CLAS Physics Database

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Measurement E151M3240

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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 :	0.1715 GeV²
W :	1385 GeV
ε :	0.9248
E_beam :	2.2596 GeV
ε_L:	0.3819

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
0.35	66	0.227	0.2599	0.0303
0.35	294	-0.3401	0.22	0.0308
0.65	90	0.381	0.2333	0.031
0.65	102	-0.5595	0.2208	0.032
0.65	114	0.2741	0.2455	0.0305
0.65	246	-0.2297	0.2426	0.0303
0.65	270	0.1094	0.2638	0.0301
0.75	90	-0.1058	0.2107	0.0301
0.75	102	-0.2175	0.2088	0.0303
0.75	114	-0.2049	0.207	0.0303
0.75	126	0.201	0.2207	0.0303
0.75	222	-0.0573	0.2607	0.03
0.75	246	-0.1307	0.192	0.0301
0.75	258	-0.0743	0.2421	0.03
0.75	270	-0.085	0.2369	0.03
0.75	282	-0.026	0.2642	0.03
0.85	90	-0.0417	0.2479	0.03
0.85	102	0.1117	0.2013	0.0301
0.85	114	0.1074	0.2186	0.0301
0.85	138	0.2301	0.2489	0.0304
0.85	234	-0.3241	0.2292	0.0307
0.85	246	0.1199	0.2	0.0301
0.85	258	-0.4103	0.1983	0.0311
0.85	270	0.0523	0.2185	0.03
0.85	282	0.0647	0.1943	0.03
0.85	294	-0.0731	0.229	0.03
0.95	258	-0.3676	0.1711	0.0309
0.95	270	0.3189	0.1971	0.0307
0.95	282	-0.1456	0.2192	0.0301
0.95	294	-0.0657	0.2494	0.03
0.25	66	-0.1534	0.247	0.0302
0.35	66	-0.3067	0.2436	0.0306
0.45	294	0.2945	0.2274	0.0306
0.55	102	-0.2091	0.2291	0.0303
0.65	90	-0.3771	0.246	0.0309
0.65	102	-0.1049	0.2208	0.0301
0.65	114	0.1399	0.2412	0.0301
0.65	246	-0.168	0.2168	0.0302
0.65	258	-0.1636	0.2522	0.0302
0.75	90	0.048	0.2439	0.03
0.75	102	0.0511	0.1898	0.03
0.75	114	-0.0132	0.2007	0.03
0.75	126	-0.0459	0.2164	0.03
0.75	234	0.2761	0.2303	0.0305
0.75	246	-0.258	0.2017	0.0304
0.75	258	-0.1546	0.1809	0.0302
0.75	270	0.2398	0.249	0.0304
0.85	90	-0.0604	0.2652	0.03
0.85	102	0.2598	0.2196	0.0304
0.85	114	-0.251	0.1819	0.0304
0.85	126	-0.0678	0.2225	0.03
0.85	222	-0.0092	0.2116	0.03
0.85	234	-0.159	0.2471	0.0302
0.85	246	0.1357	0.2081	0.0301
0.85	258	-0.1151	0.1795	0.0301
0.85	270	-0.1173	0.2104	0.0301
0.85	282	-0.3664	0.1869	0.0309
0.85	294	0.5324	0.2014	0.0318
0.95	138	0.2148	0.2742	0.0303
0.95	222	0.2075	0.2333	0.0303
0.95	234	0.2684	0.2451	0.0305
0.95	246	-0.0188	0.2203	0.03
0.95	258	-0.4085	0.2153	0.0311
0.95	270	0.3492	0.2311	0.0308
0.95	282	0.0162	0.238	0.03