Measurement E213M1020

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:	1.625 — 1.65 GeV
E_beam:	5.754 GeV

Measurement data
ψ(p), [deg]	dσ/dψ(p), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.338	0.0321	0.0504	0.0597
54.0	0.2827	0.027	0.0346	0.0492
90.0	0.266	0.0237	0.0303	0.0385
126.0	0.2484	0.0202	0.0278	0.0388
162.0	0.2558	0.019	0.0277	0.0401
198.0	0.2703	0.0221	0.0292	0.0412
234.0	0.2888	0.027	0.0315	0.0449
270.0	0.294	0.0249	0.0334	0.0417
306.0	0.3231	0.0296	0.038	0.0542
342.0	0.3215	0.0314	0.0496	0.0587

CLAS Physics Database