Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances

P. D. O'Malley; D. W. Bardayan; A. S. Adekola; S. Ahn; K. Y. Chae; J. A. Cizewski; S. Graves; M. E. Howard; K. L. Jones; R. L. Kozub; L. Lindhardt; M. Matos; B. M. Moazen; C. D. Nesaraja; S. D. Pain; W. A. Peters; S. T. Pittman; K. T. Schmitt; J. F. Shriner; M. S. Smith; I. Spassova; S. Y. Strauss; J. L. Wheeler

doi:10.1103/PhysRevC.84.042801

Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances

P. D. O'Malley, D. W. Bardayan, A. S. Adekola, S. Ahn, K. Y. Chae, J. A. Cizewski, S. Graves, M. E. Howard, K. L. Jones, R. L. Kozub, L. Lindhardt, M. Matos, B. M. Moazen, C. D. Nesaraja, S. D. Pain, W. A. Peters, S. T. Pittman, K. T. Schmitt, J. F. Shriner, M. S. SmithI. Spassova, S. Y. Strauss, J. L. Wheeler

Department of Physics

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41 Scopus citations

Abstract

Big Bang nucleosynthesis calculations, constrained by the Wilkinson Microwave Anisotropy Probe results, produce 7Li abundances almost a factor of four larger than those extrapolated from observations. Since primordial 7Li is believed to be mostly produced by the beta decay of 7Be, one proposed solution to this discrepancy is a resonant enhancement of the 7Be(d,p)2α reaction rate through the 5/2⁺ 16.7-MeV state in 9B. The 2H(7Be,d)7Be reaction was used to search for such a resonance; none was observed. An upper limit on the width of the proposed resonance was deduced.

Original language	English
Article number	042801
Journal	Physical Review C - Nuclear Physics
Volume	84
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.84.042801
State	Published - 17 Oct 2011

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O'Malley, P. D., Bardayan, D. W., Adekola, A. S., Ahn, S., Chae, K. Y., Cizewski, J. A., Graves, S., Howard, M. E., Jones, K. L., Kozub, R. L., Lindhardt, L., Matos, M., Moazen, B. M., Nesaraja, C. D., Pain, S. D., Peters, W. A., Pittman, S. T., Schmitt, K. T., Shriner, J. F., ... Wheeler, J. L. (2011). Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances. Physical Review C - Nuclear Physics, 84(4), Article 042801. https://doi.org/10.1103/PhysRevC.84.042801

@article{b725d5f96d3846f6b889cfff8936d1c5,

title = "Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances",

abstract = "Big Bang nucleosynthesis calculations, constrained by the Wilkinson Microwave Anisotropy Probe results, produce 7Li abundances almost a factor of four larger than those extrapolated from observations. Since primordial 7Li is believed to be mostly produced by the beta decay of 7Be, one proposed solution to this discrepancy is a resonant enhancement of the 7Be(d,p)2α reaction rate through the 5/2+ 16.7-MeV state in 9B. The 2H(7Be,d)7Be reaction was used to search for such a resonance; none was observed. An upper limit on the width of the proposed resonance was deduced.",

author = "O'Malley, \{P. D.\} and Bardayan, \{D. W.\} and Adekola, \{A. S.\} and S. Ahn and Chae, \{K. Y.\} and Cizewski, \{J. A.\} and S. Graves and Howard, \{M. E.\} and Jones, \{K. L.\} and Kozub, \{R. L.\} and L. Lindhardt and M. Matos and Moazen, \{B. M.\} and Nesaraja, \{C. D.\} and Pain, \{S. D.\} and Peters, \{W. A.\} and Pittman, \{S. T.\} and Schmitt, \{K. T.\} and Shriner, \{J. F.\} and Smith, \{M. S.\} and I. Spassova and Strauss, \{S. Y.\} and Wheeler, \{J. L.\}",

year = "2011",

month = oct,

day = "17",

doi = "10.1103/PhysRevC.84.042801",

language = "English",

volume = "84",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "4",

}

O'Malley, PD, Bardayan, DW, Adekola, AS, Ahn, S, Chae, KY, Cizewski, JA, Graves, S, Howard, ME, Jones, KL, Kozub, RL, Lindhardt, L, Matos, M, Moazen, BM, Nesaraja, CD, Pain, SD, Peters, WA, Pittman, ST, Schmitt, KT, Shriner, JF, Smith, MS, Spassova, I, Strauss, SY & Wheeler, JL 2011, 'Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances', Physical Review C - Nuclear Physics, vol. 84, no. 4, 042801. https://doi.org/10.1103/PhysRevC.84.042801

TY - JOUR

T1 - Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances

AU - O'Malley, P. D.

AU - Bardayan, D. W.

AU - Adekola, A. S.

AU - Ahn, S.

AU - Chae, K. Y.

AU - Cizewski, J. A.

AU - Graves, S.

AU - Howard, M. E.

AU - Jones, K. L.

AU - Kozub, R. L.

AU - Lindhardt, L.

AU - Matos, M.

AU - Moazen, B. M.

AU - Nesaraja, C. D.

AU - Pain, S. D.

AU - Peters, W. A.

AU - Pittman, S. T.

AU - Schmitt, K. T.

AU - Shriner, J. F.

AU - Smith, M. S.

AU - Spassova, I.

AU - Strauss, S. Y.

AU - Wheeler, J. L.

PY - 2011/10/17

Y1 - 2011/10/17

N2 - Big Bang nucleosynthesis calculations, constrained by the Wilkinson Microwave Anisotropy Probe results, produce 7Li abundances almost a factor of four larger than those extrapolated from observations. Since primordial 7Li is believed to be mostly produced by the beta decay of 7Be, one proposed solution to this discrepancy is a resonant enhancement of the 7Be(d,p)2α reaction rate through the 5/2+ 16.7-MeV state in 9B. The 2H(7Be,d)7Be reaction was used to search for such a resonance; none was observed. An upper limit on the width of the proposed resonance was deduced.

AB - Big Bang nucleosynthesis calculations, constrained by the Wilkinson Microwave Anisotropy Probe results, produce 7Li abundances almost a factor of four larger than those extrapolated from observations. Since primordial 7Li is believed to be mostly produced by the beta decay of 7Be, one proposed solution to this discrepancy is a resonant enhancement of the 7Be(d,p)2α reaction rate through the 5/2+ 16.7-MeV state in 9B. The 2H(7Be,d)7Be reaction was used to search for such a resonance; none was observed. An upper limit on the width of the proposed resonance was deduced.

UR - https://www.scopus.com/pages/publications/80055039447

U2 - 10.1103/PhysRevC.84.042801

DO - 10.1103/PhysRevC.84.042801

M3 - Article

AN - SCOPUS:80055039447

SN - 0556-2813

VL - 84

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 042801

ER -

Search for a resonant enhancement of the 7Be + d reaction and primordial 7Li abundances

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