Measurement E151M1413

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:	0.0338
Q²:	0.0291 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5771

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	1.0459	0.7323
0.25	54.0	-0.2629	0.7171
0.35	42.0	-1.1803	0.7348
0.35	54.0	0.7631	0.6461
0.35	66.0	0.0946	0.8341
0.45	30.0	-0.371	0.8528
0.45	42.0	0.8428	0.7802
0.45	54.0	-0.1733	0.7137
0.45	66.0	1.6323	0.6033
0.45	222.0	-0.2977	0.853
0.45	234.0	-0.8181	0.5813
0.45	246.0	0.3972	0.6545
0.55	42.0	0.6652	0.6998
0.55	54.0	0.4313	0.7393
0.55	66.0	0.8859	0.8838
0.55	174.0	-1.687	0.7187
0.55	210.0	0.0466	0.7623
0.55	222.0	0.4593	0.7982
0.55	234.0	-0.1403	0.5904
0.55	246.0	-0.2239	0.6278
0.55	258.0	-0.1849	0.5916
0.65	150.0	-1.1477	0.7389
0.65	162.0	-1.4848	0.868
0.65	174.0	1.5126	0.7696
0.65	186.0	0.0074	0.8181
0.65	222.0	-0.2051	0.7345
0.65	234.0	-1.2729	0.5377
0.65	246.0	-0.2421	0.55
0.65	258.0	0.0236	0.5206
0.75	150.0	-0.4851	0.7955
0.75	162.0	-1.444	0.7742
0.75	174.0	1.0223	0.7971
0.75	186.0	-0.4119	0.8268
0.75	222.0	0.6736	0.6707
0.75	234.0	0.4904	0.5228
0.75	246.0	0.7304	0.5227
0.75	258.0	-0.719	0.5466
0.85	222.0	0.1505	0.7537
0.85	234.0	-1.1503	0.506
0.85	246.0	-0.1121	0.5283
0.85	258.0	-0.5561	0.507
0.85	270.0	-0.1436	0.6973

CLAS Physics Database