CLAS Physics Database

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Measurement E151M876

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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_UL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.101 GeV²
W :	1565 GeV
ε :	0.8731
E_beam :	2.2596 GeV
ε_L:	0.1113

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_UL,
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_UL	Stat. error	Syst. error
0.55	126	0.2429	0.7424	0.034
0.55	270	0.5182	0.687	0.0453
0.55	282	-0.0191	0.734	0.03
0.65	102	-0.2753	0.7284	0.035
0.65	114	-0.9918	0.5301	0.0717
0.65	126	-0.3843	0.7488	0.0392
0.65	222	1.2306	0.9222	0.0861
0.65	246	0.1267	0.8183	0.0311
0.75	114	-0.0246	0.8002	0.03
0.75	126	-0.79	0.7435	0.0599
0.75	138	-1.4466	0.6347	0.0996
0.75	222	1.0566	0.8483	0.0755
0.75	234	-0.2592	0.8019	0.0345
0.75	294	-0.4232	0.6587	0.0409
0.85	90	-1.2629	0.5351	0.0881
0.85	102	-0.3963	0.6521	0.0397
0.85	210	0.0799	0.8733	0.0305
0.85	222	-0.2922	0.659	0.0356
0.85	234	0.6468	0.8382	0.052
0.85	246	-0.7593	0.724	0.0582
0.85	282	1.2276	0.8742	0.086
0.95	234	0.3589	1.239	0.0381
0.95	246	-0.2352	1.3611	0.0337
0.45	282	0.0548	0.6698	0.0304
0.55	114	-0.0895	0.8464	0.0311
0.55	126	0.471	0.8887	0.0528
0.55	258	0.2369	0.7362	0.0371
0.55	270	-0.4859	0.621	0.054
0.65	126	-1.0614	0.6959	0.1025
0.65	138	0.5753	0.8863	0.061
0.65	222	0.1602	0.7263	0.0334
0.75	102	-0.1306	0.8976	0.0323
0.75	114	0.1337	0.765	0.0324
0.75	126	-0.5586	0.7656	0.0596
0.75	210	0.8275	0.8248	0.0821
0.75	222	0.7871	0.8615	0.0786
0.75	234	0.603	0.8005	0.0632
0.75	282	0.0549	0.6304	0.0304
0.75	294	-0.4406	0.691	0.0505
0.85	90	0.0214	0.9737	0.0301
0.85	210	1.8331	0.9213	0.1718
0.85	222	0.0148	0.8169	0.03
0.85	234	0.1056	0.8009	0.0315
0.95	210	2.2772	2.7195	0.2123
0.95	222	-1.5835	2.3034	0.1492
0.95	246	-0.9479	2.2182	0.0925