CLAS Physics Database

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Measurement E151M2516

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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 :	1295 GeV
ε :	0.8393
E_beam :	1.0539 GeV
ε_L:	0.1748

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	0.389	0.2118	0.031
0.25	54	0.0005	0.2554	0.03
0.35	30	-0.1949	0.2192	0.0303
0.35	42	-0.2392	0.2145	0.0304
0.45	30	-0.2008	0.2579	0.0303
0.45	42	0.3663	0.1906	0.0309
0.45	270	-0.3924	0.1963	0.031
0.55	246	0.1519	0.16	0.0302
0.55	258	0.1496	0.1549	0.0301
0.55	270	-0.1749	0.1561	0.0302
0.55	282	-0.4515	0.2385	0.0313
0.65	138	0.1842	0.2305	0.0302
0.65	150	0.4116	0.2291	0.0311
0.65	222	0.0419	0.2428	0.03
0.65	234	0.1776	0.1729	0.0302
0.65	246	-0.1699	0.1519	0.0302
0.65	258	0.1508	0.1336	0.0302
0.65	270	-0.0404	0.1422	0.03
0.65	282	0.1077	0.1904	0.0301
0.75	126	-0.4123	0.2286	0.0311
0.75	138	0.2083	0.1892	0.0303
0.75	150	0.0379	0.1796	0.03
0.75	162	-0.2655	0.1576	0.0305
0.75	174	0.1802	0.1816	0.0302
0.75	186	0.402	0.1873	0.0311
0.75	198	0.1002	0.2519	0.0301
0.75	210	-0.3176	0.2319	0.0307
0.75	222	0.1141	0.217	0.0301
0.75	234	-0.165	0.1817	0.0302
0.75	246	0.0788	0.1399	0.03
0.75	258	0.0312	0.1261	0.03
0.75	270	-0.1749	0.1436	0.0302
0.75	282	-0.24	0.1678	0.0304
0.85	126	0.0297	0.2465	0.03
0.85	138	-0.0739	0.1945	0.03
0.85	150	0.2729	0.1537	0.0305
0.85	162	0.2097	0.194	0.0303
0.85	174	-0.1677	0.1733	0.0302
0.85	186	0.286	0.1987	0.0305
0.85	198	0.3278	0.214	0.0307
0.85	222	-0.3267	0.2124	0.0307
0.85	234	0.2564	0.1621	0.0304
0.85	246	-0.0399	0.1434	0.03
0.85	258	-0.1234	0.1349	0.0301
0.85	270	-0.2504	0.1368	0.0304
0.85	282	0.1267	0.2028	0.0301
0.95	114	0.2283	0.2344	0.0303
0.95	138	-0.0273	0.2338	0.03
0.95	150	0.0055	0.2343	0.03
0.95	162	0.1847	0.2582	0.0302
0.95	186	0.2483	0.2303	0.0304
0.95	246	-0.0171	0.2236	0.03