Measurement E213M1054

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:	1.725 — 1.75 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.3791	0.0316	0.0626	0.0701
54.0	0.4946	0.0357	0.0543	0.065
90.0	0.4951	0.0325	0.0531	0.0623
126.0	0.4895	0.0313	0.0525	0.0611
162.0	0.5715	0.042	0.0573	0.0711
198.0	0.536	0.0366	0.0542	0.0654
234.0	0.5066	0.039	0.0547	0.0672
270.0	0.5099	0.0325	0.0542	0.0632
306.0	0.4094	0.0244	0.0475	0.0534
342.0	0.3989	0.0324	0.0633	0.0711

CLAS Physics Database