CLAS Physics Database

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Measurement E151M2680

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

Q² :	0.0205 GeV²
W :	1265 GeV
ε :	0.9346
E_beam :	1.3383 GeV
ε_L:	0.1231

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LU,
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_LU	Stat. error	Syst. error
0.25	42	-0.5566	0.2451	0.032
0.25	54	0.1716	0.3075	0.0302
0.35	42	0.0836	0.294	0.03
0.35	54	0.0107	0.3417	0.03
0.45	30	-0.3211	0.3343	0.0307
0.45	42	-0.4827	0.2666	0.0315
0.45	258	0.0155	0.3912	0.03
0.45	270	0.5089	0.295	0.0317
0.55	234	-0.8272	0.2268	0.0343
0.55	246	-0.6292	0.2034	0.0325
0.55	258	-0.1413	0.2262	0.0301
0.55	270	0.3428	0.2128	0.0308
0.65	138	-0.8184	0.1765	0.0342
0.65	150	0.272	0.3284	0.0305
0.65	234	-0.2661	0.257	0.0305
0.65	246	0.2418	0.2087	0.0304
0.65	258	0.2349	0.2306	0.0304
0.65	270	0.0411	0.2408	0.03
0.75	126	-0.0272	0.3281	0.03
0.75	138	0.3838	0.2398	0.031
0.75	150	-0.4067	0.2486	0.0311
0.75	162	0.2407	0.2758	0.0304
0.75	174	0.4263	0.3091	0.0312
0.75	186	0.1428	0.3618	0.0301
0.75	210	0.0012	0.3083	0.03
0.75	222	-0.2454	0.2519	0.0304
0.75	234	-0.1466	0.2296	0.0301
0.75	246	-0.2046	0.2116	0.0303
0.75	258	-0.35	0.1852	0.0308
0.75	270	-0.2882	0.243	0.0305
0.75	282	-0.2502	0.357	0.0304
0.85	126	-0.489	0.2693	0.0316
0.85	138	0.2049	0.3029	0.0303
0.85	150	0.0147	0.3324	0.03
0.85	162	-0.3225	0.2404	0.0307
0.85	174	0.2001	0.2901	0.0303
0.85	186	0.1312	0.3239	0.0301
0.85	210	-0.0924	0.3192	0.0301
0.85	222	-0.4154	0.2618	0.0311
0.85	234	-0.4755	0.205	0.0315
0.85	246	0.2095	0.1967	0.0303
0.85	258	-0.1493	0.228	0.0301
0.85	270	0.069	0.2967	0.03
0.15	42	-0.0995	0.248	0.0301
0.25	42	-0.1249	0.2004	0.0301
0.25	54	0.3941	0.2529	0.031
0.35	42	-0.3773	0.2734	0.0309
0.35	54	-0.2145	0.2129	0.0303
0.45	30	-0.1005	0.253	0.0301
0.45	42	-0.0052	0.2746	0.03
0.45	270	-0.0171	0.2397	0.03
0.55	234	-0.3251	0.2722	0.0307
0.55	246	-0.1895	0.2123	0.0302
0.55	258	-0.0236	0.167	0.03
0.55	270	-0.0193	0.1886	0.03
0.65	126	-0.1028	0.2721	0.0301
0.65	150	-0.0923	0.2649	0.0301
0.65	222	0.349	0.1952	0.0308
0.65	234	0.1933	0.1793	0.0302
0.65	246	-0.1015	0.1444	0.0301
0.65	258	0.3356	0.1417	0.0307
0.65	270	-0.0763	0.1421	0.03
0.75	126	-0.2706	0.1904	0.0305
0.75	138	-0.1819	0.1882	0.0302
0.75	150	0.1166	0.1907	0.0301
0.75	162	-0.3314	0.1901	0.0307
0.75	174	-0.2174	0.2777	0.0303
0.75	186	0.0009	0.2421	0.03
0.75	210	0.4555	0.2511	0.0314
0.75	222	-0.1579	0.2089	0.0302
0.75	234	-0.1668	0.1665	0.0302
0.75	246	-0.0775	0.1341	0.03
0.75	258	-0.1642	0.1438	0.0302
0.75	270	-0.1167	0.1505	0.0301
0.75	282	-0.4154	0.2252	0.0311
0.85	126	-0.17	0.2505	0.0302
0.85	138	-0.0653	0.2279	0.03
0.85	150	-0.0374	0.2033	0.03
0.85	162	0.0305	0.1863	0.03
0.85	174	-0.1676	0.267	0.0302
0.85	186	-0.2833	0.2605	0.0305
0.85	210	-0.1736	0.251	0.0302
0.85	222	-0.0223	0.2012	0.03
0.85	234	-0.2515	0.1933	0.0304
0.85	246	-0.3647	0.1396	0.0309
0.85	258	-0.0864	0.1526	0.03
0.85	270	0.1479	0.209	0.0301