corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 6
< Previous Article | Next Article >

Phys. Rev. Lett. 85, 1190–1193 (2000)

New Attempt to Determine the n-n Scattering Length with the 2H(n,np)n Reaction

Download: PDF (123 kB) Buy this article Export: BibTeX or EndNote (RIS)

V. Huhn, L. Wätzold, Ch. Weber, A. Siepe, W. von Witsch, H. Witała*, and W. Glöckle†
Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany

Received 3 April 2000; published in the issue dated 7 August 2000

The n-n final-state interaction (FSI) was investigated via the 2H(n,np)n reaction at 25 MeV, using a geometry which enables the simultaneous observation of n-p quasifree (QFS) scattering. The data were analyzed with Monte Carlo simulations based on rigorous Faddeev calculations with realistic nucleon-nucleon potentials. The value of ann deduced from the absolute yield in the FSI peak is -16.27±0.40 fm while the relative data, normalized in the QFS region, give -16.06±0.35 fm. Thus our results differ from the “recommended” value of ann = -18.5±0.3 fm by more than 5 standard deviations.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.1190
DOI:
10.1103/PhysRevLett.85.1190
PACS:
21.45.+v, 13.75.Cs, 24.10.-i, 25.10.+s

*Permanent address: Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Cracow, Poland.

†Permanent address: Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany.

 
< Previous Article | Next Article >