Measurement E213M1108

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:	1.875 — 1.9 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2874	0.0257	0.0647	0.0696
54.0	0.3251	0.0222	0.0524	0.0569
90.0	0.3592	0.0274	0.0572	0.0634
126.0	0.4971	0.0445	0.0751	0.0873
162.0	0.4864	0.0364	0.0727	0.0813
198.0	0.5609	0.0485	0.0828	0.0959
234.0	0.4167	0.0347	0.0657	0.0743
270.0	0.3065	0.0224	0.0514	0.056
306.0	0.3427	0.0286	0.0549	0.0619
342.0	0.2506	0.0177	0.0604	0.0629

CLAS Physics Database