Measurement E151M1372

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:	0.0278
Q²:	0.0143 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.7112

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-0.6724	0.9618
0.25	54.0	-1.3175	0.9128
0.35	30.0	-0.3455	0.9264
0.35	42.0	1.0893	0.6956
0.35	54.0	0.3965	0.6462
0.35	66.0	0.1579	0.8616
0.45	18.0	0.3274	0.9462
0.45	30.0	1.3139	0.7303
0.45	42.0	0.44	0.6207
0.45	54.0	-0.6561	0.5531
0.45	66.0	-1.0606	0.886
0.45	210.0	-0.9835	0.8153
0.45	222.0	0.0204	0.8928
0.45	234.0	-0.558	0.7027
0.45	246.0	-0.654	0.8652
0.55	30.0	-2.6839	2.6839
0.55	42.0	-0.0572	0.6179
0.55	54.0	1.1126	0.5391
0.55	138.0	-0.2593	0.7672
0.55	150.0	-0.6548	0.7402
0.55	162.0	0.8066	0.7926
0.55	174.0	-0.5675	0.8382
0.55	222.0	-0.8651	0.6217
0.55	234.0	-0.6745	0.5897
0.55	246.0	0.1676	0.688
0.55	258.0	-0.6016	0.884
0.65	54.0	0.4166	0.7925
0.65	138.0	-0.7702	0.8517
0.65	150.0	-1.8686	0.724
0.65	162.0	-0.1895	0.8467
0.65	174.0	-0.1927	0.7505
0.65	210.0	0.6469	0.937
0.65	222.0	-0.9882	0.6184
0.65	234.0	0.0636	0.4844
0.65	246.0	0.7786	0.463
0.65	258.0	0.0503	0.6661
0.75	150.0	-1.5345	0.8179
0.75	162.0	-0.4453	0.7467
0.75	210.0	-0.1916	0.9339
0.75	222.0	-1.178	0.6034
0.75	234.0	0.6791	0.5885
0.75	246.0	-1.312	0.4916
0.75	258.0	-0.4811	0.6675
0.85	222.0	1.4385	0.6681
0.85	234.0	0.0908	0.554
0.85	246.0	-0.2015	0.532
0.85	258.0	0.4898	0.6841
0.95	234.0	0.7484	0.6866

CLAS Physics Database