Measurement E213M992

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:	1.55 — 1.575 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1686	0.0153	0.039	0.0419
54.0	0.1984	0.0155	0.0433	0.046
90.0	0.2257	0.0216	0.047	0.0517
126.0	0.2954	0.0193	0.056	0.0794
162.0	0.3843	0.0303	0.0674	0.0952
198.0	0.357	0.0251	0.0636	0.0903
234.0	0.27	0.0194	0.0525	0.0742
270.0	0.1922	0.0172	0.0424	0.0458
306.0	0.1772	0.0193	0.0403	0.0447
342.0	0.1713	0.0144	0.0392	0.0417

CLAS Physics Database