Measurement E213M1064

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(π⁺)
Q²:	3.5 — 4.2 GeV²
W:	1.75 — 1.775 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3116	0.0189	0.0458	0.0747
54.0	0.3814	0.0249	0.0531	0.0586
90.0	0.4188	0.0343	0.0571	0.0666
126.0	0.4993	0.037	0.0645	0.0743
162.0	0.4496	0.0353	0.0592	0.0839
198.0	0.565	0.0499	0.0696	0.0986
234.0	0.4665	0.0341	0.0613	0.0701
270.0	0.4003	0.0277	0.0551	0.0617
306.0	0.3047	0.0196	0.0463	0.0503
342.0	0.3272	0.0245	0.0472	0.0721

CLAS Physics Database