Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV

A. Watanabe; S. Nakai; K. Sekiguchi; A. Deltuva; S. Goto; K. Hatanaka; Y. Hirai; T. Ino; D. Inomoto; M. Inoue; S. Ishikawa; M. Itoh; H. Kanda; H. Kasahara; Y. Maeda; K. Miki; K. Nonaka; H. J. Ong; H. Oshiro; D. Sakai; H. Sakai; S. Shibuya; D. T. Tran; H. Umetsu; Y. Utsuki; T. Wakasa

doi:10.1103/PhysRevC.106.054002

Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV

A. Watanabe, S. Nakai, K. Sekiguchi, A. Deltuva, S. Goto, K. Hatanaka, Y. Hirai, T. Ino, D. Inomoto, M. Inoue, S. Ishikawa, M. Itoh, H. Kanda, H. Kasahara, Y. Maeda, K. Miki, K. Nonaka, H. J. Ong, H. Oshiro, D. SakaiH. Sakai, S. Shibuya, D. T. Tran, H. Umetsu, Y. Utsuki, T. Wakasa

Experimental Particle Physics

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Abstract

We present the measured spin correlation coefficient Cy,y for p-He3 elastic scattering at 100 MeV at the angles θc.m.=46.9∘-149.2∘ in the center-of-mass system. The Cy,y data and the existing cross section data are compared with rigorous four-nucleon scattering calculations based on realistic nucleon-nucleon potentials. Large differences are seen in the regime around the cross section minimum for both observables. The Δ-isobar effects estimated by the NN+NΔ coupled-channels approach are small for the cross section. Meanwhile, in Cy,y, the Δ-isobar effects improve the agreement with the data. The analysis of the p-He3 elastic scattering amplitudes implies the necessity of three-nucleon forces (3NFs) that enhance the vector components in the amplitudes. The obtained results indicate that the spin correlation coefficient Cy,y expands the knowledge of the nuclear interactions with the Δ isobar or those including 3NFs that are masked in nucleon-deuteron elastic scattering.

Original language	English
Article number	054002
Journal	Physical Review C
Volume	106
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.106.054002
Publication status	Published - Nov 2022

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.106.054002

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Watanabe, A., Nakai, S., Sekiguchi, K., Deltuva, A., Goto, S., Hatanaka, K., Hirai, Y., Ino, T., Inomoto, D., Inoue, M., Ishikawa, S., Itoh, M., Kanda, H., Kasahara, H., Maeda, Y., Miki, K., Nonaka, K., Ong, H. J., Oshiro, H., ... Wakasa, T. (2022). Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV. Physical Review C, 106(5), [054002]. https://doi.org/10.1103/PhysRevC.106.054002

Watanabe, A, Nakai, S, Sekiguchi, K, Deltuva, A, Goto, S, Hatanaka, K, Hirai, Y, Ino, T, Inomoto, D, Inoue, M, Ishikawa, S, Itoh, M, Kanda, H, Kasahara, H, Maeda, Y, Miki, K, Nonaka, K, Ong, HJ, Oshiro, H, Sakai, D, Sakai, H, Shibuya, S, Tran, DT, Umetsu, H, Utsuki, Y & Wakasa, T 2022, 'Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV', Physical Review C, vol. 106, no. 5, 054002. https://doi.org/10.1103/PhysRevC.106.054002

@article{2911820aa85241fb8fcc7bb4a2b6f288,

title = "Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV",

abstract = "We present the measured spin correlation coefficient Cy,y for p-He3 elastic scattering at 100 MeV at the angles θc.m.=46.9∘-149.2∘ in the center-of-mass system. The Cy,y data and the existing cross section data are compared with rigorous four-nucleon scattering calculations based on realistic nucleon-nucleon potentials. Large differences are seen in the regime around the cross section minimum for both observables. The Δ-isobar effects estimated by the NN+NΔ coupled-channels approach are small for the cross section. Meanwhile, in Cy,y, the Δ-isobar effects improve the agreement with the data. The analysis of the p-He3 elastic scattering amplitudes implies the necessity of three-nucleon forces (3NFs) that enhance the vector components in the amplitudes. The obtained results indicate that the spin correlation coefficient Cy,y expands the knowledge of the nuclear interactions with the Δ isobar or those including 3NFs that are masked in nucleon-deuteron elastic scattering.",

author = "A. Watanabe and S. Nakai and K. Sekiguchi and A. Deltuva and S. Goto and K. Hatanaka and Y. Hirai and T. Ino and D. Inomoto and M. Inoue and S. Ishikawa and M. Itoh and H. Kanda and H. Kasahara and Y. Maeda and K. Miki and K. Nonaka and Ong, {H. J.} and H. Oshiro and D. Sakai and H. Sakai and S. Shibuya and Tran, {D. T.} and H. Umetsu and Y. Utsuki and T. Wakasa",

note = "Funding Information: We acknowledge the outstanding work of the accelerator groups RCNP for delivering an excellent polarized proton beam. S.N. acknowledges support by GP-PU at Tohoku University. The work of A.D. was supported by Lietuvos Mokslo Taryba (Research Council of Lithuania) under Contract No. S-MIP-22-72. Parts of computations were performed on the supercomputer “VU HPC” of Vilnius University, Faculty of Physics. This work was supported financially in part by JSPS KAKENHI Grants No. JP25105502, No. JP16H02171, No. JP18H05404, and No. JP20H05636. Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = nov,

doi = "10.1103/PhysRevC.106.054002",

language = "English",

volume = "106",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV

AU - Watanabe, A.

AU - Nakai, S.

AU - Sekiguchi, K.

AU - Deltuva, A.

AU - Goto, S.

AU - Hatanaka, K.

AU - Hirai, Y.

AU - Ino, T.

AU - Inomoto, D.

AU - Inoue, M.

AU - Ishikawa, S.

AU - Itoh, M.

AU - Kanda, H.

AU - Kasahara, H.

AU - Maeda, Y.

AU - Miki, K.

AU - Nonaka, K.

AU - Ong, H. J.

AU - Oshiro, H.

AU - Sakai, D.

AU - Sakai, H.

AU - Shibuya, S.

AU - Tran, D. T.

AU - Umetsu, H.

AU - Utsuki, Y.

AU - Wakasa, T.

N1 - Funding Information: We acknowledge the outstanding work of the accelerator groups RCNP for delivering an excellent polarized proton beam. S.N. acknowledges support by GP-PU at Tohoku University. The work of A.D. was supported by Lietuvos Mokslo Taryba (Research Council of Lithuania) under Contract No. S-MIP-22-72. Parts of computations were performed on the supercomputer “VU HPC” of Vilnius University, Faculty of Physics. This work was supported financially in part by JSPS KAKENHI Grants No. JP25105502, No. JP16H02171, No. JP18H05404, and No. JP20H05636. Publisher Copyright: © 2022 American Physical Society.

PY - 2022/11

Y1 - 2022/11

N2 - We present the measured spin correlation coefficient Cy,y for p-He3 elastic scattering at 100 MeV at the angles θc.m.=46.9∘-149.2∘ in the center-of-mass system. The Cy,y data and the existing cross section data are compared with rigorous four-nucleon scattering calculations based on realistic nucleon-nucleon potentials. Large differences are seen in the regime around the cross section minimum for both observables. The Δ-isobar effects estimated by the NN+NΔ coupled-channels approach are small for the cross section. Meanwhile, in Cy,y, the Δ-isobar effects improve the agreement with the data. The analysis of the p-He3 elastic scattering amplitudes implies the necessity of three-nucleon forces (3NFs) that enhance the vector components in the amplitudes. The obtained results indicate that the spin correlation coefficient Cy,y expands the knowledge of the nuclear interactions with the Δ isobar or those including 3NFs that are masked in nucleon-deuteron elastic scattering.

AB - We present the measured spin correlation coefficient Cy,y for p-He3 elastic scattering at 100 MeV at the angles θc.m.=46.9∘-149.2∘ in the center-of-mass system. The Cy,y data and the existing cross section data are compared with rigorous four-nucleon scattering calculations based on realistic nucleon-nucleon potentials. Large differences are seen in the regime around the cross section minimum for both observables. The Δ-isobar effects estimated by the NN+NΔ coupled-channels approach are small for the cross section. Meanwhile, in Cy,y, the Δ-isobar effects improve the agreement with the data. The analysis of the p-He3 elastic scattering amplitudes implies the necessity of three-nucleon forces (3NFs) that enhance the vector components in the amplitudes. The obtained results indicate that the spin correlation coefficient Cy,y expands the knowledge of the nuclear interactions with the Δ isobar or those including 3NFs that are masked in nucleon-deuteron elastic scattering.

UR - http://www.scopus.com/inward/record.url?scp=85143757992&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85143757992&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.106.054002

DO - 10.1103/PhysRevC.106.054002

M3 - Article

AN - SCOPUS:85143757992

VL - 106

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 5

M1 - 054002

ER -

Spin correlation coefficient for proton- He 3 elastic scattering at 100 MeV

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