Measurement E213M1388

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:	1.925 — 1.95 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1978	0.029	0.0454	0.0539
54.0	0.1756	0.0194	0.0442	0.0483
90.0	0.2542	0.029	0.0567	0.0637
126.0	0.2666	0.0263	0.0573	0.063
162.0	0.3297	0.0293	0.0625	0.069
198.0	0.3145	0.0217	0.0611	0.0648
234.0	0.3051	0.0309	0.0615	0.0688
270.0	0.2052	0.0163	0.0512	0.0537
306.0	0.1937	0.0188	0.0466	0.0503
342.0	0.1882	0.0223	0.0443	0.0496

CLAS Physics Database