Measurement E213M721

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:	3.0 — 3.5 GeV²
W:	1.525 — 1.55 GeV
E_beam:	5.754 GeV

Measurement data
ψ(π⁻), [deg]	dσ/dψ(π⁻), [μb/rad]	uncertainty	syst. uncert.	total uncert.
18.0	0.2687	0.0284	0.0562	0.0629
54.0	0.3057	0.0287	0.0476	0.0555
90.0	0.3305	0.0231	0.0479	0.0532
126.0	0.3582	0.0296	0.0506	0.0586
162.0	0.3402	0.0245	0.0474	0.0534
198.0	0.3919	0.0259	0.0538	0.0597
234.0	0.328	0.0218	0.0465	0.0514
270.0	0.3189	0.0219	0.0468	0.0517
306.0	0.2748	0.0257	0.0439	0.0508
342.0	0.229	0.0237	0.0516	0.0568

CLAS Physics Database