Measurement E151M1426

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:	0.3688
Q²:	0.0415 GeV²
W:	1205.0 GeV
E_beam:	1.3383 GeV
ε:	0.9477

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	270.0	0.3886	0.6162	0.038
0.55	282.0	-0.2659	0.4191	0.034
0.65	258.0	-0.3185	0.4892	0.0356
0.65	270.0	-0.4052	0.4556	0.0386
0.65	282.0	-0.8046	0.4468	0.0568
0.75	258.0	0.617	0.4006	0.0476
0.75	270.0	0.4136	0.5082	0.0389
0.75	282.0	-0.3583	0.6119	0.0369
0.85	138.0	-0.1805	0.4928	0.0319
0.85	150.0	-0.1967	0.4467	0.0322
0.85	162.0	0.2442	0.4659	0.0334
0.85	174.0	-0.4201	0.386	0.0392
0.85	186.0	0.3397	0.5505	0.0363
0.85	198.0	0.9397	0.5017	0.0638
0.85	210.0	-0.1544	0.5408	0.0314
0.95	138.0	0.7592	0.5076	0.0545
0.95	174.0	-0.0294	0.4928	0.0301
0.45	282.0	-0.408	0.6995	0.0382
0.55	258.0	-0.1968	0.7505	0.0321
0.55	270.0	0.1301	0.6212	0.0309
0.55	282.0	-0.1784	0.7163	0.0317
0.65	246.0	-1.3857	0.4129	0.086
0.65	258.0	-0.2226	0.6359	0.0327
0.65	270.0	-0.0034	0.4952	0.03
0.65	282.0	-0.3939	0.575	0.0377
0.75	246.0	0.6638	0.5907	0.0489
0.75	258.0	-0.5728	0.4527	0.0448
0.75	270.0	0.6712	0.4553	0.0492
0.85	138.0	0.3557	0.6635	0.0364
0.85	150.0	0.4809	0.5866	0.041
0.85	162.0	0.3067	0.7056	0.0349
0.85	174.0	-0.8705	0.4665	0.0588
0.85	186.0	-0.139	0.7132	0.0311
0.85	198.0	0.0751	0.6462	0.0303
0.85	210.0	0.6361	0.6284	0.0476
0.85	222.0	0.4496	0.6344	0.0398
0.85	234.0	-0.6461	0.6716	0.0481
0.85	246.0	-0.2902	0.7103	0.0344
0.95	150.0	1.4724	1.4724	0.0907
0.95	162.0	0.1574	0.7583	0.0314
0.95	174.0	0.0222	0.5673	0.03
0.95	186.0	-0.9448	0.555	0.0626

CLAS Physics Database