CLAS Physics Database

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Measurement E151M1044

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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 :	0.496 GeV²
W :	1475 GeV
ε :	0.8952
E_beam :	2.999 GeV
ε_L:	0.4873

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
0.25	282	-0.3127	0.5868	0.0377
0.25	294	-1.3297	0.5367	0.1017
0.45	90	1.8041	0.8084	0.1352
0.45	102	0.0583	0.6816	0.0303
0.55	78	0.4834	0.7279	0.0464
0.55	90	0.5112	0.7341	0.0479
0.55	102	-0.0077	0.6802	0.03
0.65	54	1.334	0.9392	0.102
0.65	78	0.5081	0.6001	0.0477
0.65	90	0.4131	0.8329	0.0426
0.65	102	-0.9071	0.5096	0.0728
0.65	114	0.1069	0.7707	0.031
0.65	246	0.8656	0.6626	0.07
0.65	258	1.4005	0.8541	0.1067
0.75	54	-0.0527	0.6195	0.0302
0.75	78	-0.2098	0.773	0.0337
0.75	90	-0.7397	0.497	0.0618
0.75	102	-0.6063	0.5815	0.0535
0.75	114	-0.4505	0.7481	0.0445
0.75	222	-0.3552	0.6471	0.0397
0.75	234	-0.3083	0.6569	0.0375
0.75	246	-0.0684	0.6572	0.0304
0.75	258	-0.0387	0.7503	0.0301
0.75	270	0.5763	0.6925	0.0517
0.75	282	1.2584	0.7613	0.0967
0.75	294	1.8072	0.7434	0.1355
0.85	54	-0.0428	0.7021	0.0302
0.85	90	0.6996	0.7075	0.0593
0.85	222	0.3764	0.8047	0.0407
0.85	234	2.0705	0.796	0.1543
0.85	246	0.4948	0.6984	0.047
0.85	258	-0.32	0.5286	0.038
0.85	270	0.0697	0.5754	0.0304
0.85	282	-0.6098	0.4245	0.0537
0.85	294	-0.1866	0.5135	0.033
0.85	306	0.2553	0.5846	0.0353
0.85	318	0.4186	0.6104	0.0429
0.95	210	0.1545	0.7791	0.0321
0.95	234	-0.8272	0.537	0.0675
0.95	246	-0.7003	0.5982	0.0593
0.95	258	2.5403	2.5403	0.1881
0.95	270	-1.0368	0.4784	0.0815
0.95	282	0.3639	0.6363	0.0401
0.95	294	0.0593	0.5196	0.0303
0.95	306	-0.0966	0.5457	0.0308
0.95	318	0.0176	0.5249	0.03
0.95	330	-0.6325	0.5036	0.0551
0.95	342	-0.0011	0.6986	0.03