Measurement E213M1128

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(p)
Q²:	3.5 — 4.2 GeV²
W:	1.925 — 1.95 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3111	0.0298	0.0648	0.0713
54.0	0.3422	0.0354	0.0558	0.066
90.0	0.3091	0.0269	0.0504	0.0571
126.0	0.2975	0.0204	0.0512	0.0551
162.0	0.3258	0.0212	0.0529	0.0569
198.0	0.3901	0.0318	0.0597	0.0676
234.0	0.3112	0.0229	0.053	0.0577
270.0	0.2979	0.0292	0.0497	0.0576
306.0	0.3093	0.0286	0.0519	0.0593
342.0	0.2993	0.0223	0.0629	0.0667

CLAS Physics Database