CLAS Physics Database

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Measurement E151M2176

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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 :	0.348 GeV²
W :	1235 GeV
ε :	0.9589
E_beam :	2.999 GeV
ε_L:	1.1922

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
0.05	66	0.5906	0.7448	0.0523
0.15	66	-0.9435	0.7278	0.0747
0.25	66	0.3648	0.7149	0.04
0.35	66	-1.1337	0.6933	0.0875
0.35	282	-0.0726	0.7507	0.0305
0.35	294	0.2726	0.6499	0.0359
0.45	282	-0.4554	0.643	0.0446
0.45	294	0.3184	0.6291	0.0379
0.55	270	-0.6748	0.6013	0.0574
0.55	282	0.0627	0.5258	0.0303
0.55	294	0.5243	0.501	0.0484
0.65	66	0.1194	0.613	0.0312
0.65	78	-0.1446	0.5975	0.0318
0.65	90	0.3941	0.6097	0.0414
0.65	270	-0.6499	0.4877	0.0559
0.65	282	0.5196	0.5349	0.0482
0.65	294	0.3218	0.4971	0.038
0.65	306	-0.8141	0.6864	0.0662
0.75	54	-0.4886	0.6174	0.0464
0.75	66	0.3584	0.5141	0.0397
0.75	78	-0.4316	0.6553	0.0434
0.75	90	-0.9651	0.4903	0.0761
0.75	102	-0.9712	0.6051	0.0765
0.75	258	-1.1078	0.603	0.0857
0.75	270	-0.0615	0.5073	0.0303
0.75	282	0.3889	0.5041	0.0412
0.75	294	-0.7319	0.4638	0.061
0.75	306	1.0467	0.575	0.0816
0.85	54	1.221	0.5194	0.0935
0.85	66	-0.1731	0.5393	0.0325
0.85	78	0.5417	0.471	0.0494
0.85	90	-0.2947	0.5416	0.0368
0.85	102	-0.7864	0.4546	0.0644
0.85	114	-0.3579	0.7024	0.0397
0.85	258	-0.7136	0.6966	0.0598
0.85	270	-0.2261	0.545	0.0342
0.85	282	0.0253	0.6252	0.0301
0.85	294	0.6377	0.5256	0.0551
0.85	306	0.2673	0.5171	0.0357
0.85	318	-0.6706	0.5525	0.0571
0.95	54	0.1753	0.5338	0.0326
0.95	66	-0.008	0.6938	0.03
0.95	78	0.1753	0.6124	0.0326
0.95	90	-0.3378	0.5104	0.0387
0.95	102	0.4852	0.6892	0.0462
0.95	114	-0.6848	0.687	0.058
0.95	282	-0.5404	0.5778	0.0494