Measurement E213M1307

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	0.2459	0.0322	0.0424	0.0598
54.0	0.2555	0.0226	0.0442	0.0628
90.0	0.3431	0.0337	0.0546	0.0641
126.0	0.3534	0.0322	0.057	0.0655
162.0	0.401	0.0371	0.0596	0.0702
198.0	0.3914	0.0306	0.0583	0.0658
234.0	0.3595	0.0296	0.0568	0.0641
270.0	0.3809	0.044	0.0579	0.0728
306.0	0.271	0.0262	0.0456	0.0649
342.0	0.2627	0.0253	0.0437	0.0615

CLAS Physics Database