Measurement E213M1405

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:	1.975 — 2.0 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1381	0.0132	0.04	0.0421
54.0	0.1492	0.0183	0.0335	0.0382
90.0	0.1905	0.014	0.0412	0.0436
126.0	0.2792	0.0189	0.0538	0.0571
162.0	0.3348	0.025	0.0552	0.0606
198.0	0.3475	0.0282	0.0555	0.0623
234.0	0.2796	0.0227	0.0528	0.0574
270.0	0.1913	0.0136	0.041	0.0431
306.0	0.1662	0.0166	0.0344	0.0382
342.0	0.1482	0.0135	0.041	0.0432

CLAS Physics Database