CLAS Physics Database

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Measurement E151M1451

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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 :	1235 GeV
ε :	0.866
E_beam :	1.3383 GeV
ε_L:	0.7849

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
0.45	270	1.9459	1.9459	0.1171
0.45	282	-0.2561	0.7276	0.0335
0.45	294	1.2368	0.631	0.0779
0.55	270	-0.5471	0.6821	0.0437
0.55	282	0.8509	0.6888	0.0579
0.55	294	0.4388	0.7214	0.0394
0.65	258	0.4592	0.6674	0.0402
0.65	270	-0.0423	0.6213	0.0301
0.65	282	0.0242	0.6653	0.03
0.75	258	-0.1922	0.7455	0.032
0.75	270	-0.9469	0.5514	0.0627
0.75	282	-0.6328	0.5185	0.0475
0.75	294	0.5621	0.6519	0.0444
0.85	90	-0.2717	0.8516	0.0339
0.85	102	-1.2822	0.7174	0.0804
0.85	114	1.4397	0.5205	0.0889
0.85	126	-0.778	0.7733	0.0543
0.85	138	0.9547	0.7041	0.0631
0.85	258	-0.6104	0.6542	0.0465
0.95	90	1.5639	0.4893	0.0958
0.95	102	1.3276	0.5631	0.0828
0.95	114	0.3868	0.8804	0.0375
0.95	126	-0.1857	0.8096	0.0319
0.95	138	-1.0046	0.6694	0.0657
0.95	150	-0.4955	0.715	0.0416
0.95	162	-0.2452	0.7437	0.0332
0.95	186	0.4946	0.7241	0.0416
0.35	282	0.347	0.6426	0.0365
0.35	294	-0.918	0.5742	0.0627
0.45	282	-0.6547	0.5937	0.0494
0.55	258	-0.4533	0.6936	0.0405
0.55	270	-0.5643	0.5736	0.0452
0.55	282	0.4078	0.5687	0.0387
0.55	294	-0.1174	0.6806	0.0308
0.65	258	-0.7565	0.558	0.0544
0.65	270	-0.9436	0.6524	0.064
0.65	282	-0.3868	0.5571	0.0379
0.65	294	-1.3917	0.4657	0.0886
0.75	258	-0.092	0.5498	0.0305
0.75	270	-0.2316	0.5111	0.0331
0.75	282	-0.8713	0.5806	0.0602
0.75	294	0.5518	0.601	0.0447
0.85	90	0.6507	0.5923	0.0492
0.85	102	0.1421	0.5505	0.0312
0.85	114	0.0404	0.5266	0.0301
0.85	126	0.2291	0.6069	0.033
0.85	138	-1.3059	0.4996	0.0838
0.85	258	-0.0022	0.6198	0.03
0.85	270	0.9062	0.5369	0.062
0.85	282	-0.1057	0.53	0.0307
0.95	90	0.0731	0.58	0.0303
0.95	102	0.5114	0.5891	0.0429
0.95	114	-0.0705	0.4671	0.0303
0.95	126	0.2877	0.5104	0.0346
0.95	138	-0.0508	0.5131	0.0302
0.95	150	0.3694	0.5585	0.0373
0.95	162	-0.0287	0.5578	0.03
0.95	174	-0.4402	0.5116	0.04
0.95	198	-1.2279	0.5268	0.0795