CLAS Physics Database

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Measurement E151M169

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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 :	0.0143 GeV²
W :	1445 GeV
ε :	0.6575
E_beam :	1.0539 GeV
ε_L:	0.0223

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	Data errors	Systematic errors
0.25	42	-0.69	0.6657	0.084
0.25	54	-0.4709	0.7155	0.0614
0.35	30	-0.2258	0.7537	0.0395
0.35	42	0.7578	0.6355	0.0913
0.35	54	0.3428	0.4926	0.0492
0.35	66	1.2383	0.816	0.144
0.45	30	1.7928	0.839	0.2062
0.45	42	1.2322	0.5616	0.1434
0.45	54	-0.9396	0.4432	0.111
0.45	66	1.1044	0.6313	0.1292
0.45	222	1.3651	0.8025	0.1582
0.45	234	0.4547	0.6473	0.0598
0.45	246	1.2922	0.8049	0.15
0.55	30	-0.1636	0.7174	0.0353
0.55	42	1.1889	0.6723	0.1386
0.55	54	0.373	0.5019	0.052
0.55	66	-0.7942	0.676	0.0952
0.55	150	-1.651	0.5488	0.1902
0.55	174	-0.3501	0.7775	0.0499
0.55	222	1.8059	0.6918	0.2076
0.55	234	-0.5936	0.5269	0.0739
0.55	246	0.7374	0.5285	0.0891
0.55	258	-1.1788	0.5226	0.1374
0.65	54	-0.0216	0.8409	0.0301
0.65	150	-0.095	0.6094	0.0319
0.65	162	-0.659	0.6012	0.0808
0.65	174	0.6809	0.7326	0.0831
0.65	210	1.1648	0.8357	0.1359
0.65	222	-0.097	0.5208	0.032
0.65	234	0.9023	0.5584	0.107
0.65	246	0.1971	0.5113	0.0375
0.65	258	1.3543	0.669	0.157
0.75	30	0.2232	0.7395	0.0393
0.75	138	-0.9062	0.6112	0.1074
0.75	150	1.593	0.8005	0.1837
0.75	162	-1.0882	0.6627	0.1274
0.75	222	0.253	0.5494	0.0416
0.75	234	-0.008	0.4931	0.03
0.75	246	-0.5807	0.4435	0.0726
0.75	258	-0.5035	0.5298	0.0647
0.85	210	-0.2006	0.6429	0.0377
0.85	222	1.1795	0.5611	0.1375
0.85	234	-0.074	0.4301	0.0312
0.85	246	-0.2225	0.4306	0.0393
0.85	258	-0.7054	0.5107	0.0857
0.95	246	0.0199	0.5892	0.0301