Published March 7, 1988 | Version v1
Journal article

Evidence against broad dibaryons

  • 1. Queen Mary Coll., London (UK)

Description

Spin-correlation parameters A/sub L//sub L/, A/sub S//sub L/, A/sub N//sub L/, A/sub N/0, A/sub S/0, A/sub L/0, and A0/sub L/ have been measured for the reaction pp→npπ+ at 492, 576, 643, 729, and 796 MeV. An isobar analysis determines magnitudes and phases of partial waves up to NN 3F3. For the amplitude NN(1D2)→NΔ(5S2), the phase shows a strong threshold enhancement in the NΔ channel, dropping from 44.40 +- 4.40 at 492 MeV to 11.90 +- 1.90 at 796 MeV. Other phases show little activity. Broad dibaryons are conclusively ruled out in 1D2, 3F3, and 3P2 in this energy range

Additional details

Publishing Information

Journal Title
Phys. Rev. Lett.
Journal Volume
60
Journal Issue
10
Series
Phys. Rev. Lett.
Journal Page Range
901-904
ISSN
0031-9007
CODEN
PRLTA