CLAS Physics Database

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Measurement E151M954

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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 :	0.348 GeV²
W :	1235 GeV
ε :	0.9589
E_beam :	2.999 GeV
ε_L:	1.1922

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
0.05	66	0.0708	0.6635	0.0304
0.15	66	0.3928	0.6563	0.0415
0.25	66	-0.2084	0.6	0.0336
0.35	66	-0.3527	0.5987	0.0396
0.35	282	0.6081	0.7071	0.0536
0.35	294	0.0217	0.5646	0.03
0.45	282	0.9294	0.6235	0.0743
0.45	294	0.6289	0.5767	0.0549
0.55	270	-0.4753	0.4823	0.0459
0.55	282	-0.4368	0.4184	0.0438
0.55	294	-0.0827	0.4394	0.0306
0.65	66	0.173	0.5404	0.0326
0.65	78	-0.045	0.5169	0.0302
0.65	90	-0.5725	0.4764	0.0515
0.65	270	0.5816	0.4686	0.052
0.65	282	0.709	0.5175	0.0599
0.65	294	0.7281	0.4687	0.0611
0.65	306	-0.4272	0.5742	0.0433
0.75	54	-0.6698	0.4712	0.0574
0.75	66	0.0516	0.4569	0.0302
0.75	78	1.4362	0.6302	0.1092
0.75	90	-0.5627	0.4049	0.0509
0.75	102	-0.7627	0.4874	0.0633
0.75	258	0.516	0.6656	0.0482
0.75	270	0.7622	0.4744	0.0633
0.75	282	0.523	0.4614	0.0486
0.75	294	0.0514	0.4195	0.0302
0.75	306	0.2738	0.5466	0.0361
0.85	54	-0.5905	0.4358	0.0526
0.85	66	0.0136	0.4687	0.03
0.85	78	-0.2855	0.3977	0.0365
0.85	90	0.0414	0.4714	0.0302
0.85	102	-0.399	0.3778	0.0418
0.85	114	0.099	0.6225	0.0309
0.85	258	-0.5888	0.54	0.0525
0.85	270	0.5328	0.5017	0.0492
0.85	282	1.235	0.6066	0.0951
0.85	294	0.2479	0.4952	0.035
0.85	306	-0.2255	0.4323	0.0342
0.85	318	-0.5228	0.444	0.0486
0.95	54	-0.035	0.4598	0.0301
0.95	66	-1.0463	0.4388	0.0821
0.95	78	0.1896	0.5454	0.033
0.95	90	-0.2077	0.4237	0.0336
0.95	102	0.1731	0.604	0.0326
0.95	114	-1.3276	0.4075	0.1016
0.95	282	0.957	0.556	0.0761