Measurement E213M1000

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:	1.575 — 1.6 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2105	0.0308	0.0337	0.0477
54.0	0.2026	0.0178	0.0246	0.035
90.0	0.2644	0.0245	0.0296	0.0384
126.0	0.2476	0.0182	0.0275	0.033
162.0	0.2657	0.0186	0.0286	0.0405
198.0	0.2785	0.0226	0.0298	0.0421
234.0	0.2486	0.0208	0.0275	0.0345
270.0	0.2259	0.0199	0.0256	0.0324
306.0	0.2048	0.0188	0.0249	0.0351
342.0	0.1629	0.0241	0.029	0.0411

CLAS Physics Database