Measurement E213M1135

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:	1.95 — 1.975 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2316	0.0254	0.0626	0.0676
54.0	0.2986	0.0229	0.0563	0.0608
90.0	0.3074	0.0254	0.0612	0.0662
126.0	0.4082	0.0353	0.0759	0.0837
162.0	0.4381	0.0238	0.0787	0.0822
198.0	0.4633	0.0275	0.0826	0.087
234.0	0.4122	0.0338	0.0765	0.0837
270.0	0.3705	0.0346	0.0686	0.0768
306.0	0.323	0.0292	0.0598	0.0665
342.0	0.2491	0.0205	0.0658	0.0689

CLAS Physics Database