Measurement E213M847

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:	3.0 — 3.5 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	0.4595	0.0356	0.0747	0.0828
54.0	0.4453	0.0342	0.0522	0.0624
90.0	0.5173	0.0414	0.0565	0.07
126.0	0.5064	0.0302	0.0571	0.0645
162.0	0.6671	0.0799	0.0668	0.1041
198.0	0.6365	0.0339	0.0657	0.074
234.0	0.5864	0.0335	0.0642	0.0725
270.0	0.5291	0.0435	0.0566	0.0714
306.0	0.4984	0.0417	0.0561	0.0699
342.0	0.4976	0.0416	0.0783	0.0887

CLAS Physics Database