Measurement E213M1001

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	0.1341	0.0175	0.0255	0.0347
54.0	0.148	0.0119	0.0269	0.0381
90.0	0.1863	0.0154	0.0308	0.0344
126.0	0.2648	0.0179	0.0379	0.0419
162.0	0.3281	0.0236	0.044	0.0499
198.0	0.321	0.0194	0.0434	0.0476
234.0	0.2643	0.0205	0.038	0.0432
270.0	0.2095	0.019	0.0329	0.038
306.0	0.1909	0.0319	0.031	0.0445
342.0	0.1764	0.0146	0.0298	0.042

CLAS Physics Database