Measurement E213M1099

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:	1.85 — 1.875 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3069	0.0252	0.0657	0.0704
54.0	0.3443	0.0341	0.0528	0.0628
90.0	0.3782	0.0324	0.0576	0.0661
126.0	0.467	0.04	0.0688	0.0796
162.0	0.515	0.0404	0.072	0.0826
198.0	0.4512	0.0301	0.0656	0.0721
234.0	0.4031	0.0341	0.0618	0.0706
270.0	0.4116	0.0321	0.0607	0.0687
306.0	0.3293	0.0261	0.0516	0.0578
342.0	0.2933	0.0354	0.0649	0.0739

CLAS Physics Database