CLAS Physics Database

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Measurement E151M2872

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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 :	1565 GeV
ε :	0.6254
E_beam :	1.3383 GeV
ε_L:	0.0298

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
0.55	138	-0.0984	0.2625	0.0301
0.55	246	-0.0743	0.2695	0.03
0.65	222	-0.2553	0.2665	0.0304
0.65	234	0.2839	0.2327	0.0305
0.65	246	0.132	0.26	0.0301
0.75	162	-0.2272	0.2679	0.0303
0.75	210	-0.438	0.2679	0.0313
0.75	222	-0.0614	0.2442	0.03
0.75	234	0.0956	0.2506	0.0301
0.85	138	0.7325	0.2346	0.0334
0.85	222	0.2705	0.2244	0.0305
0.85	234	-0.0917	0.2726	0.0301
0.85	246	0.2547	0.2439	0.0304
0.35	42	-0.0127	0.3926	0.03
0.45	222	-0.1742	0.3768	0.0302
0.55	222	0.6374	0.2159	0.0326
0.55	234	-0.2486	0.335	0.0304
0.65	138	-0.2706	0.3495	0.0305
0.65	150	-0.0379	0.4244	0.03
0.65	210	-0.1946	0.2901	0.0303
0.65	222	0.2751	0.3477	0.0305
0.65	234	0.0349	0.3925	0.03
0.65	246	-0.5906	0.2288	0.0322
0.75	222	-0.0343	0.3418	0.03
0.75	234	-0.3234	0.3263	0.0307
0.75	246	0.1187	0.4963	0.0301
0.85	150	0.1321	0.4335	0.0301
0.85	210	-0.0853	0.4011	0.03
0.85	222	0.3951	0.284	0.031
0.85	234	0.4073	0.3537	0.0311
0.85	246	-0.023	0.4243	0.03