CLAS Physics Database

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Measurement E151M3546

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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 :	0.2445 GeV²
W :	1625 GeV
ε :	0.8921
E_beam :	2.999 GeV
ε_L:	0.1911

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	282	0.3476	0.2432	0.0308
0.35	270	-0.07	0.2747	0.03
0.35	282	-0.1201	0.2407	0.0301
0.45	102	0.4192	0.2316	0.0311
0.45	114	0.2675	0.2483	0.0305
0.45	126	-0.48	0.2189	0.0315
0.45	270	0.2132	0.2292	0.0303
0.45	282	-0.4162	0.2013	0.0311
0.55	90	-0.4724	0.2014	0.0315
0.55	102	0.3243	0.196	0.0307
0.55	114	-0.4656	0.1806	0.0314
0.55	126	-0.0458	0.2404	0.03
0.55	222	0.314	0.2858	0.0307
0.55	270	-0.3308	0.2224	0.0307
0.55	282	0.2957	0.2528	0.0306
0.55	294	-0.2608	0.2673	0.0304
0.55	306	0.1148	0.2948	0.0301
0.65	90	0.0884	0.2339	0.0301
0.65	102	-0.0155	0.1638	0.03
0.65	114	0.385	0.1814	0.031
0.65	126	-0.1845	0.2122	0.0302
0.65	138	0.0474	0.2469	0.03
0.65	198	-0.0684	0.2664	0.03
0.65	210	0.3339	0.2034	0.0307
0.65	222	-0.0042	0.2324	0.03
0.65	234	0.2665	0.2235	0.0305
0.65	246	-0.14	0.2644	0.0301
0.65	294	-0.0278	0.189	0.03
0.65	306	0.1561	0.2218	0.0302
0.75	66	0.3333	0.229	0.0307
0.75	78	0.164	0.2096	0.0302
0.75	90	-0.3853	0.2648	0.031
0.75	102	0.1585	0.1945	0.0302
0.75	114	0.0547	0.1943	0.03
0.75	126	0.0434	0.2021	0.03
0.75	138	0.3506	0.2213	0.0308
0.75	186	-0.2766	0.2455	0.0305
0.75	198	-0.0237	0.2246	0.03
0.75	210	0.2248	0.2153	0.0303
0.75	222	-0.3223	0.1876	0.0307
0.75	234	-0.3119	0.1795	0.0306
0.75	246	0.1096	0.2051	0.0301
0.75	258	0.2341	0.2377	0.0304
0.75	282	0.1891	0.2353	0.0302
0.75	294	-0.0814	0.2368	0.03
0.75	306	0.036	0.2793	0.03
0.85	66	0.0474	0.1651	0.03
0.85	78	0.0183	0.1517	0.03
0.85	90	0.051	0.1826	0.03
0.85	114	-0.3418	0.2084	0.0308
0.85	126	0.253	0.246	0.0304
0.85	138	-0.2678	0.2478	0.0305
0.85	186	-0.2098	0.2459	0.0303
0.85	198	0.2962	0.191	0.0306
0.85	210	0.2143	0.1773	0.0303
0.85	222	0.1462	0.1555	0.0301
0.85	234	-0.0085	0.1609	0.03
0.85	246	0.0104	0.1652	0.03
0.85	258	-0.2758	0.179	0.0305
0.85	270	0.1054	0.1936	0.0301
0.95	78	-0.1558	0.2391	0.0302
0.95	90	0.0177	0.2487	0.03
0.95	162	0.1861	0.2792	0.0302
0.95	174	-0.2189	0.2722	0.0303
0.95	186	0.0804	0.2266	0.03
0.95	198	0.2927	0.2177	0.0306
0.95	210	-0.1351	0.224	0.0301
0.95	222	0.1671	0.1861	0.0302
0.95	234	-0.1084	0.1974	0.0301
0.95	246	0.0234	0.208	0.03
0.95	258	0.0652	0.1838	0.03
0.95	270	0.3348	0.1687	0.0307
0.95	282	-0.0406	0.1772	0.03
0.95	294	-0.0217	0.2067	0.03