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Reinvestigation of Quark Masses Variations on Big Bang Nucleosynthesis
- Issue Date
- Mar-2013
- Publisher
- SPRINGER WIEN
- Citation
- FEW-BODY SYSTEMS, v.54, no.1-4, pp.495 - 499
- Journal Title
- FEW-BODY SYSTEMS
- Volume
- 54
- Number
- 1-4
- Start Page
- 495
- End Page
- 499
- ISSN
- 0177-7963
- Abstract
- We report the constraints from primordial nucleosynthesis on a possible time-dependent quark mass. The variation may affect binding energies and Q values as well as resonance properties of light elements through the hadron mass variation in the nucleon-nucleon interaction. Updated light-element abundances and uncertainties along with a new detailed analysis of the resonance properties on the crucial He-3(d, p)He-4 reaction imply a narrower range on the possible quark-mass variations in the early universe. The optimum concordance region reduces to a value consistent with no variation.
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Related Researcher
- Cheoun, Myung-Ki
- College of Natural Sciences (Department of Physics)