Measurement E213M1045

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:	1.7 — 1.725 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3996	0.0405	0.0759	0.086
54.0	0.4714	0.0323	0.0581	0.0665
90.0	0.5532	0.0377	0.0626	0.0886
126.0	0.6094	0.0404	0.0669	0.0943
162.0	0.5812	0.0366	0.0611	0.0868
198.0	0.6539	0.0451	0.0686	0.0967
234.0	0.4789	0.0383	0.0566	0.0798
270.0	0.6291	0.0461	0.0694	0.0979
306.0	0.4773	0.0354	0.059	0.0688
342.0	0.4239	0.0325	0.0768	0.0834

CLAS Physics Database