Measurements of quasi-free pion single charge exchange (SCX) in {sup 3}He at T{sub {phi}} = 245 MeV

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:387026

Dowell, M L; Beise, E J; Dodson, G W ^[1]

---

1. and others

The results of two SCX measurements performed at LAMPF will be presented {sup 3}He({pi}{sup {+-}}, {pi}{sup 0}) and {sup 3}He({pi}{sup {+-}}, {pi}{sup 0}p). The experimental set up consisted of the LAMPF {pi}{sup 0} spectrometer, an array of {Delta}E-E plastic scintillation counters, and a liquid {sup 3}He target. In the single-arm measurements, doubly differential cross sections were measured at no laboratory angles between 62{degrees} and 128{degrees}. Coincidence measurements were performed at no laboratory angles between 70{degrees} and 120{degrees}. In {sup 3}He({pi}{sup +}, {pi}{sup 0}p), the quasi-free charge exchange process is expected to dominate. In {sup 3}He({pi}{sup -}, {pi}{sup 0}p), at least two nucleons must be involved. These coincidence measurements will be compared with the single-arm measurements to estimate the relative contribution of quasi-free charge exchange and other processes to inclusive pion SCX on {sup 3}He. In addition, comparisons with recent measurements of {pi}{sup {+-}} quasi-elastic scattering on {sup 3}He and DWIA calculations will be shown.

• OSTI ID: 387026
• Report Number(s): CONF-931044--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGE-EXCHANGE REACTIONS
HELIUM 3 TARGET
MEV RANGE 100-1000
PION REACTIONS
QUASI-ELASTIC SCATTERING