Measurement E213M1370

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:	4.2 — 5.0 GeV²
W:	1.875 — 1.9 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1449	0.0176	0.0316	0.0362
54.0	0.1934	0.021	0.0373	0.0428
90.0	0.2206	0.0433	0.0436	0.0615
126.0	0.2758	0.0277	0.0491	0.0564
162.0	0.3472	0.0285	0.0545	0.0615
198.0	0.3172	0.0234	0.0512	0.0563
234.0	0.2514	0.0206	0.0462	0.0506
270.0	0.2094	0.0287	0.0419	0.0508
306.0	0.2097	0.0297	0.0396	0.0495
342.0	0.1777	0.02	0.035	0.0404

CLAS Physics Database