CLAS Physics Database

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Measurement E151M1400

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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 :	0.0707 GeV²
W :	1445 GeV
ε :	0.5838
E_beam :	1.0539 GeV
ε_L:	0.089

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	-0.7645	0.9258	0.0913
0.25	54	-0.3714	0.967	0.0515
0.35	42	1.052	0.8085	0.1224
0.45	30	1.7532	0.8403	0.2
0.45	42	0.3673	0.8419	0.0511
0.45	54	-0.0286	0.9004	0.0302
0.45	234	-0.2439	0.8548	0.0407
0.45	258	-0.26	0.9032	0.042
0.55	222	-1.803	0.7077	0.2056
0.55	234	0.9241	0.6456	0.1085
0.55	246	-0.564	0.6767	0.0703
0.55	258	0.312	0.8096	0.0462
0.55	270	-0.0141	0.864	0.03
0.65	150	1.9749	0.7261	0.2248
0.65	162	1.0008	0.8848	0.1168
0.65	222	0.5691	0.7838	0.0709
0.65	234	0.1348	0.7514	0.0336
0.65	246	-1.1364	0.6638	0.1316
0.65	258	0.7551	0.6866	0.0903
0.65	270	-0.9338	0.8037	0.1095
0.75	138	-1.2046	0.7769	0.1391
0.75	174	-0.3149	0.8783	0.0465
0.75	222	-1.0917	0.7759	0.1267
0.75	234	0.0593	0.7329	0.0307
0.75	246	-0.6932	0.5535	0.0837
0.75	258	-0.2336	0.6518	0.0399
0.75	270	0.5668	0.7207	0.0706
0.85	234	-0.4942	0.7531	0.0633
0.85	246	-0.3378	0.6045	0.0485
0.85	258	-0.1622	0.5464	0.0351
0.85	270	1.4384	0.5763	0.165
0.95	138	1.2328	0.6637	0.1422