CLAS Physics Database

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Measurement E151M2931

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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 :	0.0415 GeV²
W :	1265 GeV
ε :	0.9682
E_beam :	1.9889 GeV
ε_L:	0.2444

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	306	-0.0572	0.2528	0.03
0.35	78	0.3316	0.1818	0.0307
0.35	294	-0.2239	0.2655	0.0303
0.35	306	-0.1292	0.2555	0.0301
0.45	66	-0.0335	0.2327	0.03
0.45	78	0.0287	0.1574	0.03
0.45	90	-0.0201	0.193	0.03
0.45	294	0.1278	0.2471	0.0301
0.55	78	0.052	0.1611	0.03
0.55	90	-0.0101	0.1554	0.03
0.55	102	-0.0746	0.2558	0.03
0.55	258	0.3498	0.2374	0.0308
0.55	270	0.1134	0.1951	0.0301
0.55	282	0.3624	0.2602	0.0309
0.65	78	-0.4408	0.2256	0.0313
0.65	90	0.265	0.163	0.0305
0.65	102	0.2282	0.2481	0.0303
0.65	246	-0.1819	0.175	0.0302
0.65	258	0.1842	0.1625	0.0302
0.65	270	0.1346	0.1514	0.0301
0.75	102	-0.1028	0.2763	0.0301
0.75	114	-0.191	0.2228	0.0302
0.75	126	-0.3256	0.2196	0.0307
0.75	138	-0.0329	0.2506	0.03
0.75	150	0.4814	0.197	0.0315
0.75	222	0.2336	0.2453	0.0304
0.75	234	-0.0749	0.1819	0.03
0.75	246	0.1286	0.1595	0.0301
0.75	258	-0.0015	0.1529	0.03
0.75	270	0.288	0.1836	0.0305
0.85	114	0.5532	0.1912	0.032
0.85	126	0.1736	0.203	0.0302
0.85	138	-0.1879	0.1672	0.0302
0.85	150	-0.2769	0.1581	0.0305
0.85	162	0.1374	0.2047	0.0301
0.85	174	0.0142	0.1975	0.03
0.85	186	0.237	0.246	0.0304
0.85	222	0.3205	0.2192	0.0307
0.85	234	-0.0384	0.1981	0.03
0.85	246	0.2001	0.1745	0.0303
0.85	258	0.0658	0.1703	0.03
0.95	138	0.4355	0.2237	0.0312
0.95	150	-0.2472	0.2504	0.0304
0.95	162	-0.125	0.2566	0.0301