Measurement E213M1144

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	0.2392	0.0225	0.0575	0.0617
54.0	0.2881	0.0278	0.049	0.0564
90.0	0.2994	0.026	0.0556	0.0614
126.0	0.4336	0.0404	0.0713	0.0819
162.0	0.4728	0.0302	0.0741	0.0801
198.0	0.458	0.0326	0.0726	0.0795
234.0	0.3752	0.0288	0.0653	0.0714
270.0	0.3564	0.03	0.0604	0.0674
306.0	0.2357	0.044	0.0437	0.062
342.0	0.252	0.0181	0.0588	0.0616

CLAS Physics Database