Measurement E213M1072

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:	1.775 — 1.8 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2922	0.026	0.0501	0.0565
54.0	0.3154	0.0297	0.0376	0.0479
90.0	0.3338	0.0275	0.0388	0.0476
126.0	0.3867	0.0283	0.0438	0.0522
162.0	0.434	0.0334	0.0451	0.0562
198.0	0.4853	0.0372	0.0508	0.063
234.0	0.3726	0.0244	0.0429	0.0493
270.0	0.4235	0.03	0.0463	0.0552
306.0	0.3836	0.0302	0.044	0.0534
342.0	0.3033	0.0274	0.0502	0.0572

CLAS Physics Database