Measurement E213M1369

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:	1.875 — 1.9 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1802	0.0176	0.0435	0.0469
54.0	0.1733	0.0163	0.0312	0.0352
90.0	0.227	0.0281	0.0403	0.0491
126.0	0.3031	0.0326	0.051	0.0605
162.0	0.3421	0.0268	0.0524	0.0588
198.0	0.3052	0.0226	0.0491	0.054
234.0	0.2959	0.0297	0.0501	0.0582
270.0	0.2059	0.0256	0.0377	0.0456
306.0	0.2134	0.0328	0.0348	0.0479
342.0	0.1841	0.0209	0.0435	0.0483

CLAS Physics Database