Measurement E213M1378

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:	1.9 — 1.925 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1481	0.0135	0.0378	0.0401
54.0	0.1952	0.0252	0.0315	0.0404
90.0	0.2459	0.0234	0.0394	0.0458
126.0	0.2754	0.0265	0.0447	0.052
162.0	0.3522	0.0287	0.0495	0.0572
198.0	0.2859	0.0264	0.0444	0.0517
234.0	0.2573	0.0251	0.0436	0.0503
270.0	0.2072	0.0168	0.0361	0.0398
306.0	0.2013	0.0233	0.0318	0.0394
342.0	0.1621	0.0165	0.0391	0.0425

CLAS Physics Database