Measurement E213M1325

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:	1.75 — 1.775 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1761	0.0159	0.0317	0.0355
54.0	0.2279	0.0232	0.0378	0.0444
90.0	0.2028	0.0181	0.0367	0.041
126.0	0.3585	0.0352	0.0534	0.064
162.0	0.3113	0.0276	0.0474	0.0548
198.0	0.3428	0.0297	0.051	0.059
234.0	0.3195	0.0313	0.0493	0.0584
270.0	0.2697	0.0301	0.0436	0.0529
306.0	0.1951	0.0182	0.0346	0.039
342.0	0.2101	0.0232	0.0352	0.0421

CLAS Physics Database