CLAS Physics Database

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Measurement E151M3281

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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 :	0.1435 GeV²
W :	1475 GeV
ε :	0.9013
E_beam :	2.2596 GeV
ε_L:	0.22

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
0.35	66	-0.0964	0.2623	0.0301
0.35	282	0.1709	0.2365	0.0302
0.45	66	0.0519	0.2644	0.03
0.45	282	-0.4859	0.1972	0.0315
0.45	294	0.249	0.2216	0.0304
0.55	102	0.0381	0.2474	0.03
0.55	114	0.5823	0.2116	0.0322
0.55	282	-0.2007	0.2305	0.0303
0.55	306	0.1268	0.2637	0.0301
0.65	102	-0.1269	0.2244	0.0301
0.65	114	0.3834	0.21	0.031
0.65	126	0.4154	0.1998	0.0311
0.65	246	-0.3996	0.2156	0.031
0.65	258	-0.3118	0.2411	0.0306
0.75	102	-0.3771	0.1968	0.0309
0.75	114	0.1836	0.1765	0.0302
0.75	126	-0.1323	0.231	0.0301
0.75	210	0.129	0.2469	0.0301
0.75	222	-0.1266	0.2196	0.0301
0.75	234	-0.0516	0.2452	0.03
0.75	246	-0.292	0.2308	0.0306
0.85	102	-0.304	0.2588	0.0306
0.85	126	0.1959	0.2221	0.0303
0.85	222	0.3077	0.228	0.0306
0.85	234	-0.227	0.2038	0.0303
0.85	246	0.1257	0.1903	0.0301
0.85	258	0.5053	0.171	0.0317
0.95	102	-0.2392	0.2561	0.0304
0.95	234	-0.1771	0.2588	0.0302
0.95	246	0.0904	0.2553	0.0301
0.95	258	-0.0908	0.2328	0.0301
0.95	270	-0.228	0.2204	0.0303
0.25	66	-0.0358	0.263	0.03
0.25	294	0.1771	0.2562	0.0302
0.35	66	-0.025	0.2276	0.03
0.35	78	-0.3483	0.235	0.0308
0.35	282	-0.1653	0.2242	0.0302
0.35	294	0.2204	0.209	0.0303
0.45	78	0.3615	0.248	0.0309
0.45	270	0.0383	0.2511	0.03
0.45	282	0.3127	0.2041	0.0306
0.55	54	-0.2817	0.2504	0.0305
0.55	114	0.1185	0.2204	0.0301
0.55	282	-0.0412	0.2533	0.03
0.65	102	0	0.2234	0.03
0.65	114	0.0337	0.2011	0.03
0.65	126	0.0992	0.2104	0.0301
0.65	222	-0.1536	0.2449	0.0302
0.65	246	0.2533	0.2146	0.0304
0.65	258	0.2867	0.2177	0.0305
0.75	90	0.2801	0.234	0.0305
0.75	102	-0.0081	0.2149	0.03
0.75	114	0.1366	0.2126	0.0301
0.75	126	0.1451	0.2149	0.0301
0.75	138	0.0514	0.2328	0.03
0.75	210	-0.0947	0.2332	0.0301
0.75	222	-0.3638	0.2281	0.0309
0.75	234	0.0101	0.1965	0.03
0.75	246	-0.0446	0.2149	0.03
0.75	258	-0.178	0.2466	0.0302
0.85	78	-0.0806	0.2257	0.03
0.85	90	-0.3652	0.2253	0.0309
0.85	114	-0.1964	0.2368	0.0303
0.85	126	0.1668	0.2228	0.0302
0.85	138	0.1253	0.2514	0.0301
0.85	222	-0.1481	0.2287	0.0301
0.85	234	-0.1859	0.2227	0.0302
0.85	246	-0.2227	0.1844	0.0303
0.85	258	-0.3569	0.1987	0.0308
0.85	270	-0.225	0.2058	0.0303
0.95	222	-0.3518	0.2227	0.0308
0.95	234	-0.51	0.2344	0.0317
0.95	246	-0.1291	0.2268	0.0301
0.95	258	-0.2674	0.2239	0.0305
0.95	270	0.4753	0.1788	0.0315