MEAN LIFE OF THE NEUTRAL PION

Journal Article · Fri Mar 01 04:00:00 EST 1963 · Phys. Letters

DOI:https://doi.org/10.1016/0031-9163(63)90584-5· OSTI ID:4729226

Von Dardel, G; Dekkers, D; Mermod, R; Van Putten, J D; Vivargent, M; Weber, G; Winter, K

High energy neutral mesons( rature of the d ) were produced in platinum foils of 3-60 micron thickness exposed to the 18-Bev internal proton beam of the CERN proton synchrotron, and the production of positrons relative to all heavier particles was measured in a secondary beam of 5-Bev/c. The momentum spectrum of rature of the d /sup o/, which is effective in producing 5Bev/c positrons, is obtained by weighting the rature of the d /sup o/ spectrum with the probability that a positron from a rature of the d /sup o/ has a momentum of 5-Bev/c. The momentum spectra of rature of the d /sup o/ and rature of the d /sup +/ are assumed to be of equal shape and the latter was measured. This effective rature of the d /sup o/ spectrum is narrow and is charactetized by an average momentum of 7.12-Bev/c and a rms momentum of 7.26-Bev/c. The mean life was determined to be (1.05 ction in DDT-C/ 0.18) x 10/sup -16/ sec. (C.E.S.)

• Research Organization: CERN, Geneva
• NSA Number: NSA-17-019122
• OSTI ID: 4729226
• Journal Information: Phys. Letters, Journal Name: Phys. Letters Vol. Vol: 4
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

FOILS
IRRADIATION
LIFETIME
MEASURED VALUES
MOMENTUM
PHYSICS
PIONS
PLATINUM
POSITRONS
PRODUCTION
PROTON BEAMS
SPECTRA
SYNCHROTRONS