Measurement E213M975

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:	3.5 — 4.2 GeV²
W:	1.5 — 1.525 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2877	0.025	0.0585	0.0636
54.0	0.2749	0.0279	0.0457	0.0536
90.0	0.2363	0.0224	0.038	0.0441
126.0	0.2852	0.0226	0.0429	0.0485
162.0	0.2992	0.0219	0.0441	0.0629
198.0	0.2861	0.024	0.0427	0.0606
234.0	0.2557	0.0252	0.0396	0.047
270.0	0.2383	0.0196	0.0381	0.0429
306.0	0.3155	0.0264	0.0507	0.0571
342.0	0.2959	0.0295	0.0599	0.0668

CLAS Physics Database