Measurement E213M1162

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:	2.025 — 2.05 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1899	0.0152	0.0472	0.0496
54.0	0.2378	0.0218	0.0421	0.0474
90.0	0.3116	0.03	0.0542	0.062
126.0	0.366	0.0299	0.0604	0.0674
162.0	0.4746	0.029	0.0718	0.0774
198.0	0.4667	0.0301	0.0703	0.0765
234.0	0.3568	0.027	0.0592	0.0651
270.0	0.3121	0.0234	0.0537	0.0586
306.0	0.205	0.0179	0.0384	0.0423
342.0	0.182	0.0212	0.0466	0.0512

CLAS Physics Database