CLAS Physics Database

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Measurement E151M392

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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 :	0.0348 GeV²
W :	1505 GeV
ε :	0.7173
E_beam :	1.3383 GeV
ε_L:	0.0436

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
0.35	30	3.368	3.368	0.205
0.35	42	0.7005	0.5319	0.0536
0.45	18	-0.1758	0.8836	0.0318
0.45	30	0.9748	0.4971	0.0674
0.45	42	-0.3165	0.3737	0.0514
0.45	150	-0.3673	0.6113	0.0376
0.45	222	0.4141	0.8803	0.039
0.45	234	0.5803	0.5145	0.0466
0.45	246	0.6657	0.4933	0.0606
0.55	30	0.6707	1.0886	0.0503
0.55	42	0.5012	0.6255	0.0432
0.55	126	-0.6424	0.7806	0.049
0.55	138	-0.8753	0.3695	0.0613
0.55	150	-0.6169	0.3908	0.057
0.55	162	-0.5364	0.5802	0.0448
0.55	210	1.3486	0.5495	0.0887
0.55	222	0.5097	0.4035	0.0445
0.55	234	0.4461	0.3834	0.0506
0.55	246	0.3046	0.445	0.0355
0.65	126	0.3828	0.5455	0.0516
0.65	138	-1.2461	0.3305	0.1054
0.65	150	-1.195	0.3153	0.0793
0.65	162	-0.0489	0.5116	0.0322
0.65	210	0.306	0.4327	0.0365
0.65	222	0.749	0.4134	0.0555
0.65	234	0.44	0.3624	0.0404
0.65	246	0.3574	0.4489	0.0494
0.75	126	-0.1097	0.6202	0.0308
0.75	138	-1.2613	0.4323	0.0899
0.75	150	-1.2866	0.3354	0.0856
0.75	162	-0.0674	0.7949	0.0303
0.75	210	0.626	0.4875	0.0515
0.75	222	0.2631	0.3596	0.0454
0.75	234	0.4971	0.3769	0.0451
0.75	246	0.4633	0.3817	0.0445
0.75	258	-0.0836	0.45	0.0315
0.85	114	0.055	0.4705	0.0322
0.85	126	-0.3118	0.5363	0.0357
0.85	210	0.3908	0.4245	0.0402
0.85	222	0.6882	0.4128	0.0541
0.85	234	0.8143	0.3679	0.0591
0.85	246	0.505	0.3553	0.0432
0.85	258	-0.3762	0.3549	0.0384
0.95	222	1.209	0.4968	0.0806
0.95	234	2.6556	2.6556	0.1627
0.95	246	-0.4339	0.4878	0.0403