Measurement E213M1361

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:	1.85 — 1.875 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1676	0.018	0.0362	0.0404
54.0	0.1718	0.0212	0.0377	0.0432
90.0	0.2085	0.0261	0.0448	0.0518
126.0	0.272	0.0212	0.0523	0.0564
162.0	0.2812	0.0195	0.0526	0.0561
198.0	0.3201	0.025	0.0575	0.0627
234.0	0.2654	0.0217	0.0516	0.056
270.0	0.2755	0.0286	0.0527	0.0599
306.0	0.1963	0.0239	0.0409	0.0474
342.0	0.1684	0.0168	0.0364	0.0401

CLAS Physics Database