Measurement E213M928

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:	2.1 — 2.125 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2464	0.0233	0.0568	0.0614
54.0	0.2521	0.021	0.0459	0.0505
90.0	0.3245	0.0446	0.0565	0.072
126.0	0.437	0.0338	0.0681	0.0761
162.0	0.5671	0.0347	0.0819	0.089
198.0	0.5913	0.0499	0.0843	0.098
234.0	0.4145	0.0366	0.0661	0.0756
270.0	0.3315	0.028	0.0572	0.0637
306.0	0.23	0.0159	0.0429	0.0457
342.0	0.1993	0.0147	0.0521	0.0542

CLAS Physics Database