Measurement E213M1145

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:	1.975 — 2.0 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2624	0.0223	0.0544	0.0588
54.0	0.1881	0.0869	0.0482	0.0993
90.0	0.3299	0.0253	0.0669	0.0715
126.0	0.3922	0.0348	0.0731	0.0809
162.0	0.4207	0.0426	0.075	0.0862
198.0	0.5035	0.0301	0.084	0.0893
234.0	0.3968	0.0315	0.0729	0.0794
270.0	0.3345	0.0315	0.0678	0.0748
306.0	0.2817	0.024	0.0588	0.0635
342.0	0.2613	0.033	0.0544	0.0636

CLAS Physics Database