CLAS Physics Database

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Measurement E151M1627

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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_LL,

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_LL,
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_LL	Stat. error	Syst. error
0.45	30	-0.4411	1.0893	0.0395
0.45	42	0.6437	0.7699	0.0487
0.45	222	-1.1194	0.6747	0.0745
0.55	138	-0.2255	0.887	0.0329
0.55	150	-1.3832	0.8518	0.0882
0.55	210	0.4635	0.8998	0.0409
0.55	222	-1.3277	0.7888	0.085
0.55	234	0.1826	0.7787	0.0319
0.65	138	-0.8254	0.8683	0.0579
0.65	150	1.486	0.8117	0.094
0.65	210	-0.9129	0.7567	0.0624
0.65	222	0.388	0.798	0.038
0.75	222	-0.7707	0.7673	0.0551
0.75	234	-0.3782	0.7343	0.0376
0.85	126	1.1504	0.9589	0.0752
0.85	138	0.3606	0.8637	0.037
0.85	222	-1.3757	0.8009	0.0877
0.85	234	0.6008	0.7426	0.0469
0.45	234	-1.2665	0.9884	0.0795
0.55	138	0.7304	1.2067	0.052
0.55	210	-2.1768	0.7121	0.1301
0.55	222	-0.2674	1.288	0.0338
0.55	234	-1.2322	0.7788	0.0777
0.65	138	2.9271	2.9271	0.1728
0.65	222	2.204	0.6722	0.1316
0.65	234	-1.1433	0.9675	0.0729
0.75	210	-0.3152	1.1493	0.0352
0.75	222	-1.6037	0.663	0.098
0.75	234	0.4613	1.0441	0.0402
0.85	222	-1.1707	1.0229	0.0744
0.85	234	0.3257	1.1366	0.0355