1. Search for a resonant enhancement of the7Be +dreaction and primordial7Li abundances
- Author
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J. A. Cizewski, Milan Matos, W. A. Peters, L. Lindhardt, Stephen A. Graves, Aderemi S. Adekola, S. Strauss, K. Y. Chae, I. Spassova, K. L. Jones, Michael Scott Smith, S. T. Pittman, Patrick O'Malley, Kyle Schmitt, M. E. Howard, Caroline D Nesaraja, J. F. Shriner, R. L. Kozub, S. Ahn, S. D. Pain, D. W. Bardayan, J. Wheeler, and B. M. Moazen
- Subjects
Nuclear physics ,Chemical kinetics ,Reaction rate ,Physics ,Nuclear and High Energy Physics ,Meson ,Big Bang nucleosynthesis ,Nucleosynthesis ,Resonance ,Atomic physics ,Anisotropy ,Beta decay - Abstract
Big Bang nucleosynthesis calculations, constrained by the Wilkinson Microwave Anisotropy Probe results, produce {sup 7}Li abundances almost a factor of four larger than those extrapolated from observations. Since primordial {sup 7}Li is believed to be mostly produced by the beta decay of {sup 7}Be, one proposed solution to this discrepancy is a resonant enhancement of the {sup 7}Be(d,p)2{alpha} reaction rate through the 5/2{sup +} 16.7-MeV state in {sup 9}B. The {sup 2}H({sup 7}Be,d){sup 7}Be reaction was used to search for such a resonance; none was observed. An upper limit on the width of the proposed resonance was deduced.
- Published
- 2011
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