Measurement E151M1749

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:	0.6182
Q²:	0.2445 GeV²
W:	1325.0 GeV
E_beam:	1.9889 GeV
ε:	0.9002

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	270.0	-0.7735	0.7097
0.65	90.0	-0.2275	0.6722
0.65	102.0	0.3161	0.6778
0.65	258.0	-0.4092	0.6641
0.65	270.0	0.5535	0.7327
0.65	282.0	0.8599	0.693
0.65	294.0	1.3629	0.5759
0.75	78.0	-0.3707	0.602
0.75	90.0	-0.6036	0.6119
0.75	102.0	0.9063	0.6107
0.75	114.0	0.729	0.6138
0.75	246.0	0.3866	0.6418
0.75	258.0	-0.1336	0.4985
0.75	270.0	-0.6755	0.5278
0.75	282.0	0.3177	0.7352
0.85	90.0	0.2838	0.4994
0.85	102.0	0.2761	0.5142
0.85	114.0	-0.0491	0.6392
0.85	126.0	-0.621	0.6833
0.85	138.0	1.3577	0.6363
0.85	222.0	0.6548	0.7165
0.85	234.0	-0.5753	0.5557
0.85	246.0	-0.1871	0.6927
0.85	258.0	1.0213	0.5182
0.85	270.0	0.9252	0.456
0.85	282.0	0.0892	0.5274
0.85	294.0	-0.716	0.5012
0.95	90.0	-0.4531	0.5431
0.95	102.0	1.4668	0.536
0.95	114.0	0.3448	0.6485
0.95	126.0	0.7584	0.5788
0.95	138.0	0.0531	0.6626
0.95	150.0	0.7789	0.5779
0.95	234.0	0.097	0.5798
0.95	246.0	-0.2594	0.6517
0.95	258.0	0.8538	0.4297
0.95	270.0	0.658	0.5286
0.95	282.0	-0.4745	0.5947
0.95	294.0	-1.0611	0.5693

CLAS Physics Database