Measurement E213M1316

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:	1.725 — 1.75 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2365	0.0244	0.0349	0.0426
54.0	0.3134	0.0406	0.0432	0.0593
90.0	0.2884	0.0243	0.0419	0.0484
126.0	0.3404	0.0351	0.0476	0.0591
162.0	0.3109	0.0301	0.044	0.0533
198.0	0.334	0.0274	0.0458	0.0534
234.0	0.3561	0.0371	0.0483	0.0609
270.0	0.2743	0.0257	0.0406	0.0481
306.0	0.2595	0.0326	0.0383	0.0503
342.0	0.2355	0.0231	0.035	0.042

CLAS Physics Database