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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
Published version (DOI)

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

Alex Crowell
Author Alex Crowell  
Calvin R. Howell
Author Calvin R. Howell Physics
Werner Tornow
Author Werner Tornow Physics

Published In

Physical Review Letters

DOI

10.1103/PhysRevLett.83.3788

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

10.1103/PhysRevLett.83.3788

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