CLAS Physics Database

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Measurement E151M2337

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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 :	1655 GeV
ε :	0.8724
E_beam :	2.999 GeV
ε_L:	0.1937

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	0.0875	0.8225	0.0307
0.45	102	0.8641	0.7589	0.0695
0.45	270	0.6724	0.835	0.0572
0.45	282	-0.5503	0.8822	0.0499
0.55	90	0.055	0.8574	0.0303
0.55	102	-0.9018	0.9403	0.0719
0.55	114	0.4604	0.8196	0.0449
0.55	126	1.3068	0.9178	0.0994
0.65	90	-0.6073	0.8149	0.0533
0.65	102	1.1768	0.8144	0.0905
0.65	114	-0.383	0.7593	0.0409
0.65	126	-1.3578	0.7432	0.1029
0.65	198	-2.2406	0.7566	0.1652
0.65	210	1.1628	1.0415	0.0895
0.65	222	0.237	0.916	0.0346
0.65	234	-0.0476	0.8796	0.0302
0.65	294	-0.4654	0.7279	0.0452
0.65	306	-0.772	0.8406	0.0635
0.75	66	-0.4974	0.9709	0.0469
0.75	78	0.1109	0.741	0.0311
0.75	102	-0.2122	0.7569	0.0337
0.75	114	-0.5667	0.6942	0.0509
0.75	126	-1.0182	0.9659	0.0797
0.75	138	-2.4399	0.8546	0.1794
0.75	198	0.0925	0.9875	0.0307
0.75	210	-0.2354	0.8461	0.0345
0.75	222	0.0522	0.8177	0.0302
0.75	234	0.6726	0.8422	0.0573
0.75	246	-0.0882	0.8965	0.0307
0.75	258	-0.6713	0.9094	0.0572
0.75	282	-1.5976	0.8534	0.1197
0.75	294	0.2376	0.8191	0.0346
0.85	66	0.494	0.7153	0.0467
0.85	78	-0.4315	0.5849	0.0433
0.85	90	0.0087	0.6084	0.03
0.85	102	-1.1083	0.8642	0.0858
0.85	114	0.8419	0.9552	0.068
0.85	186	-0.2681	0.948	0.0357
0.85	198	-0.4085	0.6953	0.0422
0.85	210	-0.4149	0.6497	0.0425
0.85	222	0.6682	0.7242	0.057
0.85	234	0.4186	0.6482	0.0427
0.85	246	-0.0612	0.5391	0.0303
0.85	258	0.6816	0.6346	0.0578
0.85	270	0.6885	0.8789	0.0582
0.95	78	0.74	0.8143	0.0615
0.95	90	-0.3786	0.7855	0.0407
0.95	186	0.3623	0.8961	0.0399
0.95	198	-0.1281	0.8296	0.0314
0.95	210	0.4925	0.8202	0.0466
0.95	222	0.0892	0.7781	0.0307
0.95	234	-0.0255	0.7241	0.0301
0.95	246	-0.3501	0.564	0.0393
0.95	258	-0.8001	0.615	0.0653
0.95	270	-1.0724	0.5939	0.0833
0.95	282	0.7181	0.653	0.0601
0.95	294	-1.5298	0.6178	0.1149