Measurement E213M1018

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:	1.625 — 1.65 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2655	0.0386	0.0449	0.064
54.0	0.2487	0.0231	0.0304	0.0428
90.0	0.3293	0.0265	0.0357	0.0445
126.0	0.31	0.0235	0.0334	0.0409
162.0	0.3514	0.0246	0.0354	0.0502
198.0	0.3172	0.0238	0.0325	0.0462
234.0	0.309	0.0239	0.0331	0.0408
270.0	0.2997	0.0267	0.0331	0.0425
306.0	0.2167	0.0214	0.0277	0.039
342.0	0.2351	0.0298	0.0423	0.0602

CLAS Physics Database