Measurement E213M820

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:	3.0 — 3.5 GeV²
W:	1.8 — 1.825 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.4678	0.0413	0.0822	0.092
54.0	0.5304	0.047	0.0654	0.0805
90.0	0.473	0.0334	0.0574	0.0664
126.0	0.5454	0.0389	0.0648	0.0756
162.0	0.6159	0.0377	0.0674	0.0772
198.0	0.6455	0.0505	0.0713	0.0873
234.0	0.5646	0.0391	0.0674	0.078
270.0	0.5077	0.045	0.0607	0.0756
306.0	0.4463	0.0742	0.0573	0.0938
342.0	0.4951	0.0398	0.0841	0.0931

CLAS Physics Database