Measurement E213M685

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:	1.425 — 1.45 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1632	0.0194	0.0431	0.0473
54.0	0.1887	0.0195	0.035	0.0401
90.0	0.1901	0.0193	0.0325	0.0378
126.0	0.2827	0.0222	0.0448	0.0501
162.0	0.2661	0.0196	0.0417	0.0461
198.0	0.2659	0.0199	0.0418	0.0462
234.0	0.2079	0.0173	0.0341	0.0383
270.0	0.1817	0.0236	0.0315	0.0393
306.0	0.1693	0.0183	0.0323	0.0372
342.0	0.1895	0.0209	0.0478	0.0522

CLAS Physics Database