CLAS Physics Database

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Measurement E151M2770

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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 :	0.205 GeV²
W :	1385 GeV
ε :	0.7262
E_beam :	1.3383 GeV
ε_L:	0.3394

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
0.65	234	0.0422	0.2664	0.03
0.65	246	-0.1524	0.3543	0.0302
0.65	258	-0.2927	0.2098	0.0306
0.75	114	0.319	0.3533	0.0307
0.75	126	0.8054	0.1648	0.0341
0.75	234	0.5215	0.2652	0.0318
0.75	246	-0.2383	0.3092	0.0304
0.75	258	0.482	0.2373	0.0315
0.85	114	0.2537	0.376	0.0304
0.85	138	0.1041	0.397	0.0301
0.85	246	-0.4794	0.3488	0.0315
0.85	258	0.7118	0.3117	0.0332
0.85	270	-0.2638	0.3433	0.0305
0.85	282	0.192	0.3709	0.0302
0.85	294	0.3219	0.3409	0.0307
0.95	66	0.0909	0.4299	0.0301
0.95	270	-0.0186	0.3819	0.03
0.95	282	0.3424	0.3453	0.0308
0.95	294	0.497	0.2351	0.0316
0.65	270	0.2523	0.2499	0.0304
0.75	114	0.013	0.2689	0.03
0.75	126	-0.1376	0.2921	0.0301
0.75	234	-0.3768	0.2288	0.0309
0.75	246	0.1238	0.2341	0.0301
0.75	258	0.1286	0.2539	0.0301
0.75	270	0.0713	0.2589	0.03
0.75	282	0.0453	0.284	0.03
0.85	114	-0.3032	0.2689	0.0306
0.85	126	0.4328	0.2306	0.0312
0.85	150	-0.1094	0.2646	0.0301
0.85	234	0.4034	0.2451	0.0311
0.85	258	-0.2059	0.2473	0.0303
0.85	270	-0.4583	0.2159	0.0314
0.85	282	0.4745	0.2123	0.0315
0.85	294	0.082	0.2749	0.03
0.95	90	-0.1997	0.2701	0.0303
0.95	282	0.3345	0.2198	0.0307
0.95	294	0.1267	0.2628	0.0301