Measurement E213M919

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:	3.0 — 3.5 GeV²
W:	2.075 — 2.1 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2355	0.0161	0.0583	0.0605
54.0	0.0057	0.2936	0.0007	0.2936
90.0	0.3722	0.031	0.0667	0.0735
126.0	0.4586	0.0343	0.077	0.0843
162.0	0.5552	0.0372	0.0885	0.096
198.0	0.6018	0.0317	0.0937	0.0989
234.0	0.5389	0.0472	0.0871	0.0991
270.0	0.3892	0.0293	0.0682	0.0743
306.0	0.2823	0.0259	0.0519	0.058
342.0	0.2437	0.0248	0.0595	0.0645

CLAS Physics Database