CLAS Physics Database

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Measurement E151M673

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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 :	0.0593 GeV²
W :	1625 GeV
ε :	0.8011
E_beam :	1.9889 GeV
ε_L:	0.0505

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
0.35	78	-0.0526	0.8507	0.0302
0.35	90	1.1926	0.8873	0.0789
0.35	282	0.2007	0.6174	0.0324
0.45	78	-0.3108	0.6651	0.0355
0.45	126	0.0106	0.855	0.03
0.45	270	-0.7571	0.6642	0.0552
0.45	282	1.1265	0.7343	0.0751
0.45	294	-1.1012	0.6344	0.0737
0.55	126	-1.0449	0.6967	0.0706
0.55	210	1.6546	0.839	0.1056
0.55	222	0.8586	0.801	0.0605
0.55	258	0.0671	0.8038	0.0303
0.55	270	1.2138	0.6521	0.0801
0.55	282	1.8096	0.7409	0.1147
0.65	78	-0.5439	0.7537	0.0448
0.65	114	0.4716	0.812	0.0416
0.65	126	0.9553	0.7517	0.0657
0.65	138	-0.6234	0.6271	0.0485
0.65	150	-0.6137	0.7171	0.0481
0.65	198	-0.2024	0.6279	0.0325
0.65	210	1.2271	0.7426	0.0808
0.65	222	0.8089	0.647	0.0579
0.65	258	0.6563	0.8285	0.0501
0.65	294	0.3055	0.6072	0.0353
0.75	66	-0.6113	0.6278	0.0479
0.75	78	0.2984	0.8142	0.0351
0.75	126	-0.3167	0.737	0.0357
0.75	138	-1.3035	0.5948	0.0852
0.75	198	0.8662	0.8096	0.0609
0.75	210	1.1857	0.7408	0.0785
0.75	222	0.29	0.5841	0.0349
0.75	234	-0.91	0.5882	0.0632
0.75	270	-0.1527	0.5084	0.0314
0.75	282	-0.5162	0.5304	0.0436
0.75	294	-0.303	0.7414	0.0353
0.85	102	-0.0839	0.5917	0.0304
0.85	114	-0.0002	0.5493	0.03
0.85	126	0.6885	0.6709	0.0517
0.85	198	-0.4611	0.7085	0.0412
0.85	210	1.7652	0.5888	0.1121
0.85	222	0.6648	0.6369	0.0505
0.85	234	0.7363	0.6348	0.0541
0.85	246	1.8339	0.7092	0.1161