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Measurement of the S01 neutron-neutron effective range in neutron-deuteron breakup

Publication ,  Journal Article
Malone, RC; Crowell, AS; Cumberbatch, LC; Fallin, BA; Friesen, FQL; Howell, CR; Malone, CR; Ticehurst, DR; Tornow, W; Markoff, DM; Crowe, BJ ...
Published in: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
December 10, 2022

We report the most precise determination of the S01 neutron-neutron effective range parameter (rnn) from neutron-neutron quasifree scattering in neutron-deuteron breakup. The experiment setup utilized a collimated beam of 15.5 MeV neutrons and an array of eight neutron detectors positioned at angles sensitive to several quasifree scattering kinematic configurations. The two neutrons emitted from the breakup reaction were detected in coincidence and time-of-flight techniques were used to determine their energies. The beam-target luminosity was measured in-situ with the yields from neutron-deuteron elastic scattering. Rigorous Faddeev-type calculations using the CD Bonn nucleon-nucleon potential were fit to our cross-section data to determine the value of rnn. The analysis was repeated using a semilocal momentum-space regularized N4LO+ chiral interaction potential. We obtained values of rnn=2.86±0.01(stat)±0.10(sys) fm and rnn=2.87±0.01(stat)±0.10(sys) fm using the CD Bonn and N4LO+ potentials, respectively. Our results are consistent with charge symmetry and previously reported values of rnn.

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Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

December 10, 2022

Volume

835

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics
 

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Malone, R. C., Crowell, A. S., Cumberbatch, L. C., Fallin, B. A., Friesen, F. Q. L., Howell, C. R., … Witała, H. (2022). Measurement of the S01 neutron-neutron effective range in neutron-deuteron breakup. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 835. https://doi.org/10.1016/j.physletb.2022.137557
Malone, R. C., A. S. Crowell, L. C. Cumberbatch, B. A. Fallin, F. Q. L. Friesen, C. R. Howell, C. R. Malone, et al. “Measurement of the S01 neutron-neutron effective range in neutron-deuteron breakup.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 835 (December 10, 2022). https://doi.org/10.1016/j.physletb.2022.137557.
Malone RC, Crowell AS, Cumberbatch LC, Fallin BA, Friesen FQL, Howell CR, et al. Measurement of the S01 neutron-neutron effective range in neutron-deuteron breakup. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2022 Dec 10;835.
Malone, R. C., et al. “Measurement of the S01 neutron-neutron effective range in neutron-deuteron breakup.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 835, Dec. 2022. Scopus, doi:10.1016/j.physletb.2022.137557.
Malone RC, Crowell AS, Cumberbatch LC, Fallin BA, Friesen FQL, Howell CR, Malone CR, Ticehurst DR, Tornow W, Markoff DM, Crowe BJ, Witała H. Measurement of the S01 neutron-neutron effective range in neutron-deuteron breakup. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2022 Dec 10;835.
Journal cover image

Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

December 10, 2022

Volume

835

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics