Measurement E213M973

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:	1.5 — 1.525 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2572	0.03	0.0579	0.0652
54.0	0.2558	0.0247	0.0426	0.0492
90.0	0.2885	0.0249	0.0441	0.0506
126.0	0.3434	0.0291	0.0501	0.058
162.0	0.2806	0.0227	0.0413	0.0594
198.0	0.3466	0.025	0.0499	0.0706
234.0	0.3243	0.0244	0.0476	0.0535
270.0	0.2697	0.0243	0.0416	0.0482
306.0	0.257	0.0266	0.043	0.0505
342.0	0.2485	0.0259	0.0553	0.0611

CLAS Physics Database