Measurement E213M1280

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:	1.625 — 1.65 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁺), [deg]	dσ/dψ(π⁺), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.12	0.017	0.0236	0.0337
54.0	0.1318	0.014	0.0252	0.0289
90.0	0.1589	0.0168	0.0283	0.0404
126.0	0.2406	0.0262	0.0366	0.0515
162.0	0.2334	0.0193	0.0352	0.0499
198.0	0.2076	0.0193	0.0327	0.046
234.0	0.2246	0.021	0.0348	0.0494
270.0	0.1704	0.0168	0.0292	0.0418
306.0	0.1203	0.0166	0.0239	0.0291
342.0	0.1261	0.0175	0.0239	0.0335

CLAS Physics Database