CLAS Physics Database

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Measurement E151M546

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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 :	1385 GeV
ε :	0.9396
E_beam :	1.9889 GeV
ε_L:	0.1001

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	66	0.5274	0.6055	0.0441
0.35	78	-0.5602	0.4485	0.0455
0.35	282	-0.8642	0.4524	0.0608
0.35	294	-0.2381	0.6219	0.0333
0.45	66	-0.4492	0.5468	0.0407
0.45	78	0.3917	0.4409	0.0384
0.45	90	0.4889	0.5776	0.0424
0.45	282	-0.1725	0.4799	0.0318
0.45	294	-0.7222	0.4849	0.0534
0.45	306	-1.2891	0.4471	0.0844
0.55	66	1.6217	0.7236	0.1036
0.55	78	0.7137	0.5025	0.053
0.55	90	0.3703	0.5373	0.0376
0.55	126	-0.161	0.6997	0.0316
0.55	246	-0.1458	0.5421	0.0313
0.55	258	-0.1826	0.7065	0.032
0.55	270	0.057	0.4961	0.0302
0.55	282	0.0098	0.4473	0.03
0.55	294	-0.4106	0.457	0.0391
0.65	78	-0.1023	0.5058	0.0306
0.65	90	0.2225	0.636	0.0329
0.65	102	0.9064	0.6352	0.063
0.65	114	-0.5326	0.5856	0.0443
0.65	126	-0.7643	0.4943	0.0555
0.65	138	-0.5704	0.5214	0.046
0.65	222	0.6083	0.6063	0.0478
0.65	234	1.1318	0.4697	0.0754
0.65	246	0.5876	0.4674	0.0468
0.65	258	-0.4458	0.5567	0.0405
0.65	270	-0.1838	0.6529	0.032
0.65	282	-0.8155	0.5511	0.0582
0.75	90	0.2752	0.6371	0.0344
0.75	102	0.5605	0.7085	0.0456
0.75	114	0.4748	0.5023	0.0418
0.75	126	0.067	0.4846	0.0303
0.75	138	-0.4361	0.4389	0.0401
0.75	150	0.3437	0.5571	0.0366
0.75	210	-0.2141	0.5426	0.0327
0.75	222	0.644	0.5064	0.0495
0.75	234	-0.0155	0.4551	0.03
0.75	246	-0.3006	0.3818	0.0352
0.75	258	-0.2216	0.5391	0.0329
0.85	114	-0.4217	0.5813	0.0396
0.85	126	0.0842	0.5078	0.0304
0.85	138	0.5041	0.5322	0.043
0.85	150	-0.5045	0.5075	0.043
0.85	210	-1.0758	0.3828	0.0723
0.85	222	0.203	0.4695	0.0325
0.85	234	0.0126	0.4383	0.03
0.85	246	1.3815	0.406	0.0897
0.85	258	1.2757	0.4739	0.0836
0.95	222	0.8261	0.5452	0.0588