Published 1975 | Version v1
Book

Some properties of the psi(3.7) resonance, and features of the total hadronic cross section in e+e- annihilation from 2.4GeV to 5.0GeV c.m. energy

Description

An analysis of data at the psi(3.7) resonance gives a partial width to electrons GAMMA(e)=2.2+-0.5keV, and limits on total width 200keV<GAMMA<800keV. The decay psi(3.7)→psi(3.1)π+π- is observed with a branching ratio 0.31+-0.04, and psi(3.7)→psi(3.1) + anything has a branching ratio of 0.54+-0.08. The psi resonances appear to have the same G-parity. An enhancement occurs in the total hadronic cross section at a c.m. energy of about 4.1GeV, rising to about 32nb from a level of 18nb adjacent to peak, which is about 300MeV wide. The integrated cross section for the peak is about 5.5nb-GeV, comparable to that for the psi(3.7) and psi(3.1) resonances

Additional details

Additional titles

Original title (no language)
La physique du neutrino a haute energie, Paris, 18-20 mars 1975.

Publishing Information

Publisher
Centre National de la Recherche Scientifique.
Imprint Place
Paris, France
ISBN
2222018145
Imprint Title
High energy neutrino physics, Paris, March 18-20, 1975
Imprint Pagination
p. 17-35.
Journal Issue
no. 245
Series
Colloques Internationaux du Centre National de la Recherche Scientifique.

Conference

Title
International colloquium on high energy neutrino physics.
Dates
18 Mar 1975.
Place
Paris, France.

Optional Information

Notes
Imprint:La physique du neutrino a haute energie, Paris, 18-20 mars 1975.