Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He

S. Chebotaryov; S. Sakaguchi; T. Uesaka; T. Akieda; Y. Ando; M. Assie; D. Beaumel; N. Chiga; M. Dozono; A. Galindo-Uribarri; B. Heffron; A. Hirayama; T. Isobe; K. Kaki; S. Kawase; W. Kim; T. Kobayashi; H. Kon; Y. Kondo; Y. Kubota; S. Leblond; H. Lee; T. Lokotko; Y. Maeda; Y. Matsuda; K. Miki; E. Milman; T. Motobayashi; T. Mukai; S. Nakai; T. Nakamura; A. Ni; T. Noro; S. Ota; H. Otsu; T. Ozaki; V. Panin; S. Park; A. Saito; H. Sakai; M. Sasano; H. Sato; K. Sekiguchi; Y. Shimizu; I. Stefan; L. Stuhl; M. Takaki; K. Taniue; K. Tateishi; S. Terashima; Y. Togano; T. Tomai; Y. Wada; T. Wakasa; T. Wakui; A. Watanabe; H. Yamada; Zh Yang; M. Yasuda; J. Yasuda; K. Yoneda; J. Zenihiro

doi:10.1093/ptep/pty048

Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He

S. Chebotaryov, S. Sakaguchi, T. Uesaka, T. Akieda, Y. Ando, M. Assie, D. Beaumel, N. Chiga, M. Dozono, A. Galindo-Uribarri, B. Heffron, A. Hirayama, T. Isobe, K. Kaki, S. Kawase, W. Kim, T. Kobayashi, H. Kon, Y. Kondo, Y. KubotaS. Leblond, H. Lee, T. Lokotko, Y. Maeda, Y. Matsuda, K. Miki, E. Milman, T. Motobayashi, T. Mukai, S. Nakai, T. Nakamura, A. Ni, T. Noro, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Park, A. Saito, H. Sakai, M. Sasano, H. Sato, K. Sekiguchi, Y. Shimizu, I. Stefan, L. Stuhl, M. Takaki, K. Taniue, K. Tateishi, S. Terashima, Y. Togano, T. Tomai, Y. Wada, T. Wakasa, T. Wakui, A. Watanabe, H. Yamada, Zh Yang, M. Yasuda, J. Yasuda, K. Yoneda, J. Zenihiro

Neutrino Research

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Abstract

Differential cross sections of p-6He elastic scattering were measured in inverse kinematics at an incident energy of 200 A MeV, covering the high momentum transfer region of 1.7-2.7 -1. The sensitivity of the elastic scattering at low and high momentum transfers to the density distribution was investigated quantitatively using relativistic impulse approximation calculations. In the high momentum transfer region, where the present data were taken, the differential cross section has an order of magnitude higher sensitivity to the inner part of the 6He density relative to the peripheral part (15:1). This feature makes the obtained data valuable for the deduction of the inner part of the 6He density. The data were compared to a set of calculations assuming different proton and neutron density profiles of 6He. The data are well reproduced by the calculation assuming almost the same profiles of proton and neutron densities around the center of 6He, and a proton profile reproducing the known point-proton radius of 1.94 fm. This finding is consistent with the assumption that the 6He nucleus consists of a rigid α-like core with a two-neutron halo.

Original language	English
Article number	053D01
Journal	Progress of Theoretical and Experimental Physics
Volume	2018
Issue number	5
DOIs	https://doi.org/10.1093/ptep/pty048
State	Published - May 1 2018

Funding

We express our gratitude to the RIKEN and CNS staff for the operation of the accelerators during the measurement. We would like to thank P. Egelhof and O. Kiselev from GSI Helmholtzzentrum für Schwe-rionenforschung, D. Khoa and X. Chung from the Institute for Nuclear Sciences and Technology (INST), VINATOM, and H. Sakaguchi from Osaka University for fruitful discussions. We are also grateful to Ohyo Koken Kogyo Co. Ltd for producing large and high-quality single crystals of naphthalene, CNS for providing experimental devices, and Teijin DuPont for providing a window film for helium filling. In this research work, we used the supercomputer of ACCMS, Kyoto University. This work was supported by JSPS KAKENHI Grant Numbers JP25800155, JP16K05380, JP16K17719 and the National Research Foundation of Korea Grant Number 2016K1A3A7A09005577.

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10.1093/ptep/pty048

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Chebotaryov, S., Sakaguchi, S., Uesaka, T., Akieda, T., Ando, Y., Assie, M., Beaumel, D., Chiga, N., Dozono, M., Galindo-Uribarri, A., Heffron, B., Hirayama, A., Isobe, T., Kaki, K., Kawase, S., Kim, W., Kobayashi, T., Kon, H., Kondo, Y., ... Zenihiro, J. (2018). Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He. Progress of Theoretical and Experimental Physics, 2018(5), Article 053D01. https://doi.org/10.1093/ptep/pty048

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title = "Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He",

abstract = "Differential cross sections of p-6He elastic scattering were measured in inverse kinematics at an incident energy of 200 A MeV, covering the high momentum transfer region of 1.7-2.7 -1. The sensitivity of the elastic scattering at low and high momentum transfers to the density distribution was investigated quantitatively using relativistic impulse approximation calculations. In the high momentum transfer region, where the present data were taken, the differential cross section has an order of magnitude higher sensitivity to the inner part of the 6He density relative to the peripheral part (15:1). This feature makes the obtained data valuable for the deduction of the inner part of the 6He density. The data were compared to a set of calculations assuming different proton and neutron density profiles of 6He. The data are well reproduced by the calculation assuming almost the same profiles of proton and neutron densities around the center of 6He, and a proton profile reproducing the known point-proton radius of 1.94 fm. This finding is consistent with the assumption that the 6He nucleus consists of a rigid α-like core with a two-neutron halo.",

author = "S. Chebotaryov and S. Sakaguchi and T. Uesaka and T. Akieda and Y. Ando and M. Assie and D. Beaumel and N. Chiga and M. Dozono and A. Galindo-Uribarri and B. Heffron and A. Hirayama and T. Isobe and K. Kaki and S. Kawase and W. Kim and T. Kobayashi and H. Kon and Y. Kondo and Y. Kubota and S. Leblond and H. Lee and T. Lokotko and Y. Maeda and Y. Matsuda and K. Miki and E. Milman and T. Motobayashi and T. Mukai and S. Nakai and T. Nakamura and A. Ni and T. Noro and S. Ota and H. Otsu and T. Ozaki and V. Panin and S. Park and A. Saito and H. Sakai and M. Sasano and H. Sato and K. Sekiguchi and Y. Shimizu and I. Stefan and L. Stuhl and M. Takaki and K. Taniue and K. Tateishi and S. Terashima and Y. Togano and T. Tomai and Y. Wada and T. Wakasa and T. Wakui and A. Watanabe and H. Yamada and Zh Yang and M. Yasuda and J. Yasuda and K. Yoneda and J. Zenihiro",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2018.",

year = "2018",

month = may,

day = "1",

doi = "10.1093/ptep/pty048",

language = "English",

volume = "2018",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

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Chebotaryov, S, Sakaguchi, S, Uesaka, T, Akieda, T, Ando, Y, Assie, M, Beaumel, D, Chiga, N, Dozono, M, Galindo-Uribarri, A, Heffron, B, Hirayama, A, Isobe, T, Kaki, K, Kawase, S, Kim, W, Kobayashi, T, Kon, H, Kondo, Y, Kubota, Y, Leblond, S, Lee, H, Lokotko, T, Maeda, Y, Matsuda, Y, Miki, K, Milman, E, Motobayashi, T, Mukai, T, Nakai, S, Nakamura, T, Ni, A, Noro, T, Ota, S, Otsu, H, Ozaki, T, Panin, V, Park, S, Saito, A, Sakai, H, Sasano, M, Sato, H, Sekiguchi, K, Shimizu, Y, Stefan, I, Stuhl, L, Takaki, M, Taniue, K, Tateishi, K, Terashima, S, Togano, Y, Tomai, T, Wada, Y, Wakasa, T, Wakui, T, Watanabe, A, Yamada, H, Yang, Z, Yasuda, M, Yasuda, J, Yoneda, K & Zenihiro, J 2018, 'Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He', Progress of Theoretical and Experimental Physics, vol. 2018, no. 5, 053D01. https://doi.org/10.1093/ptep/pty048

TY - JOUR

T1 - Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He

AU - Chebotaryov, S.

AU - Sakaguchi, S.

AU - Uesaka, T.

AU - Akieda, T.

AU - Ando, Y.

AU - Assie, M.

AU - Beaumel, D.

AU - Chiga, N.

AU - Dozono, M.

AU - Galindo-Uribarri, A.

AU - Heffron, B.

AU - Hirayama, A.

AU - Isobe, T.

AU - Kaki, K.

AU - Kawase, S.

AU - Kim, W.

AU - Kobayashi, T.

AU - Kon, H.

AU - Kondo, Y.

AU - Kubota, Y.

AU - Leblond, S.

AU - Lee, H.

AU - Lokotko, T.

AU - Maeda, Y.

AU - Matsuda, Y.

AU - Miki, K.

AU - Milman, E.

AU - Motobayashi, T.

AU - Mukai, T.

AU - Nakai, S.

AU - Nakamura, T.

AU - Ni, A.

AU - Noro, T.

AU - Ota, S.

AU - Otsu, H.

AU - Ozaki, T.

AU - Panin, V.

AU - Park, S.

AU - Saito, A.

AU - Sakai, H.

AU - Sasano, M.

AU - Sato, H.

AU - Sekiguchi, K.

AU - Shimizu, Y.

AU - Stefan, I.

AU - Stuhl, L.

AU - Takaki, M.

AU - Taniue, K.

AU - Tateishi, K.

AU - Terashima, S.

AU - Togano, Y.

AU - Tomai, T.

AU - Wada, Y.

AU - Wakasa, T.

AU - Wakui, T.

AU - Watanabe, A.

AU - Yamada, H.

AU - Yang, Zh

AU - Yasuda, M.

AU - Yasuda, J.

AU - Yoneda, K.

AU - Zenihiro, J.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Differential cross sections of p-6He elastic scattering were measured in inverse kinematics at an incident energy of 200 A MeV, covering the high momentum transfer region of 1.7-2.7 -1. The sensitivity of the elastic scattering at low and high momentum transfers to the density distribution was investigated quantitatively using relativistic impulse approximation calculations. In the high momentum transfer region, where the present data were taken, the differential cross section has an order of magnitude higher sensitivity to the inner part of the 6He density relative to the peripheral part (15:1). This feature makes the obtained data valuable for the deduction of the inner part of the 6He density. The data were compared to a set of calculations assuming different proton and neutron density profiles of 6He. The data are well reproduced by the calculation assuming almost the same profiles of proton and neutron densities around the center of 6He, and a proton profile reproducing the known point-proton radius of 1.94 fm. This finding is consistent with the assumption that the 6He nucleus consists of a rigid α-like core with a two-neutron halo.

AB - Differential cross sections of p-6He elastic scattering were measured in inverse kinematics at an incident energy of 200 A MeV, covering the high momentum transfer region of 1.7-2.7 -1. The sensitivity of the elastic scattering at low and high momentum transfers to the density distribution was investigated quantitatively using relativistic impulse approximation calculations. In the high momentum transfer region, where the present data were taken, the differential cross section has an order of magnitude higher sensitivity to the inner part of the 6He density relative to the peripheral part (15:1). This feature makes the obtained data valuable for the deduction of the inner part of the 6He density. The data were compared to a set of calculations assuming different proton and neutron density profiles of 6He. The data are well reproduced by the calculation assuming almost the same profiles of proton and neutron densities around the center of 6He, and a proton profile reproducing the known point-proton radius of 1.94 fm. This finding is consistent with the assumption that the 6He nucleus consists of a rigid α-like core with a two-neutron halo.

UR - http://www.scopus.com/inward/record.url?scp=85047057954&partnerID=8YFLogxK

U2 - 10.1093/ptep/pty048

DO - 10.1093/ptep/pty048

M3 - Article

AN - SCOPUS:85047057954

SN - 2050-3911

VL - 2018

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 5

M1 - 053D01

ER -

Proton elastic scattering at 200 A MeV and high momentum transfers of 1.7-2.7 fm -1 as a probe of the nuclear matter density of 6 He

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