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Measurement E151M2941

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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 : 0.2445 GeV2
W : 1265 GeV
ε : 0.9187
Ebeam : 1.9889 GeV
εL: 0.8506 

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
0.25 66 0.3947 0.2454 0.031
0.35 66 0.1845 0.266 0.0302
0.55 270 -0.1522 0.2511 0.0302
0.55 282 0.1149 0.266 0.0301
0.65 270 0.1161 0.2653 0.0301
0.65 282 -0.2026 0.2173 0.0303
0.65 294 0.1114 0.2073 0.0301
0.75 78 0.1122 0.257 0.0301
0.75 90 -0.415 0.2057 0.0311
0.75 102 -0.2673 0.2514 0.0305
0.75 246 -0.2853 0.2572 0.0305
0.75 258 -0.3627 0.2222 0.0309
0.75 270 -0.0118 0.1822 0.03
0.75 282 -0.1291 0.2265 0.0301
0.75 294 -0.1992 0.2547 0.0303
0.85 78 -0.0762 0.2051 0.03
0.85 90 -0.1287 0.252 0.0301
0.85 102 0.3142 0.1898 0.0307
0.85 114 -0.1491 0.1876 0.0301
0.85 126 -0.195 0.2415 0.0303
0.85 246 -0.0533 0.2382 0.03
0.85 258 -0.0597 0.2324 0.03
0.85 270 0.4401 0.2285 0.0313
0.85 282 -0.1637 0.2369 0.0302
0.85 294 0.2901 0.2153 0.0306
0.95 78 0.1611 0.2471 0.0302
0.95 90 -0.3488 0.258 0.0308
0.95 102 0.274 0.2142 0.0305
0.95 114 0.2218 0.2563 0.0303
0.95 126 0.6982 0.1878 0.0331
0.95 138 -0.2366 0.24 0.0304
0.95 270 -0.0718 0.2728 0.03
0.95 282 -0.0647 0.2366 0.03
0.95 294 -0.231 0.2096 0.0304