Measurement E213M1011

Experiment:	E1-6, 2025
Year:	2001	Measurement comment: The angle ψ is the angle between the plane defined by the three-momenta of the hadron (in parentheses) and the target proton, and the plane defined by the three-momenta of the other two final-state hadrons Experiment comment: Experiment year: 2001—2002
Spokespersons:	R.W. Gothe, A. Trivedi
Reaction:	ep → π⁺π⁻p
Polarization:	none
Quantity:	dσ/dψ(p)
Q²:	3.5 — 4.2 GeV²
W:	1.6 — 1.625 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2736	0.0208	0.0601	0.0854
54.0	0.3053	0.0241	0.0555	0.0605
90.0	0.2282	0.0229	0.0411	0.047
126.0	0.2548	0.0229	0.0446	0.0501
162.0	0.2293	0.0206	0.0402	0.0452
198.0	0.239	0.0247	0.0418	0.0486
234.0	0.1919	0.0253	0.0349	0.0431
270.0	0.2344	0.02	0.0423	0.0468
306.0	0.266	0.0223	0.0494	0.0542
342.0	0.3998	0.041	0.0795	0.1121

CLAS Physics Database