Measurement E213M1117

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:	1.9 — 1.925 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2114	0.0557	0.0524	0.0765
54.0	0.3127	0.0274	0.0454	0.0531
90.0	0.3658	0.0275	0.0518	0.0586
126.0	0.4493	0.033	0.0612	0.0695
162.0	0.4825	0.043	0.0636	0.0768
198.0	0.5147	0.0318	0.0676	0.0747
234.0	0.3875	0.0418	0.0549	0.0691
270.0	0.335	0.0279	0.0483	0.0558
306.0	0.34	0.0357	0.0478	0.0597
342.0	0.322	0.0263	0.0623	0.0676

CLAS Physics Database