Measurement E213M1163

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:	2.025 — 2.05 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1947	0.0143	0.0469	0.0491
54.0	0.2043	0.0151	0.0486	0.0509
90.0	0.3204	0.0334	0.0646	0.0727
126.0	0.3572	0.0323	0.0668	0.0742
162.0	0.4578	0.0267	0.0756	0.0802
198.0	0.4786	0.0303	0.0792	0.0848
234.0	0.3847	0.0323	0.07	0.0771
270.0	0.2861	0.0221	0.061	0.0649
306.0	0.2361	0.0221	0.0522	0.0567
342.0	0.1952	0.0175	0.047	0.0502

CLAS Physics Database