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NN scattering 3S1-3D1 mixing angle at next-to-next-to-leading order

Publication ,  Journal Article
Fleming, S; Mehen, T; Stewart, IW
Published in: Physical Review C - Nuclear Physics
2000

The 3S1-3D1 mixing angle for nucleon-nucleon scattering ∈1 is calculated to next-to-next-to-leading order in an effective field theory with perturbative pions. Without pions, the low energy theory fits the observed ∈1 well for momenta less than∼50 MeV. Including pions perturbatively significantly improves the agreement with data for momenta up to ∼150 MeV with one less parameter. Furthermore, for these momenta the accuracy of our calculation is similar to an effective field theory calculation in which the pion is treated nonperturbatively. This gives phenomenological support for a perturbative treatment of pions in low energy two-nucleon processes. We explain why it is necessary to perform spin and isospin traces in d dimensions when regulating divergences with dimensional regularization in higher partial wave amplitudes.

Duke Scholars

Published In

Physical Review C - Nuclear Physics

Publication Date

2000

Volume

61

Issue

4

Start / End Page

440051 / 440059

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Fleming, S., Mehen, T., & Stewart, I. W. (2000). NN scattering 3S1-3D1 mixing angle at next-to-next-to-leading order. Physical Review C - Nuclear Physics, 61(4), 440051–440059.
Fleming, S., T. Mehen, and I. W. Stewart. “NN scattering 3S1-3D1 mixing angle at next-to-next-to-leading order.” Physical Review C - Nuclear Physics 61, no. 4 (2000): 440051–59.
Fleming S, Mehen T, Stewart IW. NN scattering 3S1-3D1 mixing angle at next-to-next-to-leading order. Physical Review C - Nuclear Physics. 2000;61(4):440051–9.
Fleming, S., et al. “NN scattering 3S1-3D1 mixing angle at next-to-next-to-leading order.” Physical Review C - Nuclear Physics, vol. 61, no. 4, 2000, pp. 440051–59.
Fleming S, Mehen T, Stewart IW. NN scattering 3S1-3D1 mixing angle at next-to-next-to-leading order. Physical Review C - Nuclear Physics. 2000;61(4):440051–440059.

Published In

Physical Review C - Nuclear Physics

Publication Date

2000

Volume

61

Issue

4

Start / End Page

440051 / 440059

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics