Measurement E213M1253

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:	1.55 — 1.575 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.099	0.0127	0.0278	0.0306
54.0	0.0916	0.0109	0.0267	0.0289
90.0	0.1064	0.0117	0.0295	0.0317
126.0	0.1752	0.0186	0.0417	0.0457
162.0	0.2324	0.0218	0.0508	0.0553
198.0	0.1906	0.0214	0.0436	0.0485
234.0	0.1903	0.0192	0.0439	0.0479
270.0	0.1335	0.0156	0.0344	0.0377
306.0	0.0779	0.0085	0.0245	0.0259
342.0	0.1022	0.0158	0.0284	0.0325

CLAS Physics Database