions in 16O observed via (p,d) reaction. https://doi.org/10.1016/j.physletb.2013.07.038

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