CLAS Physics Database

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Measurement E151M2631

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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 :	0.0143 GeV²
W :	1475 GeV
ε :	0.5972
E_beam :	1.0539 GeV
ε_L:	0.0176

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	0.2101	0.2145	0.0303
0.25	54	0.258	0.2387	0.0304
0.35	42	0.3096	0.169	0.0306
0.35	54	0.138	0.1552	0.0301
0.35	66	-0.2232	0.1997	0.0303
0.45	42	0.1939	0.2401	0.0302
0.45	54	-0.1817	0.1739	0.0302
0.45	66	0.2647	0.191	0.0305
0.45	222	-0.2005	0.2388	0.0303
0.45	234	0.2939	0.2117	0.0306
0.45	246	-0.0851	0.2103	0.03
0.55	42	0.1268	0.2067	0.0301
0.55	54	-0.1199	0.1959	0.0301
0.55	138	-0.2558	0.2573	0.0304
0.55	174	-0.1204	0.2489	0.0301
0.55	222	-0.1329	0.1925	0.0301
0.55	234	-0.281	0.1759	0.0305
0.55	246	-0.0864	0.2245	0.03
0.55	258	0.1743	0.2148	0.0302
0.65	150	-0.0962	0.206	0.0301
0.65	162	0.3874	0.2193	0.031
0.65	174	0.1013	0.2396	0.0301
0.65	186	0.2873	0.2528	0.0305
0.65	210	0.3407	0.1876	0.0308
0.65	222	0.0059	0.1992	0.03
0.65	234	-0.1443	0.1801	0.0301
0.65	246	0.2757	0.2	0.0305
0.65	258	-0.1361	0.2391	0.0301
0.75	162	0.6145	0.2111	0.0324
0.75	174	-0.3252	0.2245	0.0307
0.75	222	-0.1573	0.1824	0.0302
0.75	234	0.1668	0.1803	0.0302
0.75	246	-0.2424	0.1542	0.0304
0.75	258	0.2214	0.2157	0.0303
0.85	222	0.1738	0.2327	0.0302
0.85	234	0.2343	0.1907	0.0304
0.85	246	0.0305	0.2025	0.03
0.85	258	0.2869	0.2324	0.0305