Measurement E213M1081

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:	3.5 — 4.2 GeV²
W:	1.8 — 1.825 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2952	0.0197	0.0543	0.0578
54.0	0.3775	0.0266	0.0443	0.0517
90.0	0.3562	0.0268	0.0431	0.0507
126.0	0.4301	0.0308	0.0496	0.0584
162.0	0.4822	0.033	0.0508	0.0606
198.0	0.4855	0.0398	0.0521	0.0656
234.0	0.4261	0.0337	0.0495	0.0599
270.0	0.3988	0.0292	0.0453	0.0539
306.0	0.3488	0.032	0.0428	0.0534
342.0	0.3198	0.0269	0.0574	0.0634

CLAS Physics Database