CLAS Physics Database

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Measurement E151M2093

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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_LL,

Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π⁺n, polarization: none

Q² :	0.0415 GeV²
W :	1565 GeV
ε :	0.8903
E_beam :	2.2596 GeV
ε_L:	0.0502

Select data slice:
cos(θ_π⁺) =

Observable quantity measured (Y axis): A_LL,
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_LL	Stat. error	Syst. error
0.35	78	-0.1445	0.8211	0.0314
0.45	78	-0.6736	0.7804	0.0531
0.45	126	0.6494	0.9094	0.0518
0.45	282	0.181	0.7705	0.0322
0.55	78	-0.5987	0.8368	0.0492
0.55	114	-1.178	0.8546	0.0823
0.55	126	0.3142	0.9066	0.0363
0.55	270	0.9673	0.8487	0.0697
0.65	126	0.5032	0.9872	0.0444
0.65	138	0.9149	0.822	0.0667
0.65	210	-0.4717	0.8561	0.0429
0.65	222	0.5576	0.8995	0.0471
0.75	114	-0.6103	0.9462	0.0498
0.75	126	-1.0405	0.9708	0.074
0.75	138	0.1535	0.859	0.0316
0.75	222	0.1293	0.7971	0.0312
0.75	234	-0.3657	0.9559	0.0383
0.75	282	0.5829	0.9189	0.0484
0.85	102	0.0647	1.0007	0.0303
0.85	114	0.5787	0.94	0.0481
0.85	210	1.2276	0.944	0.0853
0.85	222	-1.0922	0.8263	0.0771
0.85	234	-0.0544	0.9724	0.0302
0.35	270	1.8016	0.685	0.1683
0.45	78	1.3374	0.7852	0.1265
0.55	126	-0.4006	0.9768	0.0475
0.55	138	0.4529	0.9156	0.0513
0.55	282	-1.7346	0.7234	0.1622
0.65	138	-0.3596	0.9195	0.0446
0.65	222	-0.7343	0.9093	0.0738
0.75	66	0.6136	0.9947	0.0639
0.75	126	-1.0609	1.0464	0.102
0.75	234	1.8314	0.7437	0.171
0.75	282	2.3866	2.3866	0.2214
0.85	102	0.259	1.0578	0.0383
0.85	114	0.6767	1.2096	0.0691
0.85	222	-0.1394	1.0861	0.0326
0.85	234	-1.723	0.9666	0.1612