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Title: Universal behavior of p -wave proton-proton fusion near threshold

Abstract

We calculate the p -wave contribution to the proton-proton fusion S factor and its energy derivative in pionless effective-field theory (EFT) up to next-to-leading order. The leading contributions are given by a recoil piece from the Gamow-Teller and Fermi operators and from relativistic 1/ m suppressed weak interaction operators. We obtain the value of (2.5 ± 0.3) × 10–28 MeV fm2 for the S factor and (2.2 ± 0.2) × 10–26 fm2 for its energy derivative at threshold. Furthermore, these are smaller than the results of a prior study that employed chiral EFT by several orders of magnitude. We conclude that, contrary to what has been previously reported, the p -wave contribution does not need to be considered in a high-precision determination of the S factor at astrophysical energies. Combined with the chiral EFT calculation of Acharya et al. [Phys. Lett. B 760, 584 (2016)] for the s -wave channel, this gives a total threshold S factor of S (0) = (4.047$$^{+0.024}_{–0.032}$$) × 10–23 MeV fm2.

Authors:
 [1];  [2];  [3]
  1. Johannes Gutenberg Univ. Mainz, Mainz (Germany); Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Mississippi State Univ., Mississippi State, MS (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1564103
Alternate Identifier(s):
OSTI ID: 1558159
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 100; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Acharya, Bijaya, Platter, Lucas J., and Rupak, Gautam. Universal behavior of p-wave proton-proton fusion near threshold. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.021001.
Acharya, Bijaya, Platter, Lucas J., & Rupak, Gautam. Universal behavior of p-wave proton-proton fusion near threshold. United States. https://doi.org/10.1103/PhysRevC.100.021001
Acharya, Bijaya, Platter, Lucas J., and Rupak, Gautam. Mon . "Universal behavior of p-wave proton-proton fusion near threshold". United States. https://doi.org/10.1103/PhysRevC.100.021001. https://www.osti.gov/servlets/purl/1564103.
@article{osti_1564103,
title = {Universal behavior of p-wave proton-proton fusion near threshold},
author = {Acharya, Bijaya and Platter, Lucas J. and Rupak, Gautam},
abstractNote = {We calculate the p-wave contribution to the proton-proton fusion S factor and its energy derivative in pionless effective-field theory (EFT) up to next-to-leading order. The leading contributions are given by a recoil piece from the Gamow-Teller and Fermi operators and from relativistic 1/m suppressed weak interaction operators. We obtain the value of (2.5 ± 0.3) × 10–28 MeV fm2 for the S factor and (2.2 ± 0.2) × 10–26 fm2 for its energy derivative at threshold. Furthermore, these are smaller than the results of a prior study that employed chiral EFT by several orders of magnitude. We conclude that, contrary to what has been previously reported, the p-wave contribution does not need to be considered in a high-precision determination of the S factor at astrophysical energies. Combined with the chiral EFT calculation of Acharya et al. [Phys. Lett. B 760, 584 (2016)] for the s-wave channel, this gives a total threshold S factor of S(0) = (4.047$^{+0.024}_{–0.032}$) × 10–23 MeV fm2.},
doi = {10.1103/PhysRevC.100.021001},
journal = {Physical Review C},
number = 2,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

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Cited by: 4 works
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Works referencing / citing this record:

Complex-energy analysis of proton-proton fusion
journal, September 2019


Complex-energy analysis of proton-proton fusion
text, January 2019