Mass of the Σ+ Hyperon

W. F. Fry, J. Schneps, G. A. Snow, and M. S. Swami
Phys. Rev. 103, 226 – Published 1 July 1956
PDFExport Citation


Ten examples of the protonic decay from rest of the Σ+ hyperon have been analyzed. The ranges of the protons from the Σ+ decays were corrected for variations in the stopping power of each emulsion batch by determining the mean range of μ mesons from πμ decays. The mean range of the protons, after correcting for variations in stopping power, was found to be 1669.4±8.0 microns. The rms deviation of the proton ranges was found to be 38.5±8.0 microns. The Q of the Σ+ decay, Σ+p+π0 is 116.1±0.5 Mev, and the mass of the Σ+ hyperon is (2327.4±1.0)me.

  • Received 20 March 1956


©1956 American Physical Society

Authors & Affiliations

W. F. Fry, J. Schneps, G. A. Snow*, and M. S. Swami

  • Department of Physics, University of Wisconsin, Madison, Wisconsin

  • *Present address, Nucleonics Division, Naval Research Laboratory, Washington, D. C.

References (Subscription Required)

Click to Expand

Vol. 103, Iss. 1 — July 1956

Reuse & Permissions
Access Options

Authorization Required




Sign up to receive regular email alerts from Physical Review Journals Archive

Log In



Article Lookup

Paste a citation or DOI

Enter a citation