Measurement E213M1063

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:	1.75 — 1.775 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3605	0.0332	0.059	0.0677
54.0	0.3961	0.0339	0.0456	0.0569
90.0	0.3899	0.0282	0.044	0.0523
126.0	0.4488	0.0361	0.0498	0.0615
162.0	0.4699	0.0351	0.0482	0.0596
198.0	0.4904	0.0382	0.0513	0.064
234.0	0.4237	0.0279	0.0479	0.0555
270.0	0.418	0.034	0.0468	0.0578
306.0	0.3899	0.0292	0.0454	0.054
342.0	0.3981	0.0405	0.0614	0.0735

CLAS Physics Database