Upper limits for bound states and resonance behavior in the trineutron system

Journal Article · Tue Jul 01 04:00:00 EDT 1980 · Nuclear Physics. A

DOI:https://doi.org/10.1016/0375-9474(80)90657-0· OSTI ID:1064031

Miller, J. P.; Bistirlich, J. A.; Crowe, K. M.; Rosenblum, S. S.; Rowe, P. C.; Shively, F. T.; Grilly, E. R.; Kerr, E. C.; Novak, J.; Sherman, R. H.; Brändle, H.; Strassner, G.; Truöl, P.

The trineutron mass spectrum was observed in the stopped pion radiative capture reaction {sup 3}H({pi}{sup -},{gamma})3n by measuring the photon energy with a high resolution spectrometer. The present experiment improves upon an earlier experiment by a factor of 27 in statistics and 2.2 in resolution. An improved upper limit (95% confidence level) on the branching ratio (bound state)/(total radiative capture rate) is found to be 4 X 10{sup -3}. No resonant structure is observed beyond that predicted by the pairwise interaction of the outgoing nucleons. The upper limit on the branching ratio to resonances with {Gamma} {<=} 5 MeV is 2 X 10{sup -2}. 1

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Computing Sciences Directorate; Physics Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1064031
• Report Number(s): LBL-10613
• Journal Information: Nuclear Physics. A, Journal Name: Nuclear Physics. A Journal Issue: C Vol. 343; ISSN 0375-9474
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS