Measurement E213M1397

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:	1.95 — 1.975 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1674	0.0217	0.0435	0.0486
54.0	0.1697	0.0133	0.0454	0.0473
90.0	0.2201	0.0174	0.0543	0.057
126.0	0.3117	0.0302	0.0631	0.0699
162.0	0.3097	0.0256	0.0611	0.0663
198.0	0.318	0.0229	0.0617	0.0658
234.0	0.288	0.0226	0.0605	0.0645
270.0	0.1995	0.0159	0.0518	0.0542
306.0	0.2046	0.0271	0.0491	0.0561
342.0	0.1851	0.0174	0.0455	0.0487

CLAS Physics Database