Measurement E213M991

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:	1.55 — 1.575 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1653	0.0179	0.046	0.0494
54.0	0.2277	0.0207	0.0414	0.0463
90.0	0.2112	0.0197	0.0372	0.0421
126.0	0.2518	0.0239	0.0418	0.0482
162.0	0.3059	0.0218	0.048	0.0527
198.0	0.2812	0.0185	0.0448	0.0485
234.0	0.2692	0.0216	0.044	0.049
270.0	0.223	0.0193	0.0384	0.0429
306.0	0.2126	0.019	0.0395	0.0438
342.0	0.1928	0.0233	0.0499	0.0551

CLAS Physics Database