Measurement E213M1343

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:	4.2 — 5.0 GeV²
W:	1.8 — 1.825 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.186	0.0234	0.0322	0.0398
54.0	0.2374	0.0277	0.0381	0.0472
90.0	0.2333	0.0226	0.0404	0.0463
126.0	0.3258	0.0444	0.0495	0.0665
162.0	0.3283	0.0282	0.0483	0.056
198.0	0.263	0.0217	0.0426	0.0478
234.0	0.2797	0.0255	0.0447	0.0515
270.0	0.2324	0.0319	0.04	0.0512
306.0	0.2083	0.022	0.0357	0.0419
342.0	0.1591	0.0156	0.0301	0.0339

CLAS Physics Database