Pair decay width of the Hoyle state and carbon production in stars

Abstract

Electron scattering off the first excited 0+ state in 12C (the Hoyle state) has been performed at low momentum transfers at the S-DALINAC. The new data together with a novel model-independent analysis of the world data set covering a wide momentum transfer range result in a highly improved transition charge density from which a pair decay width Gamma_pi = (62.3 +- 2.0) micro-eV of the Hoyle state was extracted reducing the uncertainty of the literature values by more than a factor of three. A precise knowledge of Gamma_pi is mandatory for quantitative studies of some key issues in the modeling of supernovae and of asymptotic giant branch stars, the most likely site of the slow-neutron nucleosynthesis process.

arXiv comment4 pages, 4 figures, accepted for publication in Phys. Rev. Lett

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Cited by in corpus (38)

• Quantum Monte Carlo methods for nuclear physics
• Microscopic Clustering in Light Nuclei
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• Nonlocalized cluster dynamics and nuclear molecular structure
• Emergent geometry and duality in the carbon nucleus
• Properties of Carbon-Oxygen White Dwarfs From Monte Carlo Stellar Models
• Alpha cluster structures and monopole excitations in ${}^{13}$C
• Resonance parameters of the first 1/2+ state in 9Be and astrophysical implications
• The radiative width of the Hoyle state from $\gamma$-ray spectroscopy
• Nonlocalized Clustering and Evolution of Cluster Structure in Nuclei
• The Impact of Helium-Burning Reaction Rates on Massive Star Evolution and Nucleosynthesis
• Isoscalar monopole and dipole excitations of cluster states and giant resonances in ${}^{12}$C
• Cluster structures in ${}^{12}$C from global energy density functionals
• Role of chiral two-body currents in ${}^6$Li magnetic properties in light of a new precision measurement with the relative self-absorption technique
• Consistent description of 12C and 16O using finite range three-body interaction
• Editorial note to "Large number coincidences and the anthropic principle in cosmology"
• Improved version of simplified method for including tensor effect in cluster models
• A Microscopic Cluster Description of 12C
• Clusters and halos in light nuclei
• Explicit inclusion of spin-orbit contribution in THSR wave function
• Precision measurement of the $E2$ transition strength to the 2${}_1^{+}$ state of ${}^{12}$C
• Consistent description for cluster dynamics and single-particle correlation
• The Hoyle state and its relatives
• Tensor correlations in ${}^4$He and ${}^8$Be with antisymmetrized quasi cluster model
• The Hoyle state in Nuclear Lattice EFT
• Consistent alpha-cluster description of the 12C (0^+_2) resonance
• Contribution of Nuclear Excitation Electromagnetic Form Factors in ${}^{12}\mathrm{C}$ and ${}^{16}\mathrm{O}$ to the Coulomb Sum Rule
• Monopole transition strength function of ${}^{12}$C in three-$\alpha$ model
• Shape of 12C
• $\alpha$ and triton clustering in ${}^{35}$Cl
• Two-neutron correlations in microscopic wave functions of He-6, He-8 and C-12
• Low-energy ${}^{12}$C continuum states in three-$\alpha$ model
• Clusters, Halos, And S-Factors In Fermionic Molecular Dynamics
• New data acquisition system of the Lintott magnetic spectrometer at the S-DALINAC
• Non-forward radiative corrections to electron-carbon scattering
• Examination of the $\alpha$-cluster breaking in the four $0^{+}$ bands of ${}^{12}$C with the variation of multiple bases of the antisymmetrized molecular dynamics