CLAS Physics Database

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Measurement E151M824

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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 :	0.1715 GeV²
W :	1445 GeV
ε :	0.9053
E_beam :	2.2596 GeV
ε_L:	0.2875

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	282	-0.3868	0.8051	0.0466
0.35	294	0.363	0.8616	0.045
0.45	282	0.3482	0.9002	0.044
0.65	102	-0.5372	1.0118	0.0579
0.65	114	-0.0659	1.051	0.0306
0.75	90	0.4913	1.186	0.0544
0.75	102	-0.5929	0.8459	0.0624
0.75	114	-1.7944	0.8445	0.1683
0.75	126	-2.2372	0.7708	0.2086
0.75	246	-0.6775	0.7028	0.0693
0.75	258	-0.1051	0.9778	0.0315
0.75	270	1.6619	0.9854	0.1563
0.85	78	0.9357	1.0911	0.0914
0.85	102	0.2946	1.1065	0.0405
0.85	114	-0.506	0.9757	0.0555
0.85	126	-1.2924	1.1928	0.123
0.85	222	-0.687	1.0651	0.0701
0.85	234	1.1259	1.055	0.1082
0.85	246	-0.9961	0.8145	0.0967
0.85	258	0.8149	0.8756	0.081
0.85	270	1.0522	0.9456	0.1016
0.85	282	-0.1477	1.0166	0.033
0.95	78	0.5826	3.549	0.0616
0.95	234	-4.816	2.1175	0.4455
0.95	246	-0.3802	2.9623	0.0462
0.95	258	-0.4906	2.4924	0.0543
0.95	270	-0.3451	2.3766	0.0438
0.95	282	0.0041	2.4414	0.03
0.25	66	-0.0501	0.582	0.0302
0.35	282	0.9783	0.6096	0.0709
0.35	294	-0.2437	0.6238	0.034
0.45	282	-1.1448	0.4935	0.0809
0.45	294	0.4745	0.6616	0.0432
0.55	102	0.2991	0.7372	0.0359
0.65	102	0.3371	0.5826	0.0373
0.65	114	0.0113	0.7138	0.03
0.65	126	-0.304	0.741	0.036
0.65	234	0.6464	0.7753	0.052
0.65	258	-0.5465	0.6323	0.0468
0.75	90	0.9511	0.5829	0.0693
0.75	102	0.148	0.5444	0.0315
0.75	114	-0.5745	0.543	0.0482
0.75	126	0.8237	0.7151	0.0618
0.75	138	-0.0871	0.6925	0.0305
0.75	222	-0.0325	0.8	0.0301
0.75	246	-0.216	0.5343	0.0332
0.75	258	1.2428	0.6776	0.0869
0.75	270	0.5607	0.6274	0.0475
0.85	102	-0.5065	0.6246	0.0448
0.85	114	-0.5444	0.6642	0.0467
0.85	126	-0.2703	0.6553	0.0349
0.85	210	-0.2421	0.8649	0.0339
0.85	222	0.0816	0.7877	0.0305
0.85	234	-0.4683	0.6324	0.0429
0.85	246	0.4933	0.757	0.0441
0.85	258	1.2329	0.6044	0.0863
0.85	270	0.2637	0.7072	0.0346
0.85	282	-0.0273	0.7073	0.0301
0.95	222	1.2431	1.4013	0.0869
0.95	234	0.1499	1.2832	0.0316
0.95	246	2.0705	1.2147	0.1391
0.95	258	0.2181	1.1909	0.0332
0.95	270	-1.524	0.8778	0.1044
0.95	282	1.5334	1.1603	0.105