CLAS Physics Database

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Measurement E151M531

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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 :	1355 GeV
ε :	0.9487
E_beam :	1.9889 GeV
ε_L:	0.1185

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
0.25	66	1.9079	0.5706	0.1205
0.25	306	-0.6184	0.5574	0.0483
0.35	66	0.3864	0.6517	0.0382
0.35	78	0.0918	0.5895	0.0305
0.35	294	0.8543	0.593	0.0603
0.35	306	-0.1013	0.5567	0.0306
0.45	66	1.0508	0.6608	0.0709
0.45	78	0.5853	0.5768	0.0467
0.45	90	0.311	0.5544	0.0355
0.45	270	0.337	0.6436	0.0364
0.45	282	-0.7325	0.5111	0.0539
0.45	294	-0.223	0.462	0.033
0.45	306	-0.8466	0.4504	0.0598
0.55	78	0.7716	0.4768	0.0559
0.55	90	0.07	0.4714	0.0303
0.55	246	0.9013	0.7255	0.0628
0.55	258	-0.9271	0.5385	0.0641
0.55	270	-1.0365	0.4908	0.0701
0.55	282	-0.0263	0.64	0.03
0.55	294	-0.1596	0.4866	0.0315
0.65	78	-0.2147	0.4735	0.0327
0.65	90	0.2494	0.5488	0.0337
0.65	114	0.3911	0.6511	0.0384
0.65	126	-0.3407	0.5693	0.0365
0.65	138	-0.4382	0.5361	0.0402
0.65	222	1.3594	0.5584	0.0884
0.65	234	-0.0124	0.4988	0.03
0.65	246	0.6792	0.511	0.0512
0.65	258	0.6552	0.5328	0.0501
0.65	282	-1.04	0.5036	0.0703
0.75	102	0.2781	0.7044	0.0345
0.75	114	0.4343	0.5015	0.0401
0.75	126	-0.187	0.5326	0.0321
0.75	138	0.5826	0.4749	0.0466
0.75	150	-0.3759	0.5715	0.0378
0.75	162	-0.1885	0.6175	0.0321
0.75	222	1.0952	0.5078	0.0734
0.75	234	1.4612	0.4673	0.0943
0.75	246	-0.2376	0.325	0.0333
0.75	258	1.0068	0.4565	0.0685
0.85	114	0.0691	0.6536	0.0303
0.85	126	-0.5705	0.5002	0.046
0.85	138	-0.1293	0.5087	0.031
0.85	150	0.9949	0.6352	0.0678
0.85	162	0.3257	0.6906	0.036
0.85	210	1.2965	0.7001	0.0848
0.85	222	-0.1986	0.4555	0.0324
0.85	234	0.3233	0.4053	0.0359
0.85	246	-0.4341	0.3075	0.0401
0.85	258	0.7425	0.4523	0.0544
0.95	246	-0.0531	0.5491	0.0302