CLAS Physics Database

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Measurement E151M133

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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 :	0.0245 GeV²
W :	1385 GeV
ε :	0.7466
E_beam :	1.0539 GeV
ε_L:	0.057

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
0.25	42	1.3219	0.7767	0.1534
0.25	54	1.5302	0.8147	0.1767
0.35	42	-0.8355	0.5204	0.0997
0.35	54	-0.0011	0.6099	0.03
0.45	18	0.8023	0.8209	0.0961
0.45	30	0.6396	0.6185	0.0787
0.45	42	0.0919	0.4798	0.0318
0.45	54	0.1276	0.64	0.0333
0.45	234	-0.1974	0.7351	0.0375
0.45	246	-0.0994	0.7064	0.0321
0.55	30	0.024	0.6466	0.0301
0.55	42	0.5949	0.5487	0.074
0.55	54	0.5437	0.6284	0.0687
0.55	138	1.5569	1.0321	0.1797
0.55	150	0.3853	0.8333	0.0531
0.55	162	-0.1479	0.8509	0.0344
0.55	222	0.0458	0.6451	0.0304
0.55	234	-0.3157	0.5289	0.0468
0.55	246	-0.4118	0.5034	0.0556
0.55	258	0.6687	0.5873	0.0818
0.55	270	0.6819	0.8895	0.0832
0.65	138	0.068	0.7069	0.031
0.65	150	-0.2809	0.5646	0.0438
0.65	162	-0.4217	0.711	0.0566
0.65	174	-0.0206	0.791	0.0301
0.65	210	0.814	0.8218	0.0973
0.65	222	1.0311	0.5441	0.1211
0.65	234	0.2631	0.5198	0.0424
0.65	246	0.6591	0.4354	0.0808
0.65	258	0.2919	0.4627	0.0447
0.65	270	-0.406	0.7014	0.0551
0.75	138	0.1131	0.6793	0.0326
0.75	150	-0.2189	0.6626	0.039
0.75	162	0.5389	0.7538	0.0683
0.75	210	1.3681	0.8766	0.1585
0.75	222	-0.1683	0.6112	0.0356
0.75	234	0.0566	0.4809	0.0307
0.75	246	-0.0419	0.442	0.0304
0.75	258	-0.2551	0.4181	0.0417
0.75	270	0.0986	0.6726	0.032
0.85	150	-0.0387	0.8002	0.0303
0.85	222	-0.0396	0.4938	0.0303
0.85	234	-0.0256	0.4546	0.0301
0.85	246	-0.42	0.3953	0.0564
0.85	258	0.9714	0.5035	0.1145
0.85	270	0.1592	0.6484	0.035
0.95	246	0.0239	0.5151	0.0301