CLAS Physics Database

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Measurement E151M2350

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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 :	0.2915 GeV²
W :	1685 GeV
ε :	0.8603
E_beam :	2.999 GeV
ε_L:	0.1744

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	270	-0.2812	0.9633	0.0363
0.45	282	-0.7905	0.7689	0.0647
0.55	102	-1.0044	0.8003	0.0788
0.55	114	-1.2986	0.7856	0.0988
0.55	210	-0.4755	0.9278	0.0457
0.55	294	0.1688	0.8581	0.0324
0.65	90	0.4752	0.7996	0.0457
0.65	102	0.2476	0.707	0.035
0.65	114	0.7278	0.7322	0.0607
0.65	198	0.2873	0.9678	0.0365
0.65	210	-0.6133	0.9428	0.0536
0.65	222	-0.8917	0.8142	0.0713
0.65	234	-0.3116	0.7859	0.0376
0.65	294	-0.2902	0.6848	0.0366
0.65	306	-0.6974	0.7035	0.0588
0.75	78	-0.4562	0.7	0.0447
0.75	102	1.5329	0.7304	0.1151
0.75	114	0.8091	0.6773	0.0659
0.75	126	-0.0607	0.9424	0.0303
0.75	186	-0.1431	0.8184	0.0317
0.75	198	-1.8	0.6586	0.1339
0.75	210	1.7415	0.6849	0.1298
0.75	222	-0.0017	0.7697	0.03
0.75	234	-0.3822	0.6851	0.0408
0.75	246	-0.2243	0.8009	0.0341
0.75	294	-0.7351	0.7967	0.0612
0.85	66	0.7126	0.6172	0.0597
0.85	78	0.3175	0.5856	0.0378
0.85	90	-0.0649	0.6592	0.0304
0.85	186	0.4287	0.8091	0.0432
0.85	198	-1.248	0.6614	0.0953
0.85	210	0.73	0.6444	0.0608
0.85	222	-0.9199	0.4687	0.0731
0.85	234	-0.2713	0.5425	0.0359
0.85	246	-0.4328	0.5109	0.0434
0.85	258	-1.8851	0.6146	0.1399
0.85	270	-0.6823	0.8929	0.0579
0.95	90	-1.5788	0.6518	0.1184
0.95	174	-0.3929	0.7242	0.0414
0.95	198	0.049	0.7094	0.0302
0.95	210	0.113	0.6412	0.0311
0.95	222	-0.0013	0.612	0.03
0.95	234	0.1647	0.5791	0.0323
0.95	246	-0.6049	0.5402	0.0531
0.95	258	-0.6208	0.5551	0.0541
0.95	270	-0.1515	0.5157	0.0319
0.95	282	-0.2427	0.6105	0.0348
0.95	294	-0.2577	0.7479	0.0353