CLAS Physics Database

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Measurement E151M2849

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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 :	0.0143 GeV²
W :	1535 GeV
ε :	0.6921
E_beam :	1.3383 GeV
ε_L:	0.0158

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
0.45	30	-0.0266	0.3675	0.03
0.45	42	-0.1476	0.2236	0.0303
0.45	222	0.0097	0.2203	0.03
0.55	138	0.2106	0.2549	0.0303
0.55	150	0.0815	0.2635	0.03
0.55	210	-0.0803	0.2619	0.03
0.55	222	0.2258	0.241	0.0303
0.55	234	-0.6945	0.1966	0.0331
0.65	138	0.1566	0.2565	0.0302
0.65	150	-0.1059	0.2567	0.0301
0.65	210	0.0306	0.2266	0.03
0.65	222	-0.034	0.2465	0.03
0.75	222	0.113	0.2339	0.0301
0.75	234	0.0567	0.2283	0.03
0.85	126	0.0024	0.2889	0.03
0.85	138	0.1705	0.2615	0.0302
0.85	222	0.5744	0.2366	0.0321
0.85	234	-0.2465	0.2365	0.0304
0.45	234	-0.1958	0.3473	0.0303
0.55	138	0.2076	0.3699	0.0303
0.55	210	-0.3354	0.3151	0.0307
0.55	222	-0.625	0.2719	0.0325
0.55	234	-0.185	0.2828	0.0302
0.65	138	0.1295	0.3613	0.0301
0.65	222	0.4293	0.2577	0.0312
0.65	234	0.3151	0.328	0.0307
0.75	210	-0.2344	0.3842	0.0304
0.75	222	-0.5069	0.2258	0.0317
0.75	234	0.4044	0.33	0.0311
0.85	222	-0.0327	0.3798	0.03
0.85	234	0.445	0.3769	0.0313