Measurement E151M1400

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:	0.089
Q²:	0.0707 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.5838

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.15	42.0	-0.7645	0.9258	0.0913
0.25	54.0	-0.3714	0.967	0.0515
0.35	42.0	1.052	0.8085	0.1224
0.45	30.0	1.7532	0.8403	0.2
0.45	42.0	0.3673	0.8419	0.0511
0.45	54.0	-0.0286	0.9004	0.0302
0.45	234.0	-0.2439	0.8548	0.0407
0.45	258.0	-0.26	0.9032	0.042
0.55	222.0	-1.803	0.7077	0.2056
0.55	234.0	0.9241	0.6456	0.1085
0.55	246.0	-0.564	0.6767	0.0703
0.55	258.0	0.312	0.8096	0.0462
0.55	270.0	-0.0141	0.864	0.03
0.65	150.0	1.9749	0.7261	0.2248
0.65	162.0	1.0008	0.8848	0.1168
0.65	222.0	0.5691	0.7838	0.0709
0.65	234.0	0.1348	0.7514	0.0336
0.65	246.0	-1.1364	0.6638	0.1316
0.65	258.0	0.7551	0.6866	0.0903
0.65	270.0	-0.9338	0.8037	0.1095
0.75	138.0	-1.2046	0.7769	0.1391
0.75	174.0	-0.3149	0.8783	0.0465
0.75	222.0	-1.0917	0.7759	0.1267
0.75	234.0	0.0593	0.7329	0.0307
0.75	246.0	-0.6932	0.5535	0.0837
0.75	258.0	-0.2336	0.6518	0.0399
0.75	270.0	0.5668	0.7207	0.0706
0.85	234.0	-0.4942	0.7531	0.0633
0.85	246.0	-0.3378	0.6045	0.0485
0.85	258.0	-0.1622	0.5464	0.0351
0.85	270.0	1.4384	0.5763	0.165
0.95	138.0	1.2328	0.6637	0.1422

CLAS Physics Database