Measurement E151M2401

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.1017
Q²:	0.2445 GeV²
W:	1805.0 GeV
E_beam:	2.999 GeV
ε:	0.8119

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.75	222.0	-0.1756	1.1157
0.85	78.0	-0.5711	1.0447
0.85	90.0	-1.4791	0.855
0.85	102.0	-0.4239	0.9655
0.85	186.0	-0.9616	1.0915
0.85	198.0	1.2751	0.9834
0.85	210.0	0.6493	0.9985
0.85	222.0	0.9678	0.9157
0.85	234.0	-0.6633	0.8816
0.95	198.0	-0.9558	0.9201
0.95	210.0	0.0834	0.9596
0.95	222.0	-0.4999	0.9058
0.95	234.0	-0.4554	0.9474

CLAS Physics Database