Constraining the ${}^7$Be($p,\gamma$)${}^8$B $S$-factor with the new precise ${}^7$Be solar neutrino flux from Borexino

Abstract

Among the solar fusion reactions, the rate of the ${}^7$Be($p,\gamma$)${}^8$B reaction is one of the most difficult to determine rates. In a number of previous experiments, its astrophysical $S$-factor has been measured at $E$ = 0.1-2.5 MeV center-of-mass energy. However, no experimental data is available below 0.1 MeV. Thus, an extrapolation to solar energies is necessary, resulting in significant uncertainty for the extrapolated $S$-factor. On the other hand, the measured solar neutrino fluxes are now very precise. Therefore, the problem of the $S$-factor determination is turned around here: Using the measured ${}^7$Be and ${}^8$B neutrino fluxes and the Standard Solar Model, the ${}^7$Be($p,\gamma$)${}^8$B astrophysical $S$-factor is determined at the solar Gamow peak. In addition, the ${}^3$He($\alpha$,$\gamma$)${}^7$Be $S$-factor is redetermined with a similar method.

arXiv commentSubmitted to Nucl. Phys. A

References in corpus (27)

• The chemical composition of the Sun
• Evidence for oscillation of atmospheric neutrinos
• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Solar fusion cross sections II: the pp chain and CNO cycles
• Combined Analysis of all Three Phases of Solar Neutrino Data from the Sudbury Neutrino Observatory
• A new Generation of Standard Solar Models
• 10,000 Standard Solar Models: a Monte Carlo Simulation
• Simultaneous Precision Spectroscopy of $pp$, ${}^7$Be, and $pep$ Solar Neutrinos with Borexino Phase-II
• Activation measurement of the 3He(alpha,gamma)7Be cross section at low energy
• Astrophysical S-factor of the 3He(alpha,gamma)7Be reaction measured at low energy via prompt and delayed gamma detection
• Microscopic calculation of the 3He(alpha,gamma)7Be and 3H(alpha,gamma)7Li capture cross sections using realistic interactions
• A New Precision Measurement of the 3He(4He,gamma)7Be Cross section
• Precise measurement of the ^7Be(p,gamma)^8B S-factor
• CN-Cycle Solar Neutrinos and Sun's Primordial Core Metalicity
• New measurement and analysis of the 7Be(p,gamma)8B cross section
• 7Be(p,gamma)8B astrophysical S-factor from precision cross section measurements
• The 3He + 4He --> 7Be Astrophysical S-factor
• A New Precision Measurement of the 7Be(p,gamma)8B Cross section with an Implanted 7Be Target
• Low energy measurement of the 7Be(p,gamma)8B cross section
• The Temperature Dependence of Solar Neutrino Fluxes
• Activation measurement of the 3He(a,g)7Be reaction cross section at high energies
• Bayesian Estimation of Thermonuclear Reaction Rates
• A New Measurement of the Proton Capture Rate on 7Be and the S17(0) Factor
• Using the Standard Solar Model to Constrain Composition and S-Factors
• Halo effective field theory constrains the solar Beryllium-7 + proton -> Boron-8 + photon rate
• Constraining Big Bang lithium production with recent solar neutrino data

Cited by in corpus (6)

• ${}^7$Be and ${}^7$Li nuclei within the no-core shell model with continuum
• Thermonuclear reaction rates and primordial nucleosynthesis
• Analysis of the ${}^3\mathrm{He}(\alpha ,\gamma {)}^7\mathrm{Be}$ and ${}^3\mathrm{H}(\alpha ,\gamma {)}^7\mathrm{Li}$ astrophysical direct capture reactions in a modified potential-model approach
• New Results for the p7Be-->8Bgamma Astrophysical S-factor from 10 keV to 5 MeV and Reactions Rate from 0.01 to 10 T9
• Astrophysical S factor and rate of ${}^7\mathrm{Be}(p,\gamma {)}^8\mathrm{B}$ direct capture reaction in a potential model
• Coupled-channels treatment of ${}^7\mathrm{Be}(p,\gamma {)}^8\mathrm{B}$ in effective field theory