ON THE $pi$ MESON PRODUCTION IN $pi$-N INTERACTIONS
Journal Article
·
· Zhur. Eksptl'. i Teoret. Fiz.
OSTI ID:4157709
The measured distribution of pi mesons from the reaction pi + N yields 2 pi + N at 1.0and 1.4 Bev is described only qualitatively by a model which indicates that the supplementary meson is produced only through the formation of an Isobar state ( T = 3/2, I =3/2, l = 1) with finite width. The Fermi statistical theory does not explain these distributions while considerations, within the theory, of the isobar as a particle with a definite mass M = 1.32 (in units of nucleon mass) slso results only in qualitative agreement with the experiment. A correlation considering a possible resonance pi -- pi interaction with a new particle with mass M = 0.47 which decays into pi mesons showed better agreement with experiment. An attempt is made to show that satisfactory description of the experimental data can be achieved in statistical theory without considering meson-meson interactions. The finite width of isobar decay is considered in calculating pi meson spectra produced by the decay. The finite state of pi + pi + N is examined as a pi -N interaction. The total cross section of pi + N yields 2 pi + N is expressed as d sigma = C/sub 1/d sigma /sub 1/ + C/sub 2/d sigma /sub 2/ where d sigma / syb 2/ is the cross section for the three particles without interaction and C/sub 1/ and C/sub 2/ are determined by the statistical weights for pi meson and isobar (M = 1.32) and two pi meson and nucleon production; d sigma /sub 1/ and d sigma /sub 2/ are normalized for the same number of mesons. (R.V.J.)
- Research Organization:
- Lebedev Inst., Moscow
- NSA Number:
- NSA-14-022343
- OSTI ID:
- 4157709
- Journal Information:
- Zhur. Eksptl'. i Teoret. Fiz., Journal Name: Zhur. Eksptl'. i Teoret. Fiz. Vol. Vol: 38
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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