Measurement E213M1244

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:	4.2 — 5.0 GeV²
W:	1.525 — 1.55 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.0756	0.0095	0.0236	0.0254
54.0	0.1021	0.0108	0.0284	0.0405
90.0	0.1201	0.0148	0.0319	0.0351
126.0	0.179	0.0185	0.0423	0.06
162.0	0.1738	0.0196	0.0409	0.0577
198.0	0.221	0.02	0.0493	0.0695
234.0	0.2032	0.0259	0.0469	0.0663
270.0	0.1211	0.0166	0.0321	0.0361
306.0	0.0727	0.0099	0.0232	0.0333
342.0	0.099	0.0159	0.0278	0.032

CLAS Physics Database