CLAS Physics Database

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Measurement E151M2952

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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 :	0.1205 GeV²
W :	1295 GeV
ε :	0.9427
E_beam :	1.9889 GeV
ε_L:	0.4756

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
0.15	306	-0.3743	0.2216	0.0309
0.25	66	0.2279	0.1998	0.0303
0.25	78	0.3112	0.229	0.0306
0.25	294	0.1954	0.2566	0.0303
0.25	306	-0.1344	0.2258	0.0301
0.35	66	0.0259	0.1817	0.03
0.35	78	-0.0899	0.1898	0.0301
0.35	294	0.0875	0.2368	0.0301
0.35	306	-0.0311	0.2829	0.03
0.45	66	0.0758	0.2085	0.03
0.45	78	-0.0601	0.1832	0.03
0.45	294	0.2016	0.2567	0.0303
0.55	66	0.5927	0.2008	0.0323
0.55	78	-0.4394	0.2044	0.0313
0.55	270	-0.4764	0.1951	0.0315
0.55	282	-0.037	0.2397	0.03
0.55	294	-0.4345	0.2552	0.0312
0.65	78	-0.0351	0.2512	0.03
0.65	90	0.4687	0.2298	0.0314
0.65	102	-0.3754	0.2583	0.0309
0.65	114	0.1799	0.2468	0.0302
0.65	246	-0.0589	0.2819	0.03
0.65	258	-0.1901	0.1841	0.0302
0.65	270	-0.1417	0.1515	0.0301
0.65	282	-0.1663	0.1963	0.0302
0.75	90	-0.1052	0.1901	0.0301
0.75	102	0.2203	0.1826	0.0303
0.75	114	0.0728	0.186	0.03
0.75	126	-0.1116	0.2481	0.0301
0.75	234	-0.2614	0.2303	0.0305
0.75	246	-0.1737	0.188	0.0302
0.75	258	0.1438	0.1738	0.0301
0.75	270	-0.2849	0.1616	0.0305
0.75	282	-0.1285	0.1645	0.0301
0.75	294	0.0156	0.2387	0.03
0.85	90	-0.4525	0.1737	0.0313
0.85	102	-0.0905	0.1668	0.0301
0.85	114	0.2227	0.1615	0.0303
0.85	126	-0.056	0.1818	0.03
0.85	138	0.1446	0.1906	0.0301
0.85	150	0.0454	0.2004	0.03
0.85	162	-0.1647	0.2635	0.0302
0.85	222	0.2092	0.2347	0.0303
0.85	234	-0.2763	0.1936	0.0305
0.85	246	-0.1317	0.1649	0.0301
0.85	258	0.0218	0.1607	0.03
0.85	270	-0.3215	0.1703	0.0307
0.85	282	0.0067	0.1549	0.03
0.95	90	-0.2421	0.2532	0.0304
0.95	102	0.1707	0.1861	0.0302
0.95	114	0.2106	0.1558	0.0303
0.95	126	-0.0592	0.1811	0.03
0.95	138	-0.1697	0.2274	0.0302
0.95	150	0.034	0.2071	0.03
0.95	162	-0.2368	0.2051	0.0304
0.95	174	0.0027	0.2307	0.03
0.95	222	-0.1917	0.2406	0.0302
0.95	234	0.034	0.2343	0.03
0.95	246	0.1379	0.1964	0.0301
0.95	258	0.1465	0.2098	0.0301
0.95	270	-0.0993	0.1929	0.0301
0.95	282	0.1973	0.2141	0.0303