Measurement E151M1391

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:	0.0223
Q²:	0.0143 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.6575

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	0.6297	0.8137
0.25	54.0	1.4538	0.7932
0.35	30.0	-0.0587	0.8779
0.35	42.0	1.0435	0.6666
0.35	54.0	-0.0449	0.55
0.35	66.0	-0.2	0.936
0.45	30.0	-2.0305	0.7761
0.45	42.0	-0.4426	0.6142
0.45	54.0	-0.8692	0.5583
0.45	66.0	-0.6583	0.7101
0.45	222.0	-0.1585	0.8542
0.45	234.0	-2.565	2.565
0.45	246.0	0.3947	0.8613
0.55	30.0	0.5403	0.8105
0.55	42.0	-0.1421	0.7385
0.55	54.0	-1.3479	0.515
0.55	66.0	1.6205	0.7387
0.55	150.0	-1.2538	0.81
0.55	174.0	-0.6882	0.8919
0.55	222.0	-0.8996	0.7307
0.55	234.0	-1.4723	0.5666
0.55	246.0	0.2718	0.5837
0.55	258.0	0.7841	0.6999
0.65	54.0	-0.203	0.9592
0.65	150.0	-1.4115	0.6512
0.65	162.0	-0.5918	0.7349
0.65	174.0	-1.4054	0.7629
0.65	210.0	-1.5651	0.7906
0.65	222.0	0.2447	0.5967
0.65	234.0	-0.0483	0.605
0.65	246.0	0.1464	0.5738
0.65	258.0	-1.1238	0.7504
0.75	30.0	-0.5696	0.8156
0.75	138.0	0.2626	0.7689
0.75	150.0	-0.3854	0.8988
0.75	162.0	-0.6308	0.8532
0.75	222.0	-0.1531	0.6141
0.75	234.0	-0.2777	0.5606
0.75	246.0	-0.1813	0.5455
0.75	258.0	-0.7192	0.6554
0.85	210.0	0.207	0.7466
0.85	222.0	-0.7328	0.59
0.85	234.0	0.1373	0.4939
0.85	246.0	0.6044	0.502
0.85	258.0	-0.1825	0.6519
0.95	246.0	-0.2783	0.664

CLAS Physics Database