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Measurement E151M3561

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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: ALU,
Beam asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π+n, polarization: none

Q2 : 0.4155 GeV2
W : 1655 GeV
ε : 0.848
Ebeam : 2.999 GeV
εL: 0.2399 

Select data slice:
cos(θπ+) =
Observable quantity measured (Y axis): ALU,
Plot measurement data

Parameter (X axis): φ(π+), degrees

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θπ+) φ(π+),
degrees 		ALU Stat. error Syst. error
0.55 90 0.0144 0.2479 0.03
0.65 66 -0.1915 0.28 0.0302
0.65 90 -0.0222 0.2674 0.03
0.65 102 -0.5038 0.2384 0.0316
0.65 114 -0.0411 0.2291 0.03
0.65 306 -0.0739 0.2537 0.03
0.75 66 0.0422 0.2555 0.03
0.75 78 0.353 0.2069 0.0308
0.75 102 -0.3864 0.2254 0.031
0.75 114 -0.2735 0.2226 0.0305
0.75 198 -0.3119 0.2642 0.0306
0.75 246 -0.117 0.2614 0.0301
0.85 66 -0.0463 0.2235 0.03
0.85 78 0.5754 0.1877 0.0321
0.85 90 -0.1594 0.2483 0.0302
0.85 186 -0.1265 0.2706 0.0301
0.85 198 -0.2932 0.247 0.0306
0.85 210 -0.0832 0.2063 0.03
0.85 222 0.3256 0.2303 0.0307
0.85 234 -0.3862 0.1957 0.031
0.85 246 -0.5731 0.1805 0.0321
0.85 258 0.2645 0.1933 0.0305
0.85 270 0.1704 0.2158 0.0302
0.85 282 0.075 0.2454 0.03
0.95 198 -0.1252 0.2583 0.0301
0.95 210 -0.5939 0.2298 0.0323
0.95 222 0.2377 0.2418 0.0304
0.95 234 -0.0799 0.265 0.03
0.95 246 -0.1861 0.2046 0.0302
0.95 258 -0.2143 0.2242 0.0303
0.95 270 0.0533 0.2187 0.03
0.95 282 -0.5005 0.2275 0.0316
0.95 294 0.0297 0.2242 0.03
0.95 306 -0.2719 0.234 0.0305