Measurement E213M1306

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:	1.7 — 1.725 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2594	0.0303	0.058	0.0654
54.0	0.2878	0.0251	0.0436	0.0503
90.0	0.2834	0.0237	0.0451	0.0509
126.0	0.3196	0.0261	0.0503	0.0566
162.0	0.405	0.039	0.0545	0.0781
198.0	0.3406	0.0281	0.0502	0.0709
234.0	0.3326	0.0274	0.0513	0.0582
270.0	0.2932	0.0253	0.0457	0.0523
306.0	0.2825	0.0305	0.0437	0.0533
342.0	0.2443	0.0273	0.0566	0.0628

CLAS Physics Database