Measurement E213M1406

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:	1.975 — 2.0 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1849	0.0237	0.0436	0.0496
54.0	0.1786	0.0178	0.0445	0.0479
90.0	0.2434	0.0227	0.0534	0.058
126.0	0.334	0.0322	0.0606	0.0686
162.0	0.3714	0.0308	0.0606	0.068
198.0	0.3473	0.0246	0.0584	0.0634
234.0	0.2906	0.0266	0.0565	0.0624
270.0	0.182	0.0112	0.0481	0.0494
306.0	0.155	0.0146	0.0431	0.0456
342.0	0.1425	0.0121	0.04	0.0418

CLAS Physics Database