Measurement E213M1100

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	0.2995	0.0499	0.0579	0.0765
54.0	0.3013	0.019	0.0596	0.0626
90.0	0.4208	0.0362	0.0744	0.0827
126.0	0.4508	0.038	0.0779	0.0866
162.0	0.5363	0.0398	0.0875	0.0961
198.0	0.5426	0.0359	0.0884	0.0954
234.0	0.5235	0.0515	0.0859	0.1001
270.0	0.3888	0.0494	0.0701	0.0857
306.0	0.2976	0.02	0.0592	0.0625
342.0	0.3009	0.0305	0.0585	0.066

CLAS Physics Database