Measurement E213M1270

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:	1.6 — 1.625 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.1425	0.03	0.035	0.0495
54.0	0.1634	0.0216	0.0284	0.0357
90.0	0.1667	0.0193	0.0291	0.0349
126.0	0.177	0.0197	0.0301	0.0359
162.0	0.2434	0.0281	0.0365	0.0513
198.0	0.1694	0.0183	0.0277	0.0389
234.0	0.2025	0.0236	0.0332	0.0408
270.0	0.1697	0.0213	0.0291	0.0361
306.0	0.1549	0.021	0.0278	0.0349
342.0	0.1205	0.0161	0.033	0.046

CLAS Physics Database