CLAS Physics Database

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Measurement E151M1290

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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 :	0.0205 GeV²
W :	1295 GeV
ε :	0.8603
E_beam :	1.0539 GeV
ε_L:	0.093

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
0.15	42	-0.1365	0.7894	0.0337
0.25	42	0.1386	0.6285	0.0338
0.25	54	-0.3621	0.6796	0.0507
0.35	42	0.4476	0.5954	0.0587
0.35	54	0.3975	0.5202	0.0539
0.35	66	1.0206	0.7552	0.119
0.45	30	-0.5068	0.6001	0.0646
0.45	42	-0.6057	0.5494	0.0746
0.45	54	1.2825	0.6225	0.1477
0.45	246	0.4573	0.7399	0.0597
0.45	258	-0.8365	0.6771	0.099
0.55	42	0.8886	0.6123	0.1046
0.55	54	-0.634	0.5197	0.0775
0.55	222	-0.0717	0.7564	0.0311
0.55	234	0.1153	0.4902	0.0327
0.55	246	0.0543	0.4386	0.0306
0.55	258	0.0096	0.3932	0.03
0.55	270	0.3709	0.4374	0.0515
0.65	150	-0.5023	0.6651	0.0641
0.65	162	0.4916	0.763	0.063
0.65	174	0.4578	0.6253	0.0597
0.65	186	1.3402	0.7452	0.1541
0.65	210	-0.376	0.655	0.0519
0.65	222	-0.1979	0.5658	0.0374
0.65	234	0.1691	0.4319	0.0355
0.65	246	0.4096	0.3409	0.0551
0.65	258	0.1988	0.3383	0.0375
0.65	270	-0.0691	0.4595	0.031
0.75	126	0.1452	0.7312	0.0342
0.75	138	-0.2869	0.5793	0.0441
0.75	150	0.7059	0.5534	0.0851
0.75	162	0.0569	0.6348	0.0307
0.75	174	-0.5013	0.5096	0.064
0.75	186	0.1298	0.7161	0.0334
0.75	198	1.2625	0.6227	0.1455
0.75	210	-0.3493	0.6004	0.0495
0.75	222	0.65	0.5401	0.0792
0.75	234	0.2377	0.41	0.0402
0.75	246	0.2672	0.3524	0.0425
0.75	258	0.2459	0.3566	0.0409
0.75	270	0.401	0.4309	0.0543
0.75	282	-0.9965	0.6408	0.1163
0.85	138	0.0399	0.6437	0.0303
0.85	150	0.3843	0.566	0.0527
0.85	162	1.3236	0.5606	0.1523
0.85	174	-0.3062	0.6814	0.0457
0.85	198	-0.3683	0.7047	0.0512
0.85	210	-0.0754	0.6808	0.0312
0.85	222	-0.4403	0.5201	0.058
0.85	234	0.5817	0.4	0.0721
0.85	246	-0.2341	0.3545	0.04
0.85	258	0.0455	0.3268	0.0304
0.85	270	0.1274	0.4531	0.0333