CLAS Physics Database

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Measurement E151M2571

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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 :	0.0084 GeV²
W :	1385 GeV
ε :	0.7654
E_beam :	1.0539 GeV
ε_L:	0.0208

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	42	0.2908	0.2122	0.0306
0.35	54	0.1433	0.2368	0.0301
0.45	42	0.3342	0.1863	0.0307
0.45	54	-0.2066	0.1953	0.0303
0.55	30	-0.0305	0.2269	0.03
0.55	42	-0.1137	0.1689	0.0301
0.55	54	0.0973	0.1723	0.0301
0.55	162	0.6204	0.2159	0.0325
0.55	222	-0.0442	0.2243	0.03
0.55	234	-0.0778	0.1901	0.03
0.55	246	-0.1574	0.1575	0.0302
0.65	30	-0.1728	0.2515	0.0302
0.65	42	-0.0014	0.2103	0.03
0.65	54	0.0439	0.2208	0.03
0.65	150	-0.0936	0.2317	0.0301
0.65	162	-0.1173	0.255	0.0301
0.65	174	0.018	0.244	0.03
0.65	210	-0.4274	0.2184	0.0312
0.65	222	0.2932	0.2084	0.0306
0.65	234	-0.3462	0.1551	0.0308
0.65	246	0.1244	0.1498	0.0301
0.65	258	0.2253	0.2532	0.0303
0.75	162	0.404	0.2371	0.0311
0.75	210	-0.2299	0.2489	0.0304
0.75	222	-0.0298	0.1821	0.03
0.75	234	-0.2439	0.1668	0.0304
0.75	246	0.0432	0.1895	0.03
0.85	222	0.2803	0.2024	0.0305
0.85	234	-0.2387	0.191	0.0304
0.85	246	0.0941	0.1986	0.0301
0.85	258	0.0124	0.2497	0.03