Measurement E213M1154

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:	2.0 — 2.025 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.226	0.0209	0.0463	0.0508
54.0	0.2393	0.017	0.0497	0.0525
90.0	0.2794	0.0207	0.0567	0.0604
126.0	0.3998	0.042	0.0672	0.0793
162.0	0.4378	0.0262	0.0701	0.0748
198.0	0.4326	0.0241	0.0698	0.0739
234.0	0.3807	0.0306	0.0656	0.0724
270.0	0.324	0.0281	0.0602	0.0665
306.0	0.2365	0.021	0.0486	0.0529
342.0	0.1951	0.0139	0.0436	0.0458

CLAS Physics Database