Measurement E213M821

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:	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	0.464	0.0331	0.0697	0.0989
54.0	0.4755	0.0513	0.0717	0.1011
90.0	0.4352	0.0275	0.0686	0.1035
126.0	0.5465	0.0381	0.0796	0.0883
162.0	0.6098	0.0463	0.0849	0.1197
198.0	0.6329	0.046	0.0868	0.1222
234.0	0.5809	0.0401	0.0828	0.092
270.0	0.4911	0.0454	0.074	0.1056
306.0	0.451	0.0303	0.0694	0.0988
342.0	0.4305	0.0308	0.0663	0.0949

CLAS Physics Database