Measurement E213M1342

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:	1.8 — 1.825 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1645	0.0153	0.0404	0.0432
54.0	0.2019	0.0196	0.0325	0.038
90.0	0.2119	0.0192	0.0359	0.0407
126.0	0.2566	0.0244	0.042	0.0486
162.0	0.2917	0.0265	0.043	0.0505
198.0	0.2818	0.0278	0.0429	0.0511
234.0	0.328	0.0303	0.0487	0.0573
270.0	0.2368	0.0234	0.0377	0.0444
306.0	0.1779	0.0191	0.0303	0.0359
342.0	0.2036	0.0213	0.0444	0.0493

CLAS Physics Database