Measurement E213M1451

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:	2.1 — 2.125 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.111	0.0125	0.0375	0.0396
54.0	0.122	0.0122	0.0429	0.0446
90.0	0.1512	0.0142	0.0452	0.0474
126.0	0.1931	0.0119	0.0476	0.049
162.0	0.2532	0.0175	0.0524	0.0552
198.0	0.2726	0.0188	0.0544	0.0576
234.0	0.2111	0.0141	0.0501	0.0521
270.0	0.1926	0.0244	0.0503	0.0559
306.0	0.1245	0.0108	0.0435	0.0448
342.0	0.1	0.0092	0.0363	0.0375

CLAS Physics Database