Revised Big Bang Nucleosynthesis with long-lived negatively charged massive particles: updated recombination rates, primordial 9Be nucleosynthesis, and impact of new 6Li limits

Abstract

We extensively reanalyze effects of a long-lived negatively charged massive particle, X-, on big bang nucleosynthesis (BBN). The BBN model with an X- particle was originally motivated by the discrepancy between 6,7Li abundances predicted in standard BBN model and those inferred from observations of metal-poor stars. In this model 7Be is destroyed via the recombination with an X- particle followed by radiative proton capture. We calculate precise rates for the radiative recombinations of 7Be, 7Li, 9Be, and 4He with X-. In nonresonant rates we take into account respective partial waves of scattering states and respective bound states. The finite sizes of nuclear charge distributions cause deviations in wave functions from those of point-charge nuclei. For a heavy X- mass, m_X \gtrsim 100 GeV, the d-wave --> 2P transition is most important for 7Li and 7,9Be, unlike recombination with electrons. Our new nonresonant rate of the 7Be recombination for m_X=1000 GeV is more than 6 times larger than the existing rate. Moreover, we suggest a new important reaction for 9Be production: the recombination of 7Li and X- followed by deuteron capture. We derive binding energies of X-nuclei along with reaction rates and Q-values. We then calculate BBN and find that the amount of 7Be destruction depends significantly on the charge distribution of 7Be. Finally, updated constraints on the initial abundance and the lifetime of the X- are derived in the context of revised upper limits to the primordial 6Li abundance. Parameter regions for the solution to the 7Li problem are revised, and the primordial 9Be abundances is revised.

41 pages, 34 figures, 15 tables, errors fixed, abstract cut down, Figs. 22-33 and Table 1 & 15 revised, Secs. 9.1 & 9.6 and Fig. 34 added, conclusion unchanged, accepted for publication in ApJ

References in corpus (25)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Big-Bang Nucleosynthesis and Gravitino
• Particle physics catalysis of thermal Big Bang Nucleosynthesis
• First stars VII. Lithium in extremely metal poor dwarfs
• Atomic Diffusion and Mixing in Old Stars I. VLT/FLAMES-UVES Observations of Stars in NGC 6397
• Big Bang Nucleosynthesis as a Probe of New Physics
• Bound-State Effects on Light-Element Abundances in Gravitino Dark Matter Scenarios
• Line shift, line asymmetry, and the 6Li/7Li isotopic ratio determination
• Big Bang Nucleosynthesis with Long Lived Charged Massive Particles
• Strong Interactive Massive Particles from a Strong Coupled Theory
• Stau-catalyzed ${}^6$Li Production in Big-Bang Nucleosynthesis
• Bounds on long-lived charged massive particles from Big Bang nucleosynthesis
• The cosmic 6Li and 7Li problems and BBN with long-lived charged massive particles
• Big-Bang Nucleosynthesis with Long-Lived Charged Slepton
• Primordial Lithium Abundance in Catalyzed Big Bang Nucleosynthesis
• Possible solution to the ${}^7$Li problem by the long lived stau
• Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter
• A Simultaneous Solution to the ^6Li and ^7Li Big Bang Nucleosynthesis Problems from a Long-Lived Negatively-Charged Leptonic Particle
• Gravitino Dark Matter and the Cosmic Lithium Abundances
• Big-bang nucleosynthesis and the relic abundance of dark matter in a stau-neutralino coannihilation scenario
• Beryllium abundances in metal-poor stars
• 6Li/7Li estimates for metal-poor stars
• Effect of Long-lived Strongly Interacting Relic Particles on Big Bang Nucleosynthesis
• Bridging the primordial A=8 divide with Catalyzed Big Bang Nucleosynthesis
• CBBN in the CMSSM

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• Introduction to Big Bang Nucleosynthesis and Modern Cosmology
• Supernova Neutrino Process of Li and B Revisited
• Review on Effects of Long-lived Negatively Charged Massive Particles on Big Bang Nucleosynthesis
• Inhomogeneity in the early Galactic chemical enrichment exposed by beryllium abundances in extremely metal-poor stars
• Progress in Nuclear Astrophysics of East and Southeast Asia
• Detecting weak beryllium lines with CUBES