CLAS Physics Database

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Measurement E151M1839

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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 :	0.1715 GeV²
W :	1505 GeV
ε :	0.8405
E_beam :	1.9889 GeV
ε_L:	0.2096

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
0.25	66	0.2555	0.7743	0.0338
0.25	282	-0.911	0.6438	0.0628
0.35	66	0.8365	0.7445	0.0589
0.35	78	0.118	0.7887	0.0308
0.35	282	-0.0311	0.6638	0.0301
0.35	294	-0.4089	0.8061	0.0389
0.45	66	1.4028	0.758	0.0901
0.45	282	-0.2385	0.6657	0.0333
0.45	294	1.0551	0.6572	0.0706
0.55	102	-1.4497	0.63	0.0928
0.55	114	-0.7051	0.7678	0.0522
0.55	126	0.2943	0.8188	0.0349
0.55	246	0.3649	0.7266	0.0373
0.55	282	-0.2309	0.786	0.0331
0.65	102	-0.0848	0.6598	0.0304
0.65	114	0.0082	0.5797	0.03
0.65	126	0.4692	0.7758	0.0413
0.65	138	-0.3823	0.7643	0.0379
0.65	222	-0.7521	0.6828	0.0546
0.65	234	-0.3851	0.6928	0.038
0.65	246	-0.0499	0.7929	0.0302
0.65	294	-0.5402	0.6268	0.0444
0.65	306	0.9269	0.6952	0.0637
0.75	102	-0.0847	0.5256	0.0304
0.75	114	-0.0815	0.5322	0.0304
0.75	126	-0.4316	0.6999	0.0398
0.75	138	-0.9437	0.8743	0.0646
0.75	150	0.395	0.8062	0.0384
0.75	210	-0.6496	0.7032	0.0495
0.75	222	-0.0461	0.6723	0.0301
0.75	234	1.5816	0.5811	0.1004
0.75	246	0.1483	0.5401	0.0313
0.75	258	1.1472	0.587	0.0757
0.85	78	0.1138	0.7679	0.0308
0.85	90	-0.6607	0.7404	0.05
0.85	102	-0.5763	0.7372	0.046
0.85	114	0.0219	0.7572	0.03
0.85	126	0.3158	0.744	0.0356
0.85	138	0.1766	0.6313	0.0319
0.85	198	0.9157	0.6673	0.0631
0.85	210	-0.5386	0.6532	0.0443
0.85	222	-1.1414	0.5872	0.0754
0.85	234	-0.0547	0.56	0.0302
0.85	246	-0.6376	0.4638	0.0489
0.85	258	-0.2446	0.5486	0.0335
0.85	270	-0.572	0.5856	0.0458
0.95	90	-1.256	0.6189	0.0818
0.95	222	-0.4875	0.6593	0.0421
0.95	234	0.2671	0.5642	0.0341
0.95	246	-0.3804	0.6368	0.0378
0.95	258	0.5921	0.5549	0.0468
0.95	270	1.0345	0.6032	0.0695
0.95	282	-0.381	0.637	0.0379