ON THE PROCESS OF CHARGED $pi$-MESON PRODUCTION ON CARBON BY 670 Mev PROTONS

Journal Article · Sun Jun 01 04:00:00 EDT 1958 · Zhur. Eksptl'. i Teoret. Fiz.

OSTI ID:4309119

Azhgirei, L S; Vzorov, I K; Zrelov, V P; Mescheryakov, M G; Petrukhin, V I

A specially designed magnetic spectrometer was employed to measure the energy spectra of pi /sup +/- and pi /sup -/mesons produced in (p + C)- collisions. The measurements were carried out at an angle of 56 deg to the proton beam. The pi -meson (+ and --) spectra were found to possess a maximum at about 110 Mev and could still be detected as far as ~400 Mev. Smearing out of the high energy side of the spectrum is interpreted as indicating partial formation of pi -mesons within the nuclei on correlated nucleon groups with large relative momenta. The differential cross sections for pi /sup +/- and pi /sup -/--meson formation were found to be (5.1 .8) x 10/sup -27/ and (1.0 plus or minus 0.2) x 10/sup -27/ cm/sup 2/sterad. In the c.m.s. of the two colliding nucleons the pi /sup +/- and pi /sup -/-meson angular distributions are close to isotropic. The measured ratio of pi /sup +/- and 4pSTAi/sup -/- meson yields is not consistent with the predictions of the simple model of pi - meson production via excitation of the nucleon to an intermediate state with T = J = 3/2 and indicates that inelastic collisions in the state with T = 0 play a significant role. (tr-auth)

• Research Organization: Joint Inst. of Nuclear Research
• NSA Number: NSA-12-016613
• OSTI ID: 4309119
• Journal Information: Zhur. Eksptl'. i Teoret. Fiz., Journal Name: Zhur. Eksptl'. i Teoret. Fiz. Vol. Vol: 34
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ANGULAR DISTRIBUTION
ANISOTROPY
CARBON
CHARGED PARTICLES
CROSS SECTIONS
DETECTION
ENERGY RANGE
EXCITATION
INTERACTIONS
ISOSPIN
MAGNETIC FIELDS
MEASURED VALUES
MOMENTUM
NUCLEI
NUCLEONS
PARTICLE MODELS
PHYSICS
PIONS
PLANNING
PRODUCTION
PROTON BEAMS
PROTONS
SCATTERING
SPECTRA
SPECTROMETERS
SPIN
TARGETS