SEARCH FOR TIME-LIKE STRUCTURE OF THE PROTON

Journal Article · Mon Jul 01 04:00:00 EDT 1963 · Phys. Letters

DOI:https://doi.org/10.1016/S0375-9601(63)96375-8· OSTI ID:4699540

Conversi, M; Massam, T; Muller, Th; Zichichi, A

An attempt was made to observe the process p + p yields e/sup -/ + e/ sup +/, the rate of which depends on the unknown time-like form factors. The equipment and procedure followed in the experiment with a 2.5 Bev/c p beam is described. The cross section at this energy for a point-like proton is estimated to be about 0.25 mu b. No events, however, were observed; and only an upper limit of 2 x 10/sup -32/ cm/ster was determined for the point-like differential cross section, thereby giving evidence against a point-like proton in the time- like region. Evidence for an electromagnetic structure of the proton in the time- like region is also noted. (D.C.W.)

• Research Organization: CERN, Geneva
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-031323
• OSTI ID: 4699540
• Journal Information: Phys. Letters, Journal Name: Phys. Letters Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANTIPROTONS
BEAMS
CROSS SECTIONS
ELECTROMAGNETIC FIELDS
ELECTRONS
INSTRUMENTS
INTERACTIONS
MOMENTUM
PARTICLE MODELS
PERFORMANCE
PHYSICS
POSITRONS
PROTONS