Measurement E213M1181

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:	2.075 — 2.1 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2321	0.0237	0.0583	0.063
54.0	0.2061	0.0156	0.0561	0.0583
90.0	0.2962	0.0295	0.0707	0.0766
126.0	0.3386	0.0396	0.0742	0.0841
162.0	0.4077	0.0235	0.0815	0.0849
198.0	0.393	0.0245	0.079	0.0827
234.0	0.3098	0.0203	0.0707	0.0736
270.0	0.3209	0.0376	0.074	0.083
306.0	0.2097	0.0165	0.0562	0.0586
342.0	0.2073	0.0175	0.0552	0.0579

CLAS Physics Database