Measurement E213M1055

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:	1.725 — 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	0.4366	0.0337	0.0608	0.0695
54.0	0.4191	0.0276	0.0604	0.0664
90.0	0.5087	0.0366	0.0693	0.0784
126.0	0.5998	0.056	0.0778	0.0959
162.0	0.5308	0.0314	0.0703	0.1002
198.0	0.5302	0.0342	0.0705	0.1023
234.0	0.6049	0.0361	0.0777	0.0857
270.0	0.4639	0.0307	0.065	0.0718
306.0	0.4154	0.0385	0.0599	0.0712
342.0	0.4063	0.0255	0.0577	0.0631

CLAS Physics Database