Measurement E213M1082

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:	3.5 — 4.2 GeV²
W:	1.8 — 1.825 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3131	0.0216	0.0465	0.0512
54.0	0.3922	0.0332	0.0539	0.0633
90.0	0.3839	0.0316	0.055	0.0634
126.0	0.4323	0.0327	0.0592	0.0677
162.0	0.5422	0.0523	0.067	0.085
198.0	0.5077	0.0449	0.0637	0.0779
234.0	0.4977	0.0419	0.0644	0.0768
270.0	0.3478	0.0238	0.0512	0.0564
306.0	0.3512	0.0242	0.051	0.0565
342.0	0.3035	0.0243	0.0455	0.0516

CLAS Physics Database