Measurement E151M2172

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:	0.8855
Q²:	0.1715 GeV²
W:	1235.0 GeV
E_beam:	2.999 GeV
ε:	0.977

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	0.7102	0.5096
0.35	66.0	-0.6933	0.4698
0.35	78.0	0.1119	0.6602
0.35	294.0	0.6655	0.6668
0.45	66.0	0.1789	0.5257
0.45	78.0	-0.9253	0.5138
0.45	282.0	1.0293	0.4522
0.45	294.0	0.2309	0.5501
0.55	78.0	0.3818	0.6737
0.55	270.0	0.2669	0.5357
0.55	282.0	-0.5236	0.385
0.55	294.0	-0.7907	0.5313
0.65	78.0	-0.9225	0.6474
0.65	90.0	0.2462	0.7062
0.65	270.0	0.4147	0.3983
0.65	282.0	0.2249	0.3592
0.65	294.0	-0.7241	0.4371
0.75	66.0	-0.135	0.7408
0.75	78.0	1.109	0.4312
0.75	90.0	-0.3788	0.4664
0.75	102.0	-0.6261	0.5215
0.75	258.0	0.4097	0.4539
0.75	270.0	0.2876	0.3963
0.75	282.0	0.0923	0.3513
0.75	294.0	-0.5738	0.366
0.85	66.0	0.1692	0.5107
0.85	78.0	0.279	0.3974
0.85	90.0	0.0547	0.3562
0.85	102.0	-0.0584	0.3621
0.85	114.0	-0.6013	0.4395
0.85	126.0	1.0239	0.8057
0.85	234.0	1.6509	0.6463
0.85	246.0	-0.2559	0.5296
0.85	258.0	-0.3097	0.429
0.85	270.0	0.1608	0.364
0.85	282.0	-0.5954	0.3918
0.85	294.0	-0.356	0.4381
0.95	42.0	0.9994	0.6466
0.95	54.0	-0.0534	0.5078
0.95	66.0	-0.2673	0.4076
0.95	78.0	0.314	0.3971
0.95	90.0	-0.7465	0.4011
0.95	102.0	-0.4324	0.4153
0.95	114.0	0.1138	0.3786
0.95	126.0	-0.5772	0.4535
0.95	138.0	-0.5961	0.4641
0.95	150.0	0.5589	0.4976
0.95	162.0	0.8009	0.5993
0.95	174.0	0.2792	0.5706
0.95	198.0	-0.8814	0.6376
0.95	210.0	0.9398	0.5699
0.95	222.0	-0.0963	0.7157
0.95	234.0	0.1743	0.6658
0.95	246.0	0.8219	0.4693
0.95	258.0	0.4006	0.5134
0.95	270.0	-0.2062	0.446
0.95	282.0	0.5212	0.5126
0.95	306.0	-0.063	0.6882

CLAS Physics Database