Measurement E213M1019

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:	3.5 — 4.2 GeV²
W:	1.625 — 1.65 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1798	0.0154	0.0322	0.0456
54.0	0.2226	0.0241	0.0363	0.0511
90.0	0.2658	0.0198	0.0405	0.0451
126.0	0.3379	0.0248	0.0467	0.0529
162.0	0.3802	0.0353	0.0498	0.0611
198.0	0.3721	0.0248	0.0495	0.0554
234.0	0.3686	0.0292	0.0495	0.0575
270.0	0.2874	0.0226	0.0424	0.048
306.0	0.2107	0.0174	0.0356	0.0502
342.0	0.1976	0.015	0.034	0.0488

CLAS Physics Database