CLAS Physics Database

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Measurement E151M2975

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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 :	0.0348 GeV²
W :	1355 GeV
ε :	0.9487
E_beam :	1.9889 GeV
ε_L:	0.1185

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	0.007	0.2595	0.03
0.25	306	0.0085	0.2709	0.03
0.35	66	-0.0906	0.2472	0.0301
0.35	78	0.2645	0.2191	0.0305
0.35	294	-0.3575	0.2066	0.0308
0.35	306	0.1956	0.2366	0.0303
0.45	66	0.2751	0.2437	0.0305
0.45	78	-0.1376	0.2161	0.0301
0.45	90	0.0372	0.2132	0.03
0.45	270	0.1774	0.2514	0.0302
0.45	282	0.1962	0.2505	0.0303
0.45	294	0.035	0.2026	0.03
0.45	306	-0.0055	0.2255	0.03
0.55	78	-0.1819	0.1764	0.0302
0.55	90	-0.0291	0.1871	0.03
0.55	246	0.0163	0.2797	0.03
0.55	258	0.2068	0.2727	0.0303
0.55	270	0.6631	0.2066	0.0328
0.55	282	-0.1839	0.2625	0.0302
0.55	294	-0.2774	0.2078	0.0305
0.65	78	0.1539	0.1972	0.0302
0.65	90	0.1942	0.213	0.0303
0.65	114	-0.3289	0.2376	0.0307
0.65	126	0.194	0.2393	0.0302
0.65	138	0.0077	0.2337	0.03
0.65	222	0.348	0.207	0.0308
0.65	234	0.0326	0.2088	0.03
0.65	246	-0.0602	0.2018	0.03
0.65	258	-0.4688	0.1924	0.0314
0.65	282	-0.6779	0.1957	0.0329
0.75	102	-0.2542	0.2734	0.0304
0.75	114	0.1181	0.1878	0.0301
0.75	126	0.0142	0.2224	0.03
0.75	138	0.3112	0.1686	0.0306
0.75	150	0.0207	0.2464	0.03
0.75	162	-0.0901	0.2592	0.0301
0.75	222	0.1462	0.1878	0.0301
0.75	234	-0.052	0.185	0.03
0.75	246	0.0275	0.1434	0.03
0.75	258	-0.0859	0.1781	0.03
0.85	114	0.2281	0.2576	0.0303
0.85	126	-0.0466	0.2259	0.03
0.85	138	-0.1977	0.2045	0.0303
0.85	150	-0.4208	0.2175	0.0312
0.85	162	-0.1805	0.279	0.0302
0.85	210	-0.3271	0.2403	0.0307
0.85	222	0.0561	0.2015	0.03
0.85	234	0.1711	0.165	0.0302
0.85	246	0.08	0.1458	0.03
0.85	258	0.096	0.1819	0.0301
0.95	246	-0.446	0.2514	0.0313