Measurement E213M1136

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:	1.95 — 1.975 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.252	0.0226	0.0595	0.0636
54.0	0.3257	0.0274	0.0707	0.0759
90.0	0.3439	0.0321	0.0764	0.0829
126.0	0.4275	0.0372	0.0874	0.095
162.0	0.5339	0.047	0.0999	0.1104
198.0	0.4764	0.03	0.0931	0.0979
234.0	0.429	0.0418	0.0867	0.0962
270.0	0.4104	0.052	0.0857	0.1003
306.0	0.2951	0.0251	0.0669	0.0715
342.0	0.2329	0.0174	0.057	0.0597

CLAS Physics Database