CLAS Physics Database

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Measurement E151M1994

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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 :	0.205 GeV²
W :	1325 GeV
ε :	0.9333
E_beam :	2.2596 GeV
ε_L:	0.5774

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
0.65	90	1.685	1.5459	0.1577
0.75	90	0.1781	1.6015	0.0342
0.75	102	1.4095	1.7776	0.133
0.75	114	-1.7422	1.7518	0.1629
0.75	258	1.3075	1.4477	0.1239
0.75	270	-0.7358	1.4485	0.074
0.75	294	1.6249	1.2597	0.1523
0.85	78	2.7834	1.8746	0.2576
0.85	90	0.1968	1.7081	0.035
0.85	102	-0.8691	1.5059	0.0853
0.85	114	1.088	1.9146	0.1044
0.85	126	4.2194	1.58	0.3889
0.85	234	3.3298	1.5536	0.3075
0.85	246	2.8915	1.522	0.2674
0.85	258	-1.9194	1.3689	0.1789
0.85	270	3.2553	1.3305	0.3007
0.85	282	0.073	1.4273	0.0307
0.85	294	1.4881	1.4548	0.14
0.95	102	1.1942	5.4402	0.1138
0.95	114	-2.5489	4.7142	0.2362
0.95	126	9.6144	5.1407	0.8841
0.95	270	-2.8295	4.4358	0.2618
0.95	294	-0.5709	4.1515	0.0604
0.25	66	-1.0318	0.5824	0.0735
0.65	102	0.3046	0.6236	0.036
0.65	258	0.801	0.611	0.0601
0.65	270	0.4033	0.5794	0.0399
0.65	282	0.1407	0.576	0.0314
0.75	78	-0.2014	0.5946	0.0327
0.75	90	1.6746	0.5745	0.113
0.75	102	-0.1696	0.6163	0.032
0.75	246	0.2346	0.6306	0.0337
0.75	258	0.5545	0.5128	0.0469
0.75	282	0.1962	0.6029	0.0326
0.75	294	-0.5215	0.557	0.0453
0.85	78	-0.2772	0.7192	0.035
0.85	90	0.5692	0.5836	0.0477
0.85	102	-0.1075	0.5137	0.0308
0.85	114	1.3462	0.5648	0.0926
0.85	126	0.4817	0.751	0.0434
0.85	234	-0.1291	0.824	0.0312
0.85	246	0.4861	0.6694	0.0436
0.85	258	0.869	0.6179	0.064
0.85	282	0.2129	0.6149	0.033
0.85	294	0.8174	0.5588	0.0611
0.95	90	-0.4468	1.0663	0.0418
0.95	102	1.0213	1.1341	0.0729
0.95	114	-1.5486	0.9589	0.1051
0.95	126	0.0284	1.2049	0.0301
0.95	258	-0.7675	1.0047	0.0582
0.95	270	-0.0601	1.1349	0.0303
0.95	282	0.565	1.0747	0.0474
0.95	294	1.8949	0.9091	0.1269