Measurement E151M1895

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:	0.0505
Q²:	0.0593 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.8011

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	0.3651	1.0308
0.35	90.0	1.4673	0.9118
0.35	282.0	-0.387	0.7052
0.45	78.0	0.3468	0.8168
0.45	126.0	2.0362	0.8206
0.45	270.0	-2.1585	0.6582
0.45	282.0	-0.5528	0.7984
0.45	294.0	1.112	0.8771
0.55	126.0	-0.2016	0.9862
0.55	210.0	-1.205	0.8333
0.55	222.0	-1.1805	0.8015
0.55	258.0	2.0498	0.6695
0.55	270.0	-0.8738	0.6778
0.55	282.0	0.3693	0.8403
0.65	78.0	-0.0085	0.9581
0.65	114.0	0.5687	0.8708
0.65	126.0	-0.9979	0.7967
0.65	138.0	0.1122	0.804
0.65	150.0	0.5046	0.9221
0.65	198.0	-0.4768	0.7526
0.65	210.0	0.2145	0.8024
0.65	222.0	0.976	0.6875
0.65	258.0	-0.039	0.9197
0.65	294.0	-0.2805	0.6919
0.75	66.0	-1.716	0.711
0.75	78.0	0.6671	0.8741
0.75	126.0	-0.9357	0.8617
0.75	138.0	0.8943	0.8657
0.75	198.0	-1.0379	0.836
0.75	210.0	-1.0023	0.7507
0.75	222.0	-0.8438	0.6204
0.75	234.0	-1.4217	0.7516
0.75	270.0	-1.0213	0.5991
0.75	282.0	-0.2242	0.6828
0.75	294.0	-0.3069	0.9205
0.85	102.0	0.2431	0.701
0.85	114.0	0.2976	0.6482
0.85	126.0	-0.771	0.7356
0.85	198.0	1.2653	0.8442
0.85	210.0	-0.4076	0.6745
0.85	222.0	0.657	0.6935
0.85	234.0	-0.5696	0.707
0.85	246.0	-1.7954	0.7837

CLAS Physics Database