Measurement E151M1287

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:	0.0564
Q²:	0.0121 GeV²
W:	1295.0 GeV
E_beam:	1.0539 GeV
ε:	0.8686

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-0.4222	0.7907
0.35	42.0	-0.838	0.6217
0.35	54.0	-0.2128	0.6953
0.35	66.0	2.8331	2.8331
0.45	42.0	0.6139	0.6796
0.45	258.0	0.8544	0.6667
0.55	30.0	1.396	0.6506
0.55	42.0	-0.0162	0.5913
0.55	54.0	1.3195	0.7649
0.55	222.0	0.6151	0.7194
0.55	234.0	-0.5482	0.5876
0.55	246.0	0.1915	0.4572
0.55	258.0	-0.6	0.4801
0.55	270.0	0.9929	0.5918
0.65	138.0	-0.7023	0.8356
0.65	150.0	0.6571	0.6721
0.65	162.0	0.0871	0.7028
0.65	174.0	-0.9035	0.7811
0.65	186.0	-1.1135	0.8502
0.65	198.0	1.5977	0.707
0.65	210.0	0.4842	0.6854
0.65	222.0	1.0029	0.5547
0.65	234.0	0.4266	0.4322
0.65	246.0	-0.1184	0.3721
0.65	258.0	-0.1136	0.4398
0.65	270.0	-1.0148	0.4745
0.75	138.0	1.1257	0.7159
0.75	150.0	-0.7305	0.5951
0.75	162.0	0.7234	0.5815
0.75	174.0	0.4075	0.606
0.75	186.0	1.1375	0.6745
0.75	210.0	0.1993	0.6643
0.75	222.0	-0.1307	0.5103
0.75	234.0	-0.0651	0.4421
0.75	246.0	0.8048	0.3866
0.75	258.0	0.365	0.4235
0.75	270.0	-0.4003	0.5462
0.85	162.0	-0.2381	0.7459
0.85	210.0	0.9865	0.6688
0.85	222.0	-0.1674	0.6311
0.85	234.0	-0.116	0.4106
0.85	246.0	0.2309	0.4232
0.85	258.0	-0.0436	0.4334
0.85	270.0	0.2524	0.6176

CLAS Physics Database