CLAS Physics Database

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Measurement E151M2858

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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 :	0.0707 GeV²
W :	1535 GeV
ε :	0.6413
E_beam :	1.3383 GeV
ε_L:	0.0668

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
0.55	138	0.6721	0.2181	0.0329
0.55	210	0.1715	0.4284	0.0302
0.55	222	0.0274	0.2057	0.0301
0.55	234	-0.2722	0.2041	0.0305
0.55	246	0.1372	0.1976	0.0303
0.65	138	0.3121	0.1819	0.0307
0.65	150	0.0106	0.1881	0.0302
0.65	162	0.3875	0.23	0.031
0.65	210	-0.5403	0.2417	0.0319
0.65	222	-0.0333	0.1787	0.0302
0.65	234	-0.1958	0.1671	0.0303
0.65	246	0.2868	0.1824	0.0308
0.75	138	0.1722	0.2235	0.0302
0.75	150	-0.3909	0.2546	0.031
0.75	162	-0.0048	0.2739	0.03
0.75	222	0.1436	0.2052	0.0311
0.75	234	-0.4993	0.1408	0.0333
0.75	246	0.1093	0.1839	0.0301
0.85	222	-0.353	0.2565	0.0308
0.85	234	0.6612	0.2108	0.0328
0.85	246	-0.2747	0.2501	0.0305
0.95	114	0.5919	0.2559	0.0323
0.95	126	-0.1692	0.275	0.0302
0.95	234	-0.4899	0.2624	0.0316
0.75	258	0.2359	0.3331	0.0304
0.85	222	0.2174	0.4005	0.0303
0.85	234	-0.3101	0.2617	0.0306
0.85	246	0.2433	0.2952	0.0304
0.85	258	-0.0078	0.4175	0.03