Measurement E213M1126

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:	1.925 — 1.95 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2796	0.0335	0.0561	0.0653
54.0	0.2676	0.0208	0.0411	0.0461
90.0	0.2606	0.0186	0.0433	0.0471
126.0	0.354	0.029	0.0536	0.0609
162.0	0.5074	0.0308	0.0681	0.0748
198.0	0.4223	0.0273	0.0602	0.0661
234.0	0.4132	0.0318	0.0598	0.0677
270.0	0.2986	0.0239	0.0466	0.0524
306.0	0.2599	0.0278	0.0402	0.0489
342.0	0.258	0.0197	0.0537	0.0572

CLAS Physics Database