Measurement E213M1450

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:	2.1 — 2.125 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.0955	0.0081	0.0357	0.0366
54.0	0.1447	0.0137	0.0372	0.0396
90.0	0.136	0.0099	0.036	0.0373
126.0	0.2177	0.0183	0.0495	0.0528
162.0	0.256	0.0196	0.0525	0.0561
198.0	0.2559	0.022	0.0527	0.0571
234.0	0.1857	0.0135	0.046	0.048
270.0	0.1768	0.0224	0.0403	0.0461
306.0	0.1022	0.008	0.0319	0.0329
342.0	0.0925	0.0094	0.0351	0.0364

CLAS Physics Database