Published July 1987 | Version v1
Report

Further results on narrow states related to anti-pp below threshold

  • 1. Tokyo Metropolitan Univ. (Japan). Dept. of Physics

Description

We have searched for narrow peaks in inclusive γ ray spectra obtained for each charge multiplicity separately. The 4σ upper limit for the yield of p-bar p → γ B with baryonia candidates B decaying into Nch prong states is 0.3 - 0.1 x 10-3 at Eγ = 80 - 938 MeV for each of Nch = 0 and ≥ 6, 0.8 - 0.1 x 10-3 for each of Nch = 2 and 4, and 1.2 - 0.2 x 10-3 for the sum over the charge multiplicity. At 2 to 3σ levels, however, we have observed nine narrow γ ray peaks with individual yields between 10-4 to 10-3 for various charge multiplicities. (author)

Additional details

Additional titles

Subtitle (English)
Search for narrow states with various decay topologies

Publishing Information

Imprint Title
Proceedings of the second international conference on hadron spectroscopy
Imprint Pagination
510 p.
Journal Page Range
p. 117-126.
Report number
KEK--87-7

Conference

Title
2. international conference on hadron spectroscopy.
Dates
16-18 Apr 1987.
Place
Oho, Ibaraki (Japan).