Measurement E213M1101

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(p)
Q²:	3.5 — 4.2 GeV²
W:	1.85 — 1.875 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3377	0.0298	0.0706	0.0766
54.0	0.3831	0.0274	0.06	0.0659
90.0	0.3617	0.0306	0.056	0.0638
126.0	0.3541	0.0352	0.0561	0.0662
162.0	0.4096	0.0501	0.0602	0.0783
198.0	0.3502	0.0293	0.054	0.0614
234.0	0.3819	0.0314	0.059	0.0668
270.0	0.3712	0.0306	0.0571	0.0648
306.0	0.4083	0.0329	0.0635	0.0715
342.0	0.3693	0.0418	0.0733	0.0843

CLAS Physics Database