CLAS Physics Database

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Measurement E151M2619

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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 :	1445 GeV
ε :	0.622
E_beam :	1.0539 GeV
ε_L:	0.0583

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	-0.421	0.1918	0.0312
0.25	54	-0.4494	0.2344	0.0313
0.35	42	-0.0114	0.2042	0.03
0.35	54	0.1586	0.1714	0.0302
0.45	30	-0.2629	0.2521	0.0305
0.45	42	0.1937	0.2098	0.0302
0.45	54	-0.0691	0.1726	0.03
0.45	66	-0.0908	0.2688	0.0301
0.45	234	0.2752	0.2222	0.0305
0.45	246	0.0777	0.1908	0.03
0.45	258	-0.4153	0.1925	0.0311
0.55	42	-0.022	0.2084	0.03
0.55	54	0.4547	0.199	0.0313
0.55	150	0.0532	0.2609	0.03
0.55	162	-0.2117	0.2252	0.0303
0.55	234	0.2297	0.1813	0.0303
0.55	246	0.1444	0.1604	0.0301
0.55	258	-0.5191	0.16	0.0317
0.65	150	-0.003	0.2228	0.03
0.65	162	0.2157	0.2033	0.0303
0.65	174	-0.5475	0.1902	0.0319
0.65	186	-0.2424	0.2447	0.0304
0.65	210	-0.2256	0.237	0.0303
0.65	222	-0.1114	0.1783	0.0301
0.65	234	-0.0408	0.1727	0.03
0.65	246	0.0664	0.1657	0.03
0.65	258	0.0627	0.1622	0.03
0.75	138	-0.1731	0.2191	0.0302
0.75	150	0.1014	0.2255	0.0301
0.75	162	-0.1395	0.2211	0.0301
0.75	174	0.0503	0.2469	0.03
0.75	198	-0.0753	0.2636	0.03
0.75	222	-0.0507	0.1823	0.03
0.75	234	0.1401	0.1741	0.0301
0.75	246	0.1436	0.1487	0.0301
0.75	258	-0.0511	0.1557	0.03
0.75	270	-0.5598	0.1721	0.032
0.85	162	0.1484	0.239	0.0301
0.85	222	-0.1121	0.1865	0.0301
0.85	234	-0.2159	0.2114	0.0303
0.85	246	0.0977	0.1772	0.0301
0.85	258	0.2226	0.1513	0.0303
0.85	270	-0.3129	0.1881	0.0306
0.95	246	-0.0313	0.2557	0.03