Measurement E213M849

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(p)
Q²:	3.0 — 3.5 GeV²
W:	1.875 — 1.9 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.539	0.0538	0.0823	0.0983
54.0	0.5425	0.0409	0.0623	0.0745
90.0	0.5019	0.032	0.055	0.0636
126.0	0.5488	0.0367	0.0602	0.0705
162.0	0.5908	0.0468	0.061	0.0769
198.0	0.5516	0.0677	0.0574	0.0888
234.0	0.492	0.0385	0.055	0.0671
270.0	0.5439	0.0453	0.0586	0.074
306.0	0.5385	0.0545	0.0618	0.0824
342.0	0.554	0.0487	0.0837	0.0968

CLAS Physics Database