A drop in the Li6(p,γ)Be7 reaction at low energies

J. J. He; S. Z. Chen; C. E. Rolfs; S. W. Xu; J. Hu; X. W. Ma; M. Wiescher; R. J. deBoer; T. Kajino; M. Kusakabe; L. Y. Zhang; S. Q. Hou; X. Q. Yu; N. T. Zhang; G. Lian; Y. H. Zhang; X. H. Zhou; H. S. Xu; G. Q. Xiao; W. L. Zhan

doi:10.1016/j.physletb.2013.07.044

A drop in the Li6(p,γ)Be7 reaction at low energies

J. J. He^*
, S. Z. Chen
, C. E. Rolfs
, S. W. Xu
, J. Hu
, X. W. Ma
, M. Wiescher
, R. J. deBoer
, T. Kajino
, M. Kusakabe
, L. Y. Zhang
, S. Q. Hou
, X. Q. Yu
, N. T. Zhang
, G. Lian
, Y. H. Zhang
, X. H. Zhou
, H. S. Xu
, G. Q. Xiao
, W. L. Zhan

^*Corresponding author for this work

CAS - Institute of Modern Physics
University of Chinese Academy of Sciences
Ruhr University Bochum
University of Notre Dame
National Astronomical Observatory of Japan
The University of Tokyo
China National Nuclear Corporation

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

The low-energy astrophysical S factors of the Li6(p,γ)Be7 reaction have been investigated on a 320 kV platform at the Institute of Modern Physics in Lanzhou. The experimental S factor of this reaction shows an interesting sizable drop contrary to any existing theoretical expectations at energies below 200 keV. Such drop has not been fully understood yet and may reflect a novel reaction mechanism. The appearance of an interesting new positive-parity 1/2⁺ or 3/2⁺ resonance at E_c.m.≈195keV is discussed. This study shows the danger of extrapolating experimental data over too large an energy range and demonstrates the need for careful direct experimental studies of reaction cross sections at or near stellar energies. In addition, our new results are discussed in the framework of a SUSY assisted Big-Bang Nucleosynthesis (BBN) model.

Original language	English
Pages (from-to)	287-291
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	725
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2013.07.044
State	Published - 1 Oct 2013
Externally published	Yes

Keywords

Big-bang nucleosynthesis
Direct capture
Radiative capture
S factors

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10.1016/j.physletb.2013.07.044

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He, J. J., Chen, S. Z., Rolfs, C. E., Xu, S. W., Hu, J., Ma, X. W., Wiescher, M., deBoer, R. J., Kajino, T., Kusakabe, M., Zhang, L. Y., Hou, S. Q., Yu, X. Q., Zhang, N. T., Lian, G., Zhang, Y. H., Zhou, X. H., Xu, H. S., Xiao, G. Q., & Zhan, W. L. (2013). A drop in the Li6(p,γ)Be7 reaction at low energies. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 725(4-5), 287-291. https://doi.org/10.1016/j.physletb.2013.07.044

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title = "A drop in the Li6(p,γ)Be7 reaction at low energies",

abstract = "The low-energy astrophysical S factors of the Li6(p,γ)Be7 reaction have been investigated on a 320 kV platform at the Institute of Modern Physics in Lanzhou. The experimental S factor of this reaction shows an interesting sizable drop contrary to any existing theoretical expectations at energies below 200 keV. Such drop has not been fully understood yet and may reflect a novel reaction mechanism. The appearance of an interesting new positive-parity 1/2+ or 3/2+ resonance at Ec.m.≈195keV is discussed. This study shows the danger of extrapolating experimental data over too large an energy range and demonstrates the need for careful direct experimental studies of reaction cross sections at or near stellar energies. In addition, our new results are discussed in the framework of a SUSY assisted Big-Bang Nucleosynthesis (BBN) model.",

keywords = "Big-bang nucleosynthesis, Direct capture, Radiative capture, S factors",

author = "He, \{J. J.\} and Chen, \{S. Z.\} and Rolfs, \{C. E.\} and Xu, \{S. W.\} and J. Hu and Ma, \{X. W.\} and M. Wiescher and deBoer, \{R. J.\} and T. Kajino and M. Kusakabe and Zhang, \{L. Y.\} and Hou, \{S. Q.\} and Yu, \{X. Q.\} and Zhang, \{N. T.\} and G. Lian and Zhang, \{Y. H.\} and Zhou, \{X. H.\} and Xu, \{H. S.\} and Xiao, \{G. Q.\} and Zhan, \{W. L.\}",

year = "2013",

month = oct,

day = "1",

doi = "10.1016/j.physletb.2013.07.044",

language = "英语",

volume = "725",

pages = "287--291",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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He, JJ, Chen, SZ, Rolfs, CE, Xu, SW, Hu, J, Ma, XW, Wiescher, M, deBoer, RJ, Kajino, T, Kusakabe, M, Zhang, LY, Hou, SQ, Yu, XQ, Zhang, NT, Lian, G, Zhang, YH, Zhou, XH, Xu, HS, Xiao, GQ & Zhan, WL 2013, 'A drop in the Li6(p,γ)Be7 reaction at low energies', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 725, no. 4-5, pp. 287-291. https://doi.org/10.1016/j.physletb.2013.07.044

TY - JOUR

T1 - A drop in the Li6(p,γ)Be7 reaction at low energies

AU - He, J. J.

AU - Chen, S. Z.

AU - Rolfs, C. E.

AU - Xu, S. W.

AU - Hu, J.

AU - Ma, X. W.

AU - Wiescher, M.

AU - deBoer, R. J.

AU - Kajino, T.

AU - Kusakabe, M.

AU - Zhang, L. Y.

AU - Hou, S. Q.

AU - Yu, X. Q.

AU - Zhang, N. T.

AU - Lian, G.

AU - Zhang, Y. H.

AU - Zhou, X. H.

AU - Xu, H. S.

AU - Xiao, G. Q.

AU - Zhan, W. L.

PY - 2013/10/1

Y1 - 2013/10/1

N2 - The low-energy astrophysical S factors of the Li6(p,γ)Be7 reaction have been investigated on a 320 kV platform at the Institute of Modern Physics in Lanzhou. The experimental S factor of this reaction shows an interesting sizable drop contrary to any existing theoretical expectations at energies below 200 keV. Such drop has not been fully understood yet and may reflect a novel reaction mechanism. The appearance of an interesting new positive-parity 1/2+ or 3/2+ resonance at Ec.m.≈195keV is discussed. This study shows the danger of extrapolating experimental data over too large an energy range and demonstrates the need for careful direct experimental studies of reaction cross sections at or near stellar energies. In addition, our new results are discussed in the framework of a SUSY assisted Big-Bang Nucleosynthesis (BBN) model.

AB - The low-energy astrophysical S factors of the Li6(p,γ)Be7 reaction have been investigated on a 320 kV platform at the Institute of Modern Physics in Lanzhou. The experimental S factor of this reaction shows an interesting sizable drop contrary to any existing theoretical expectations at energies below 200 keV. Such drop has not been fully understood yet and may reflect a novel reaction mechanism. The appearance of an interesting new positive-parity 1/2+ or 3/2+ resonance at Ec.m.≈195keV is discussed. This study shows the danger of extrapolating experimental data over too large an energy range and demonstrates the need for careful direct experimental studies of reaction cross sections at or near stellar energies. In addition, our new results are discussed in the framework of a SUSY assisted Big-Bang Nucleosynthesis (BBN) model.

KW - Big-bang nucleosynthesis

KW - Direct capture

KW - Radiative capture

KW - S factors

UR - https://www.scopus.com/pages/publications/84883052731

U2 - 10.1016/j.physletb.2013.07.044

DO - 10.1016/j.physletb.2013.07.044

M3 - 文章

AN - SCOPUS:84883052731

SN - 0370-2693

VL - 725

SP - 287

EP - 291

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4-5

ER -

A drop in the Li6(p,γ)Be7 reaction at low energies

Abstract

Keywords

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