Measurement E213M1209

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(p)
Q²:	4.2 — 5.0 GeV²
W:	1.425 — 1.45 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1076	0.018	0.0382	0.0422
54.0	0.0726	0.0108	0.0245	0.0268
90.0	0.0868	0.012	0.0258	0.0285
126.0	0.0946	0.0137	0.0271	0.0304
162.0	0.1314	0.0201	0.035	0.0404
198.0	0.1262	0.0147	0.034	0.037
234.0	0.0961	0.0127	0.0277	0.0305
270.0	0.0788	0.0125	0.0247	0.0276
306.0	0.0997	0.0175	0.0313	0.0359
342.0	0.097	0.0122	0.0361	0.0381

CLAS Physics Database