CLAS Physics Database

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Measurement E151M3030

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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 :	0.1435 GeV²
W :	1445 GeV
ε :	0.8826
E_beam :	1.9889 GeV
ε_L:	0.2443

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
0.15	54	0.0266	0.2547	0.03
0.25	66	0.1378	0.2227	0.0301
0.25	78	-0.3088	0.2685	0.0306
0.35	66	-0.3437	0.2004	0.0308
0.35	78	-0.4459	0.1926	0.0313
0.35	282	0.0565	0.242	0.03
0.35	294	-0.1351	0.2535	0.0301
0.35	306	0.4892	0.2376	0.0316
0.45	66	0.2173	0.2076	0.0303
0.45	78	0.3017	0.2007	0.0306
0.45	270	-0.0423	0.2806	0.03
0.45	282	-0.2535	0.2023	0.0304
0.45	294	-0.2188	0.2038	0.0303
0.55	54	-0.0332	0.2702	0.03
0.55	78	0.5428	0.2252	0.0319
0.55	102	0.2373	0.258	0.0304
0.55	114	-0.0359	0.2472	0.03
0.55	270	-0.5754	0.236	0.0321
0.55	282	-0.2512	0.2213	0.0304
0.65	90	-0.0804	0.2598	0.03
0.65	102	0.2694	0.2099	0.0305
0.65	114	0.1271	0.1976	0.0301
0.65	126	0.3402	0.1991	0.0308
0.65	138	-0.127	0.2748	0.0301
0.65	222	-0.3945	0.2224	0.031
0.65	234	-0.151	0.244	0.0302
0.65	246	0.1027	0.2065	0.0301
0.65	258	0.1905	0.2443	0.0302
0.65	270	-0.168	0.235	0.0302
0.65	294	-0.3636	0.2504	0.0309
0.65	306	-0.1053	0.245	0.0301
0.75	90	-0.0781	0.2687	0.03
0.75	102	0.1634	0.2067	0.0302
0.75	114	-0.3329	0.1648	0.0307
0.75	126	-0.0651	0.1919	0.03
0.75	138	-0.1575	0.2393	0.0302
0.75	150	0.0444	0.2423	0.03
0.75	210	-0.2733	0.231	0.0305
0.75	222	-0.2145	0.2322	0.0303
0.75	234	-0.1257	0.1842	0.0301
0.75	246	-0.3269	0.1675	0.0307
0.75	258	-0.189	0.1832	0.0302
0.75	270	0.0415	0.2757	0.03
0.85	78	0.2181	0.253	0.0303
0.85	90	-0.3135	0.225	0.0306
0.85	102	0.3029	0.2436	0.0306
0.85	114	0.4008	0.1899	0.0311
0.85	126	-0.1578	0.1995	0.0302
0.85	138	0.2861	0.2006	0.0305
0.85	150	0.1982	0.2691	0.0303
0.85	210	-0.2978	0.2277	0.0306
0.85	222	-0.3582	0.1984	0.0308
0.85	234	-0.2509	0.1934	0.0304
0.85	246	-0.1741	0.1598	0.0302
0.85	258	0.2256	0.1675	0.0303
0.85	270	0.0858	0.1781	0.03
0.85	282	-0.1305	0.2234	0.0301
0.95	90	0.2858	0.2168	0.0305
0.95	210	0.1509	0.2782	0.0302
0.95	222	0.0476	0.2657	0.03
0.95	234	0.011	0.1886	0.03
0.95	246	-0.2146	0.1748	0.0303
0.95	258	-0.029	0.1942	0.03
0.95	270	0.2017	0.1654	0.0303
0.95	282	0.1358	0.2339	0.0301