Measurement E151M1358

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:	0.0912
Q²:	0.0415 GeV²
W:	1385.0 GeV
E_beam:	1.0539 GeV
ε:	0.7263

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-0.5399	0.7769
0.25	54.0	-0.9177	0.9533
0.35	30.0	0.1968	0.9004
0.35	42.0	-0.5807	0.7033
0.35	54.0	0.1115	0.8607
0.45	30.0	0.1292	0.8044
0.45	42.0	0.6701	0.6343
0.45	54.0	-0.2499	0.9007
0.55	54.0	0.4232	0.986
0.55	234.0	0.1904	0.7523
0.55	246.0	1.0072	0.6234
0.55	258.0	0.0596	0.5926
0.55	270.0	-0.5799	0.7815
0.65	138.0	-1.5493	0.957
0.65	150.0	-0.2704	0.8771
0.65	162.0	0.6235	0.894
0.65	222.0	-0.1934	0.6786
0.65	234.0	-1.7085	0.5047
0.65	246.0	-0.1446	0.5067
0.65	258.0	0.4721	0.5327
0.65	270.0	-0.4495	0.7121
0.75	138.0	0.2136	0.8601
0.75	150.0	0.291	0.6908
0.75	162.0	0.8552	0.9201
0.75	174.0	0.512	0.8537
0.75	186.0	-1.1383	0.9192
0.75	222.0	-0.6779	0.7255
0.75	234.0	-1.115	0.5415
0.75	246.0	0.8356	0.5686
0.75	258.0	1.5411	0.4749
0.75	270.0	0.4789	0.6861
0.85	126.0	1.1361	0.8966
0.85	150.0	-0.9312	0.7944
0.85	162.0	1.9879	0.696
0.85	174.0	0.4557	0.8636
0.85	222.0	0.526	0.683
0.85	234.0	-0.3315	0.5856
0.85	246.0	-0.4369	0.5348
0.85	258.0	-0.6356	0.4801
0.85	270.0	0.1153	0.5763
0.95	246.0	0.9338	0.6801
0.95	258.0	0.5336	0.6725

CLAS Physics Database