Measurement E151M1837

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:	0.161
Q²:	0.1205 GeV²
W:	1505.0 GeV
E_beam:	1.9889 GeV
ε:	0.8592

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	54.0	-0.5082	0.7712
0.25	66.0	-0.0377	0.6867
0.25	78.0	-1.4253	0.7277
0.25	282.0	-1.26	0.5669
0.25	294.0	-0.1179	0.5934
0.35	66.0	-0.1093	0.6147
0.35	78.0	-0.2729	0.7256
0.35	270.0	0.7669	0.736
0.35	282.0	0.8692	0.5923
0.35	294.0	0.1296	0.7386
0.45	78.0	-1.2793	0.6417
0.45	90.0	0.5365	0.8479
0.45	270.0	-0.2579	0.711
0.45	282.0	-0.3547	0.569
0.45	294.0	-1.2521	0.6584
0.55	78.0	-1.3038	0.7059
0.55	102.0	-0.4187	0.8084
0.55	114.0	-0.2862	0.7299
0.55	126.0	0.7027	0.7856
0.55	234.0	0.4275	0.7194
0.55	270.0	0.2051	0.7137
0.55	282.0	1.0862	0.613
0.55	306.0	-0.7849	0.7376
0.65	102.0	0.228	0.8258
0.65	114.0	0.5754	0.5841
0.65	126.0	0.2829	0.7225
0.65	138.0	0.6307	0.7261
0.65	150.0	-0.9246	0.724
0.65	210.0	0.0478	0.6871
0.65	222.0	-0.1993	0.7103
0.65	234.0	-0.2857	0.6238
0.65	246.0	1.0234	0.6305
0.65	258.0	0.3294	0.7696
0.65	270.0	1.586	0.6903
0.65	294.0	-0.6689	0.6552
0.65	306.0	0.09	0.7691
0.75	102.0	1.1628	0.6342
0.75	114.0	0.2432	0.5119
0.75	126.0	0.577	0.5486
0.75	138.0	-0.5925	0.6707
0.75	150.0	-1.4535	0.7495
0.75	198.0	1.5246	0.5644
0.75	210.0	0.0714	0.614
0.75	222.0	0.3766	0.5798
0.75	234.0	0.4197	0.5104
0.75	246.0	0.0776	0.5263
0.75	258.0	-0.232	0.6154
0.75	294.0	0.0385	0.5846
0.85	90.0	-0.0271	0.6131
0.85	102.0	0.139	0.8145
0.85	114.0	1.2218	0.6334
0.85	126.0	-0.9113	0.7167
0.85	138.0	-0.4394	0.6656
0.85	198.0	-0.0426	0.7475
0.85	210.0	-0.4543	0.6595
0.85	222.0	0.5548	0.5502
0.85	234.0	0.1418	0.5223
0.85	246.0	-0.1225	0.4229
0.85	258.0	0.0022	0.5283
0.85	270.0	0.4202	0.724
0.95	102.0	0.0097	0.5883
0.95	114.0	-0.2257	0.7273
0.95	222.0	0.7092	0.6727
0.95	234.0	-0.3108	0.5854
0.95	246.0	0.9982	0.4901
0.95	258.0	0.2176	0.6195
0.95	270.0	0.7249	0.5461

CLAS Physics Database