CLAS Physics Database

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Measurement E151M2937

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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 :	0.1205 GeV²
W :	1265 GeV
ε :	0.9498
E_beam :	1.9889 GeV
ε_L:	0.5708

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	66	-0.1731	0.1878	0.0302
0.25	78	0.3417	0.2509	0.0308
0.35	66	-0.0147	0.1761	0.03
0.35	78	0.2304	0.2232	0.0304
0.45	66	0.1692	0.2028	0.0302
0.45	78	-0.0029	0.1848	0.03
0.45	282	-0.0869	0.2731	0.0301
0.45	294	0.5114	0.2748	0.0317
0.55	66	0.0212	0.2604	0.03
0.55	78	0.0203	0.1973	0.03
0.55	270	0.2154	0.207	0.0303
0.55	282	-0.0102	0.193	0.03
0.55	294	0.316	0.2542	0.0307
0.65	258	0.6239	0.1472	0.0325
0.65	270	0.0328	0.158	0.03
0.65	282	-0.1257	0.2106	0.0301
0.75	90	-0.033	0.271	0.03
0.75	102	0.1057	0.2088	0.0301
0.75	114	0.0132	0.1946	0.03
0.75	126	0.1305	0.2544	0.0301
0.75	246	-0.3507	0.2178	0.0308
0.75	258	-0.0695	0.2028	0.03
0.75	270	-0.1157	0.1706	0.0301
0.75	282	-0.077	0.1804	0.03
0.85	90	-0.09	0.2107	0.0301
0.85	102	-0.0003	0.1561	0.03
0.85	114	0.0941	0.161	0.0301
0.85	126	-0.0288	0.1597	0.03
0.85	138	-0.2171	0.1833	0.0303
0.85	234	0.5453	0.2422	0.0319
0.85	246	0.0289	0.2151	0.03
0.85	258	-0.0748	0.1724	0.03
0.85	270	0.1188	0.1536	0.0301
0.85	282	-0.2579	0.1728	0.0304
0.95	90	0.122	0.2159	0.0301
0.95	102	-0.1647	0.1907	0.0302
0.95	114	-0.0126	0.1717	0.03
0.95	126	-0.1329	0.1784	0.0301
0.95	138	0.1303	0.2035	0.0301
0.95	150	0.241	0.2156	0.0304
0.95	162	0.2738	0.2011	0.0305
0.95	174	0.134	0.2138	0.0301
0.95	186	-0.2249	0.2649	0.0303
0.95	234	0.181	0.2599	0.0302
0.95	246	-0.0497	0.2619	0.03
0.95	258	-0.4545	0.2489	0.0313
0.95	270	-0.091	0.2472	0.0301