Measurement E213M209

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:	2.0 — 2.4 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	0.5721	0.0369	0.1387	0.1435
54.0	0.6246	0.0355	0.1457	0.15
90.0	0.7852	0.055	0.1659	0.1748
126.0	0.9317	0.0539	0.1822	0.19
162.0	1.0245	0.0424	0.1929	0.2724
198.0	1.1399	0.0509	0.2076	0.2959
234.0	0.9937	0.0507	0.1905	0.1971
270.0	0.7823	0.0506	0.1657	0.1733
306.0	0.631	0.0376	0.1472	0.1519
342.0	0.5912	0.034	0.142	0.1461

CLAS Physics Database