Auerbach, L.B.
DSIG/DOMEGA
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PRECISE MEASUREMENT OF THE PION CHARGE EXCHANGE FORWARD DIFFERENTIAL CROSS-SECTION AT 522-MEV/C

Gaille, F.C. ; Highland, V.L. ; Auerbach, L.B. ; et al.
Phys.Rev.D 30 (1984) 2408-2410, 1984.
Inspire Record 215121 DOI 10.17182/hepdata.23596

A precise measurement of the differential cross section at zero degrees for the pion charge-exchange reaction π−p→π0n at pπ=522 MeV/c has been made. The result is dσdΩ (0∘)=4.32±0.11 mb/sr.

1 data table
Table 1

DIFFERENTIAL CROSS SECTION AT THETA = 0.


Neutron-Proton Forward Angle Elastic Cross-Sections at 790-MeV

Carlini, R. ; Dieterle, B. ; Donahue, J. ; et al.
Phys.Rev.Lett. 41 (1978) 1341-1344, 1978.
Inspire Record 136558 DOI 10.17182/hepdata.20861

High-statistics measurements of the absolute differential cross section for n−p scattering have been made over neutron c.m.-system scattering angles 9.5°<θ*<64.5°. The statistical error is 1.7 to 3.3% for 2°-wide angular bins, and the systematic error is 2.7 to 3.3%. The cross section is fitted by dσdΩ*=A exp(bt), with A=10.27±0.36 mb/sr, b=5.00±0.05, and 0.01<−t<0.39 (GeV/c)2. For the ratio of the real to the imaginary part of the forward-scattering amplitude we obtained αn>~−0.43±0.04, consistent with other less precise determinations of αn.

1 data table
Table 1

EXPONENTIAL FIT TO D(SIG)/DOMEGA OVER -T = 0.01 TO 0.39 GEV**2 (THETA = 9.5 TO 64.5 DEG).