CORE EXCITATION EFFECTS IN PION DOUBLE CHARGE EXCHANGE
1984
4 pages
Published in:
- Phys.Rev.Lett. 52 (1984) 894-897
Citations per year
Abstract: (APS)
Differential cross sections for the pion double-charge-exchange reaction Ca42(π+,π−)Ti42(g.s.) have been measured at θlab=5° at several energies. For T(π+)<200 MeV, σ(5°) are found to be more than an order of magnitude larger than those predicted by conventional double-charge-exchange calculations. It is shown that the observed enhancements can be explained in terms of coherent contributions due to terms proportional to ρ2(r) in the pion-nucleus potential whose importance is dramatically enhanced in the presence of large core-excitation components in Ca42(g.s.).- PI+ NUCLEUS: NUCLEAR REACTION
- PI+ NUCLEUS: CHARGE EXCHANGE
- CHARGE EXCHANGE: PI+ NUCLEUS
- CALCIUM
- CHARGE EXCHANGE: MULTIPLE
- MULTIPLE: CHARGE EXCHANGE
- DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE
- ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION
- SPECTROMETER: EXPERIMENTAL RESULTS
- LAMPF LINAC
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