DIFFERENTIAL ELASTIC PION-PROTON SCATTERING AT 600, 650, AND 750 MEV (thesis)
Technical Report
·
OSTI ID:4113626
The differential elastic cross sections for pi /sup -/-p scattering were measured at 610 plus or minus 20, 655 plus or minus 20, and 750 plus or minus 20 Mev in a propane bubble chamber. The elastic events were selected by a X/sup 2/ test. The total elastic cross sections are 17.7 plus or minus 2.3, 16.6 plus or minus 1.4, and 14.8 plus or minus 1.4 mb, respectively. Cosine- power series were fitted to the angular distributions. The variation of the coefficients with energy indicates J = 3/2 for the 600-Mev resonance and J = 5/2 for the 890-Mev resonance in the pi /sup -/-p interaction. The data were more compatible with odd relative parity for the two: P/sub 32/ and D/sub 52/ or D/sub 32/ and F/sub 5/2/. Thus the scattering data independently give the same assignments for the peaks as the photoproduction data. Resonance at the peaks is not established but is the most plausible explanation for them. Strong absorption of the J =3/2 resonant wave is suggested. (auth)
- Research Organization:
- California. Univ., Berkeley. Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-15-007962
- OSTI ID:
- 4113626
- Report Number(s):
- UCRL-9362
- Country of Publication:
- United States
- Language:
- English
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