Measurement E213M1333

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:	1.775 — 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	0.1788	0.0185	0.0389	0.0431
54.0	0.1932	0.0202	0.0303	0.0364
90.0	0.2198	0.0252	0.0342	0.0425
126.0	0.2379	0.0265	0.0377	0.0461
162.0	0.3366	0.028	0.0451	0.0531
198.0	0.3234	0.0288	0.0451	0.0535
234.0	0.2814	0.0322	0.042	0.0529
270.0	0.2252	0.0265	0.0346	0.0436
306.0	0.1985	0.0174	0.0309	0.0354
342.0	0.1651	0.0174	0.0379	0.0417

CLAS Physics Database