Measurement E213M1254

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:	1.55 — 1.575 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1507	0.0161	0.0421	0.045
54.0	0.1303	0.0167	0.032	0.0457
90.0	0.1076	0.0127	0.027	0.0299
126.0	0.1035	0.0127	0.0258	0.0287
162.0	0.1501	0.0145	0.0334	0.048
198.0	0.1415	0.015	0.0322	0.0468
234.0	0.1407	0.0179	0.0323	0.037
270.0	0.1236	0.0129	0.0299	0.0326
306.0	0.1197	0.0133	0.0303	0.0429
342.0	0.152	0.0231	0.042	0.0479

CLAS Physics Database