CLAS Physics Database

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Measurement E151M528

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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 :	0.2915 GeV²
W :	1325 GeV
ε :	0.8864
E_beam :	1.9889 GeV
ε_L:	0.6685

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
0.65	270	-0.1919	0.5409	0.0322
0.65	282	1.5168	0.5972	0.0975
0.75	90	-0.0944	0.6123	0.0306
0.75	102	0.5005	0.5632	0.0429
0.75	258	0.7835	0.5749	0.0565
0.75	270	-0.4702	0.5378	0.0416
0.75	282	1.0113	0.6481	0.0687
0.75	294	0.0459	0.4961	0.0301
0.85	78	0.7135	0.4926	0.053
0.85	90	0.1159	0.5427	0.0308
0.85	102	-0.7492	0.476	0.0548
0.85	114	-0.2325	0.5701	0.0332
0.85	126	-0.2061	0.5945	0.0325
0.85	234	-0.1177	0.5353	0.0309
0.85	246	0.2137	0.6895	0.0327
0.85	258	0.0669	0.47	0.0303
0.85	270	-0.0173	0.5581	0.03
0.85	282	-0.4874	0.484	0.0423
0.85	294	0.5283	0.5958	0.0441
0.85	306	0.2254	0.512	0.033
0.95	90	0.7913	0.6329	0.0569
0.95	102	-0.6176	0.4866	0.0482
0.95	114	-0.059	0.6642	0.0302
0.95	126	-0.2278	0.5812	0.0331
0.95	246	0.6792	0.6224	0.0512
0.95	270	0.3223	0.4759	0.0359
0.95	282	-0.1648	0.5105	0.0316
0.95	294	-0.442	0.4263	0.0404
0.95	306	-0.7644	0.4584	0.0555