CLAS Physics Database

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Measurement E151M1967

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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 :	0.1435 GeV²
W :	1265 GeV
ε :	0.9578
E_beam :	2.2596 GeV
ε_L:	0.6494

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	66	0.9075	1.9461	0.0886
0.35	78	0.7184	1.7821	0.0725
0.45	66	3.0761	1.8607	0.2843
0.45	78	-1.8802	2.1842	0.1754
0.65	270	1.0523	1.6267	0.1013
0.65	282	-0.7675	1.5448	0.0767
0.75	102	-2.9087	2.0745	0.269
0.75	114	5.9718	2.1892	0.5496
0.75	258	-3.1521	1.7462	0.2912
0.75	270	-0.9739	1.4542	0.0944
0.75	282	0.2236	1.3713	0.0364
0.85	90	-2.0623	2.2729	0.1919
0.85	102	-0.5741	2.1373	0.0607
0.85	114	-3.1813	2.3738	0.2939
0.85	126	5.2672	2.4985	0.485
0.85	258	-2.4972	1.9667	0.2314
0.85	270	0.0473	1.9627	0.0303
0.85	282	0.2895	1.7617	0.0401
0.95	90	-1.1351	6.6259	0.1085
0.95	114	1.4252	7.006	0.1344
0.95	126	6.5295	0.7703	-0.0943
0.95	138	-5.1423	7.3731	0.4735
0.95	150	8.141	6.4395	0.7488
0.95	162	7.3548	6.4861	0.6766
0.25	66	-0.5423	0.4409	0.0463
0.35	66	0.0037	0.4177	0.03
0.45	66	0.4478	0.4443	0.0418
0.55	66	-0.3231	0.5499	0.0366
0.55	270	0.317	0.608	0.0364
0.65	270	-0.9153	0.3878	0.0667
0.65	282	0.1356	0.4164	0.0313
0.75	90	0.4085	0.5896	0.0401
0.75	102	0.4667	0.5203	0.0427
0.75	114	-0.5336	0.5834	0.0459
0.75	258	-0.1287	0.4411	0.0311
0.75	270	-0.3785	0.4194	0.0388
0.75	282	0.3053	0.4242	0.036
0.85	90	-1.2397	0.4631	0.086
0.85	102	0.2889	0.6029	0.0354
0.85	114	-0.0226	0.4987	0.03
0.85	126	0.3719	0.5948	0.0385
0.85	246	-0.7899	0.6194	0.0595
0.85	258	0.7999	0.4802	0.0601
0.85	270	0.2374	0.4745	0.0337
0.85	282	0.5874	0.4439	0.0486
0.95	90	0.1239	0.9116	0.0311
0.95	102	0.0224	0.7663	0.03
0.95	114	-0.2005	0.8936	0.0327
0.95	126	0.0137	0.9857	0.03
0.95	138	0.0839	1.0337	0.0305
0.95	150	0.8298	1.0489	0.0618
0.95	258	-0.326	1.0209	0.0367