Measurement E213M1180

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:	2.075 — 2.1 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.163	0.0158	0.0475	0.05
54.0	0.1794	0.016	0.0414	0.0443
90.0	0.2438	0.0206	0.0522	0.0561
126.0	0.3527	0.0238	0.0677	0.0717
162.0	0.3719	0.0304	0.0693	0.0757
198.0	0.4864	0.0326	0.0833	0.0895
234.0	0.3357	0.0415	0.0658	0.0778
270.0	0.2452	0.0219	0.0519	0.0564
306.0	0.1891	0.0232	0.0419	0.0479
342.0	0.1787	0.0166	0.0493	0.052

CLAS Physics Database