Measurement E213M649

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:	2.4 — 3.0 GeV²
W:	2.05 — 2.075 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.413	0.0214	0.0865	0.0891
54.0	0.4234	0.0246	0.0685	0.0728
90.0	0.5373	0.0234	0.0825	0.0858
126.0	0.5706	0.0254	0.0859	0.0896
162.0	0.829	0.031	0.108	0.1124
198.0	0.7856	0.0594	0.1045	0.1202
234.0	0.6748	0.0328	0.0945	0.1001
270.0	0.5242	0.0249	0.0811	0.0848
306.0	0.4016	0.0276	0.0662	0.0717
342.0	0.4021	0.0236	0.0871	0.0902

CLAS Physics Database