CLAS Physics Database

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Measurement E151M266

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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 :	0.1435 GeV²
W :	1295 GeV
ε :	0.8461
E_beam :	1.3383 GeV
ε_L:	0.4838

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
0.55	258	-0.6385	0.3431	0.0495
0.55	270	-0.8032	0.3371	0.0585
0.55	282	0.2716	0.4654	0.0344
0.65	246	-0.1458	0.3613	0.0391
0.65	258	-0.1843	0.329	0.0429
0.65	270	0.394	0.3519	0.0388
0.65	282	-0.6103	0.3277	0.0479
0.75	102	-0.6614	0.4647	0.0653
0.75	114	-0.5467	0.4458	0.0451
0.75	126	-0.2253	0.345	0.0374
0.75	138	1.9648	1.0882	0.1221
0.75	234	-0.9741	0.4385	0.0674
0.75	246	0.0859	0.3432	0.0453
0.75	258	-0.2653	0.2814	0.0465
0.75	270	0.4413	0.3407	0.0414
0.75	282	-0.3311	0.2938	0.0401
0.75	294	-0.0583	0.4114	0.0345
0.85	90	0.8158	0.5409	0.0587
0.85	102	-0.3993	0.3413	0.041
0.85	114	0.2036	0.3381	0.0327
0.85	126	-0.2829	0.3261	0.0354
0.85	138	-0.527	0.3292	0.0446
0.85	150	-0.3189	0.6594	0.0356
0.85	162	0.3618	0.4035	0.0506
0.85	174	-0.8394	0.4987	0.0724
0.85	234	0.3808	0.4364	0.0429
0.85	246	-0.4399	0.3866	0.0405
0.85	258	-0.1078	0.3358	0.035
0.85	270	-0.103	0.3259	0.0334
0.85	282	-0.258	0.2806	0.0347
0.85	294	0.1425	0.3266	0.0313
0.95	66	-0.2307	0.4714	0.0332
0.95	78	0.4828	0.5227	0.0424
0.95	114	-0.1849	0.3369	0.0353
0.95	126	-0.1578	0.3966	0.0328
0.95	138	0.3195	0.4113	0.0373
0.95	150	1.0131	0.3779	0.0696
0.95	162	-0.6098	0.328	0.0478
0.95	174	-0.5152	0.3085	0.0531
0.95	186	0.0551	0.4736	0.0302
0.95	246	0.189	0.6989	0.0321
0.95	258	-0.1527	0.5811	0.0314
0.95	270	-0.5846	0.4673	0.0463
0.95	294	-0.5711	0.4239	0.0464