Measurement E213M1036

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:	1.675 — 1.7 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3507	0.0256	0.0705	0.075
54.0	0.3742	0.0276	0.054	0.0606
90.0	0.3698	0.047	0.0515	0.0697
126.0	0.4086	0.0252	0.055	0.0605
162.0	0.4838	0.0338	0.0612	0.0699
198.0	0.4558	0.0286	0.0587	0.0653
234.0	0.4909	0.0403	0.0647	0.0762
270.0	0.4316	0.0297	0.0585	0.0656
306.0	0.3866	0.0293	0.0555	0.0627
342.0	0.346	0.0299	0.0698	0.0759

CLAS Physics Database