Measurement E213M1190

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:	2.1 — 2.125 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1742	0.0136	0.0426	0.0447
54.0	0.1711	0.0207	0.0441	0.0487
90.0	0.2576	0.0244	0.0542	0.0594
126.0	0.3252	0.0244	0.0574	0.0623
162.0	0.3751	0.0216	0.0601	0.0639
198.0	0.381	0.0316	0.0601	0.0679
234.0	0.3115	0.029	0.0566	0.0635
270.0	0.2416	0.0194	0.0531	0.0565
306.0	0.1683	0.0142	0.0438	0.0461
342.0	0.1706	0.0132	0.0424	0.0444

CLAS Physics Database