Measurement E213M1252

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:	1.55 — 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	0.0961	0.012	0.0355	0.0505
54.0	0.1142	0.0144	0.0296	0.0329
90.0	0.1206	0.0131	0.0298	0.0325
126.0	0.1696	0.0186	0.0384	0.0427
162.0	0.1637	0.0162	0.0359	0.0394
198.0	0.1843	0.0165	0.0399	0.0432
234.0	0.1324	0.0144	0.0319	0.035
270.0	0.1381	0.0182	0.0331	0.0378
306.0	0.1194	0.0157	0.0308	0.0346
342.0	0.0817	0.011	0.0325	0.0463

CLAS Physics Database