Measurement E213M172

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:	2.0 — 2.4 GeV²
W:	1.45 — 1.475 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.6791	0.045	0.1897	0.195
54.0	0.6172	0.0395	0.1238	0.13
90.0	0.6683	0.04	0.1082	0.1154
126.0	0.7597	0.0389	0.1067	0.1135
162.0	0.7942	0.0379	0.1062	0.1127
198.0	0.7691	0.0459	0.1038	0.1135
234.0	0.7729	0.039	0.1089	0.1157
270.0	0.751	0.042	0.1173	0.1246
306.0	0.6411	0.0418	0.1274	0.1341
342.0	0.5333	0.0579	0.1809	0.19

CLAS Physics Database