Measurement E151M1697

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:	0.4081
Q²:	0.0593 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9696

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	66.0	0.1404	0.5812
0.35	78.0	0.3412	0.5934
0.45	66.0	0.2429	0.5829
0.45	78.0	-0.0035	0.4384
0.55	78.0	0.0739	0.4198
0.55	90.0	0.1108	0.4232
0.55	270.0	-0.1775	0.595
0.65	90.0	-0.007	0.4643
0.65	258.0	0.7512	0.3731
0.65	270.0	0.33	0.405
0.75	102.0	-0.9888	0.6675
0.75	114.0	-0.4687	0.5445
0.75	126.0	0.5887	0.5161
0.75	234.0	0.6397	0.5318
0.75	246.0	0.0351	0.493
0.75	258.0	0.5638	0.3582
0.75	270.0	-0.6357	0.4844
0.85	102.0	0.3461	0.6373
0.85	114.0	-0.6486	0.4526
0.85	126.0	0.1235	0.3944
0.85	138.0	-0.1849	0.4282
0.85	150.0	0.5123	0.3895
0.85	162.0	0.4045	0.535
0.85	174.0	-0.357	0.5299
0.85	186.0	0.8356	0.4915
0.85	198.0	-0.4457	0.6334
0.85	210.0	-1.339	0.5199
0.85	222.0	0.2263	0.5633
0.85	234.0	0.7339	0.4836
0.85	246.0	-0.1542	0.4564
0.85	258.0	0.1011	0.5171
0.95	114.0	0.3063	0.5686
0.95	126.0	0.0737	0.4637
0.95	138.0	-0.0097	0.4552
0.95	150.0	0.9223	0.368
0.95	162.0	0.5662	0.4491
0.95	174.0	0.3103	0.4777
0.95	186.0	0.81	0.4767
0.95	198.0	-0.4734	0.5381
0.95	210.0	0.7145	0.4404

CLAS Physics Database