Parameter-Free Calculation of the Solar Proton Fusion Rate in Effective Field Theory

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Spurred by the recent complete determination of the weak currents in two-nucleon systems up to O(Q{sup 3}) in heavy-baryon chiral perturbation theory, we carry out a parameter-free calculation of the solar proton fusion rate in an effective field theory that combines the merits of the standard nuclear physics method and systematic chiral expansion. Using the tritium {beta}-decay rate as an input to fix the only unknown parameter in the effective Lagrangian, we can evaluate with drastically improved precision the ratio of the two-body contribution to the well established one-body contribution; the ratio is determined to be (0.9 {+-} 0.1)%. This ... continued below

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127 Kilobytes pages

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Park, T.-S.; Marcucci, L.E.; Schiavilla, R.; Viviani, M.; Kievsky, A.; Rosati, S. et al. June 1, 2001.

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Spurred by the recent complete determination of the weak currents in two-nucleon systems up to O(Q{sup 3}) in heavy-baryon chiral perturbation theory, we carry out a parameter-free calculation of the solar proton fusion rate in an effective field theory that combines the merits of the standard nuclear physics method and systematic chiral expansion. Using the tritium {beta}-decay rate as an input to fix the only unknown parameter in the effective Lagrangian, we can evaluate with drastically improved precision the ratio of the two-body contribution to the well established one-body contribution; the ratio is determined to be (0.9 {+-} 0.1)%. This result is essentially independent of the cutoff parameter for a wide range of its variation (500 MeV {le} {Lambda} {+-} 800 MeV), a feature that substantiates the consistency of the calculation.

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127 Kilobytes pages

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  • Report No.: JLAB-THY-01-18
  • Report No.: DOE/ER/40150-1856
  • Report No.: nucl-th/0106025
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 782606
  • Archival Resource Key: ark:/67531/metadc716248

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 5, 2016, 9:49 p.m.

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Park, T.-S.; Marcucci, L.E.; Schiavilla, R.; Viviani, M.; Kievsky, A.; Rosati, S. et al. Parameter-Free Calculation of the Solar Proton Fusion Rate in Effective Field Theory, article, June 1, 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc716248/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.