CLAS Physics Database

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Measurement E151M2612

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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 :	0.0121 GeV²
W :	1445 GeV
ε :	0.6605
E_beam :	1.0539 GeV
ε_L:	0.0188

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	54	-0.5242	0.2231	0.0318
0.35	30	-0.1395	0.243	0.0301
0.35	42	-0.1187	0.1607	0.0301
0.35	54	0.2408	0.1674	0.0304
0.45	30	0.3437	0.1934	0.0308
0.45	42	-0.0868	0.175	0.0301
0.45	54	-0.0626	0.1474	0.03
0.45	66	0.2889	0.2216	0.0306
0.45	222	-0.2013	0.2009	0.0303
0.45	234	-0.0138	0.1971	0.03
0.45	246	0.575	0.1817	0.0321
0.55	30	0.1276	0.1902	0.0301
0.55	42	0.3903	0.1788	0.031
0.55	54	-0.1563	0.1673	0.0302
0.55	66	0.1062	0.2581	0.0301
0.55	138	0.0267	0.2512	0.03
0.55	150	0.0112	0.2504	0.03
0.55	162	0.1728	0.2421	0.0302
0.55	186	-0.3071	0.2529	0.0306
0.55	210	-0.1833	0.2463	0.0302
0.55	222	-0.3815	0.186	0.031
0.55	234	-0.2685	0.1651	0.0305
0.55	246	0.2628	0.1663	0.0305
0.65	54	0.2761	0.2217	0.0305
0.65	150	-0.2367	0.2289	0.0304
0.65	162	-0.3225	0.2363	0.0307
0.65	174	0.3151	0.2529	0.0307
0.65	186	0.1486	0.2549	0.0301
0.65	210	-0.259	0.2164	0.0304
0.65	222	-0.105	0.1729	0.0301
0.65	234	-0.0033	0.162	0.03
0.65	246	0.0776	0.1538	0.03
0.65	258	-0.168	0.2086	0.0302
0.75	162	0.5946	0.2195	0.0323
0.75	174	-0.1526	0.2247	0.0302
0.75	210	0.0012	0.2217	0.03
0.75	222	0.2467	0.1822	0.0304
0.75	234	0.2456	0.1974	0.0304
0.75	246	0.0415	0.1691	0.03
0.75	258	0.1737	0.2272	0.0302
0.85	210	-0.3365	0.2363	0.0307
0.85	222	0.1883	0.192	0.0302
0.85	234	0.1962	0.1935	0.0303
0.85	246	0.2302	0.2071	0.0304
0.85	258	0.3566	0.1978	0.0308