Big-bang nucleosynthesis with high-energy photon injection

Thesis/Dissertation · Sat May 01 00:00:00 EDT 1999

DOI:https://doi.org/10.2172/753050· OSTI ID:753050

Holtmann, Erich Nielsen ^[1]

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1. Univ. of California, Berkeley, CA (United States)

The author discusses the photodissociation of light elements due to the radiative decay of a massive particle, and he has shown how to constrain the model parameters from the observed light-element abundances. He adopted two quasar absorption system (QAS) D/H values, as well as solar system data for D/H and ³He/H. For each of these, he used two ⁴He values. He presents his results in terms of the confidence level at which each theoretical parameter set (i.e., the set of properties of a radiatively decaying particle) is excluded by the observed abundances. His algorithm for computing the confidence level is consistent and general enough to apply not only to the scenarios investigated in this work, but also to many other non-standard theories of BBN.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 753050
• Report Number(s): LBNL-43276; UCB-PTH-99/22; R&D Project: 417083
• Resource Relation: Other Information: TH: Thesis (Ph.D.); Submitted to Univ. of California, Berkeley, CA (US); PBD: 1 May 1999
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGICAL MODELS
NUCLEOSYNTHESIS
HYDROGEN
DEUTERIUM
HELIUM 3
RADIATIVE DECAY
ELEMENT ABUNDANCE