CLAS Physics Database

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Measurement E151M56

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

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).

No publications available for this experiment

Quantity measured: A_UL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.101 GeV²
W :	1265 GeV
ε :	0.8104
E_beam :	1.0539 GeV
ε_L:	0.4277

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
Plot measurement data

Parameter (X axis): φ(π⁺), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θ_π⁺)	φ(π⁺), degrees	A_UL	Data errors	Systematic errors
0.05	42	0.3829	0.6422	0.0529
0.15	42	1.8524	0.6209	0.2129
0.15	54	-0.2822	0.627	0.0439
0.25	42	0.4142	0.5738	0.0559
0.35	282	0.4734	0.6301	0.0617
0.45	270	-0.4917	0.5082	0.0635
0.45	282	0.5838	0.4427	0.0729
0.45	294	0.4806	0.6127	0.0624
0.55	258	-0.3135	0.4096	0.0466
0.55	270	0.034	0.4302	0.0302
0.55	282	-0.129	0.4394	0.0334
0.55	294	-0.2135	0.5976	0.0386
0.65	246	0.2022	0.4883	0.0378
0.65	258	-0.0441	0.3956	0.0304
0.65	270	-0.3618	0.3649	0.0509
0.65	282	0.5376	0.3928	0.0681
0.65	294	-0.5643	0.4225	0.0709
0.75	126	-0.0258	0.5843	0.0301
0.75	150	0.2915	0.7027	0.0447
0.75	234	-0.0113	0.5318	0.03
0.75	246	-0.0108	0.5139	0.03
0.75	258	0.3389	0.4232	0.0489
0.75	270	0.1358	0.3272	0.0337
0.75	282	-0.1073	0.4418	0.0324
0.75	294	0.046	0.4031	0.0305
0.85	114	1.4992	0.5926	0.1732
0.85	126	0.4482	0.4658	0.0592
0.85	138	-0.3584	0.4073	0.0506
0.85	150	0.6707	0.3957	0.082
0.85	162	0.3955	0.4478	0.0541
0.85	174	-0.0082	0.3848	0.03
0.85	186	-0.3224	0.4477	0.0474
0.85	198	-0.1328	0.4511	0.0336
0.85	246	-0.9668	0.3545	0.114
0.85	258	-0.5298	0.3531	0.0673
0.85	270	0.0121	0.3505	0.03
0.85	282	-0.0389	0.3576	0.0303
0.85	294	-0.4312	0.4742	0.0575
0.95	114	0.0072	0.4544	0.03
0.95	126	0.3237	0.3911	0.0475
0.95	138	0.2118	0.4429	0.0385
0.95	150	0.78	0.4286	0.0937
0.95	162	-0.1077	0.3656	0.0324
0.95	174	-0.3727	0.3443	0.0519
0.95	186	0.2949	0.3865	0.045
0.95	198	-0.6326	0.3387	0.078
0.95	210	0.6002	0.4208	0.0746
0.95	258	0.0286	0.4677	0.0302
0.95	270	0.614	0.4684	0.076