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A new measurement of the 1S0 neutron-neutron scattering length using the neutron-proton scattering length as a standard

Publication ,  Journal Article
Gonzalez Trotter, DE; Salinas, F; Chen, Q; Crowell, AS; Glöeckle, W; Howell, CR; Roper, CD; Schmidt, D; Šlaus, I; Tang, H; Tornow, W; Zhou, Z ...
Published in: Physical Review Letters
January 1, 1999

The present paper reports high-accuracy cross-section data for the 2H(n, nnp) reaction in the neutron-proton (np) and neutron-neutron (nn) final-state-interaction (FSI) regions at an incident mean neutron energy of 13.0 MeV. These data were analyzed with rigorous three-nucleon calculations to determine the 1S0 np and nn scattering lengths, a_np and a_nn. Our results are a_nn = -18.7 +/- 0.6 fm and a_np = − 23.5 +/− 0.8 fm. Since our value for a_np obtained from neutron-deuteron (nd) breakup agrees with that from free np scattering, we conclude that our investigation of the nn FSI done simultaneously and under identical conditions gives the correct value for a_nn. Our value for a_nn is in agreement with that obtained in pion-deuteron capture measurements but disagrees with values obtained from earlier nd breakup studies. © 1999 The American Physical Society.

Duke Scholars

Published In

Physical Review Letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 1, 1999

Volume

83

Issue

19

Start / End Page

3788 / 3791

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Gonzalez Trotter, D. E., Salinas, F., Chen, Q., Crowell, A. S., Glöeckle, W., Howell, C. R., … Zhou, Z. (1999). A new measurement of the 1S0 neutron-neutron scattering length using the neutron-proton scattering length as a standard. Physical Review Letters, 83(19), 3788–3791. https://doi.org/10.1103/PhysRevLett.83.3788
Gonzalez Trotter, D. E., F. Salinas, Q. Chen, A. S. Crowell, W. Glöeckle, C. R. Howell, C. D. Roper, et al. “A new measurement of the 1S0 neutron-neutron scattering length using the neutron-proton scattering length as a standard.” Physical Review Letters 83, no. 19 (January 1, 1999): 3788–91. https://doi.org/10.1103/PhysRevLett.83.3788.
Gonzalez Trotter DE, Salinas F, Chen Q, Crowell AS, Glöeckle W, Howell CR, et al. A new measurement of the 1S0 neutron-neutron scattering length using the neutron-proton scattering length as a standard. Physical Review Letters. 1999 Jan 1;83(19):3788–91.
Gonzalez Trotter, D. E., et al. “A new measurement of the 1S0 neutron-neutron scattering length using the neutron-proton scattering length as a standard.” Physical Review Letters, vol. 83, no. 19, Jan. 1999, pp. 3788–91. Scopus, doi:10.1103/PhysRevLett.83.3788.
Gonzalez Trotter DE, Salinas F, Chen Q, Crowell AS, Glöeckle W, Howell CR, Roper CD, Schmidt D, Šlaus I, Tang H, Tornow W, Walter RL, Witała H, Zhou Z. A new measurement of the 1S0 neutron-neutron scattering length using the neutron-proton scattering length as a standard. Physical Review Letters. 1999 Jan 1;83(19):3788–3791.

Published In

Physical Review Letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 1, 1999

Volume

83

Issue

19

Start / End Page

3788 / 3791

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences