Measurement E151M2231

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:	0.6807
Q²:	0.496 GeV²
W:	1385.0 GeV
E_beam:	2.999 GeV
ε:	0.9169

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	90.0	1.6049	0.9183
0.55	78.0	-0.2524	0.7151
0.55	90.0	1.2528	0.8377
0.55	102.0	1.8319	0.7545
0.55	270.0	1.5768	0.8905
0.65	66.0	1.1073	0.8016
0.65	78.0	-0.5253	0.6908
0.65	90.0	0.403	0.7311
0.65	102.0	-0.7912	0.7307
0.65	258.0	-0.5977	0.8864
0.65	270.0	-0.6615	0.873
0.65	282.0	-0.2214	0.7534
0.65	294.0	1.1531	0.7568
0.75	66.0	0.2878	0.8212
0.75	78.0	0.6165	0.7162
0.75	90.0	0.023	0.6494
0.75	102.0	-0.1538	0.8196
0.75	114.0	-1.0065	0.8558
0.75	234.0	-1.653	0.7574
0.75	246.0	0.9011	0.6733
0.75	258.0	0.4181	0.6868
0.75	270.0	-0.6735	0.6446
0.75	282.0	1.023	0.7691
0.75	294.0	-0.4638	0.8285
0.75	306.0	-0.943	0.7667
0.85	42.0	1.2948	0.7173
0.85	78.0	0.0112	0.705
0.85	90.0	-0.6596	0.7986
0.85	102.0	0.8083	0.864
0.85	126.0	0.5981	0.9614
0.85	222.0	0.3991	0.7352
0.85	234.0	0.4248	0.777
0.85	246.0	-0.8706	0.7843
0.85	258.0	0.2934	0.7306
0.85	270.0	-0.2657	0.59
0.85	282.0	0.5252	0.6767
0.85	294.0	0.2828	0.6161
0.85	306.0	-0.2966	0.5925
0.85	318.0	-1.3506	0.627
0.85	330.0	0.3023	0.7115
0.95	90.0	-0.595	0.8045
0.95	222.0	0.9324	0.8504
0.95	234.0	-0.4224	0.7216
0.95	246.0	-0.5679	0.7882
0.95	258.0	-0.1313	0.8199
0.95	270.0	-0.0149	0.7387
0.95	282.0	-0.0244	0.7729
0.95	294.0	0.1812	0.7155
0.95	306.0	1.0006	0.6226
0.95	318.0	0.3363	0.683
0.95	330.0	-0.2398	0.6923

CLAS Physics Database