Measurement E213M1352

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:	4.2 — 5.0 GeV²
W:	1.825 — 1.85 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.0967	0.0587	0.0251	0.0639
54.0	0.1654	0.0185	0.0334	0.0381
90.0	0.2244	0.0193	0.0424	0.0466
126.0	0.2502	0.0189	0.0454	0.0492
162.0	0.2465	0.02	0.0441	0.0484
198.0	0.256	0.019	0.0449	0.0488
234.0	0.248	0.0288	0.045	0.0535
270.0	0.2107	0.0207	0.0413	0.0462
306.0	0.1807	0.0193	0.035	0.04
342.0	0.1746	0.021	0.033	0.0391

CLAS Physics Database