Measurement E213M1027

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:	1.65 — 1.675 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.303	0.038	0.0569	0.0684
54.0	0.4058	0.032	0.0503	0.0716
90.0	0.3684	0.0254	0.0449	0.0516
126.0	0.4205	0.0287	0.0493	0.057
162.0	0.4151	0.0318	0.0469	0.0567
198.0	0.4105	0.0272	0.0468	0.0541
234.0	0.428	0.0356	0.05	0.0614
270.0	0.3984	0.03	0.0477	0.0564
306.0	0.3383	0.0296	0.0438	0.0625
342.0	0.2618	0.0203	0.0523	0.0561

CLAS Physics Database