Measurement E213M1009

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:	1.6 — 1.625 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2693	0.0433	0.0606	0.0745
54.0	0.2824	0.0316	0.0517	0.0605
90.0	0.2428	0.0268	0.0437	0.0512
126.0	0.2848	0.024	0.0497	0.0551
162.0	0.2912	0.0222	0.0497	0.0544
198.0	0.2761	0.0213	0.0473	0.0519
234.0	0.2917	0.0245	0.0507	0.0563
270.0	0.3014	0.0244	0.0528	0.0582
306.0	0.2488	0.0215	0.0463	0.051
342.0	0.2028	0.0256	0.0504	0.0565

CLAS Physics Database