Abstract:We study the nonresonant part of the 7 Be(p, γ) 8 B reaction using a threecluster resonating group model that is variationally converged and virtually complete in the 4 He+ 3 He+p model space. The importance of using adequate nucleon-nucleon interaction is demonstrated. We find that the low-energy astrophysical S-factor is linearly correlated with the quadrupole moment of 7 Be. A range of parameters is found where the most important 7 Be and 7 Li properties are reproduced simultaneously; the corresponding S-fa… Show more
“…[9] we demonstrated that there is a linear correlation between the zero-energy astrophysical S factor, S 17 (0), of the 7 Be(p, γ) 8 B reaction and the quadrupole moment of 7 Be, Q 7 . The Q 7 quadrupole moment has not been measured yet, but in Ref.…”
Section: The Size Of 8 B and Its Effect On S 17mentioning
confidence: 94%
“…The absolute scale of the S 17 (0) − Q 7 correlation, however, depends on the applied effective nucleon-nucleon (N − N) interaction. For our preferred MN interaction this resulted in S 17 (0) = 25 − 26.5 eV b [9]. Other interactions gave slightly larger or smaller S 17 (0) values, but these interactions were found to be inferior to the MN force for other observables.…”
Section: The Size Of 8 B and Its Effect On S 17mentioning
confidence: 95%
“…The Q 7 quadrupole moment has not been measured yet, but in Ref. [9] we have predicted it to be between −6 e fm 2 and −7 e fm 2 . The absolute scale of the S 17 (0) − Q 7 correlation, however, depends on the applied effective nucleon-nucleon (N − N) interaction.…”
Section: The Size Of 8 B and Its Effect On S 17mentioning
confidence: 99%
“…In Ref. [9] we have shown that the zero-energy cross section of the 7 Be(p, γ) 8 B reaction scales linearly with the, unfortunately yet unknown, quadrupole moment of 7 Be. In the present paper we extend this study and investigate the relation between the zero-energy cross section and several 8 B "size" properties.…”
Section: Motivationmentioning
confidence: 99%
“…As this model has been discussed before we refer the reader to Refs. [10,9] for details of the theoretical background. As customary in nuclear astrophysics we define the cross sections in terms of the astrophysical S factor…”
“…[9] we demonstrated that there is a linear correlation between the zero-energy astrophysical S factor, S 17 (0), of the 7 Be(p, γ) 8 B reaction and the quadrupole moment of 7 Be, Q 7 . The Q 7 quadrupole moment has not been measured yet, but in Ref.…”
Section: The Size Of 8 B and Its Effect On S 17mentioning
confidence: 94%
“…The absolute scale of the S 17 (0) − Q 7 correlation, however, depends on the applied effective nucleon-nucleon (N − N) interaction. For our preferred MN interaction this resulted in S 17 (0) = 25 − 26.5 eV b [9]. Other interactions gave slightly larger or smaller S 17 (0) values, but these interactions were found to be inferior to the MN force for other observables.…”
Section: The Size Of 8 B and Its Effect On S 17mentioning
confidence: 95%
“…The Q 7 quadrupole moment has not been measured yet, but in Ref. [9] we have predicted it to be between −6 e fm 2 and −7 e fm 2 . The absolute scale of the S 17 (0) − Q 7 correlation, however, depends on the applied effective nucleon-nucleon (N − N) interaction.…”
Section: The Size Of 8 B and Its Effect On S 17mentioning
confidence: 99%
“…In Ref. [9] we have shown that the zero-energy cross section of the 7 Be(p, γ) 8 B reaction scales linearly with the, unfortunately yet unknown, quadrupole moment of 7 Be. In the present paper we extend this study and investigate the relation between the zero-energy cross section and several 8 B "size" properties.…”
Section: Motivationmentioning
confidence: 99%
“…As this model has been discussed before we refer the reader to Refs. [10,9] for details of the theoretical background. As customary in nuclear astrophysics we define the cross sections in terms of the astrophysical S factor…”
The importance of the 7 Be(p, γ) 8 B reaction in predicting the highenergy solar neutrino flux is discussed. I present a microscopic eight-body model and a potential model for the calculation of the 7 Be(p, γ) 8 B cross section.
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