Measurement E151M558

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_UL
ε_L:	0.5007
Q²:	0.2915 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.8618

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	102.0	0.5531	0.7824	0.0452
0.65	258.0	-0.0327	0.7154	0.0301
0.75	90.0	0.2342	0.6754	0.0332
0.75	102.0	-0.1589	0.6218	0.0315
0.75	114.0	-0.3204	0.7058	0.0358
0.75	126.0	0.8358	0.73	0.0593
0.75	234.0	0.5238	0.632	0.0439
0.75	246.0	-0.3219	0.5953	0.0359
0.85	66.0	-0.7109	0.5608	0.0528
0.85	90.0	0.3532	0.5253	0.037
0.85	102.0	0.4008	0.6229	0.0387
0.85	114.0	0.4459	0.5819	0.0405
0.85	126.0	0.562	0.5393	0.0456
0.85	222.0	-0.0446	0.6316	0.0301
0.85	234.0	-0.66	0.5116	0.0503
0.85	246.0	-0.4182	0.4935	0.0394
0.85	258.0	0.6361	0.6884	0.0491
0.85	270.0	-0.344	0.5006	0.0366
0.85	282.0	-0.0931	0.5047	0.0305
0.85	294.0	-0.4585	0.4502	0.0411
0.95	138.0	0.0205	0.6648	0.03
0.95	270.0	1.1097	0.5913	0.0742
0.95	282.0	-0.0969	0.513	0.0306
0.95	294.0	2.039	2.039	0.1283

CLAS Physics Database