CLAS Physics Database

JLab | Search | Overview | Login | Edit | Register

Measurement E151M481

You are not logged in.

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

Q2 : 0.1715 GeV2
W : 1235 GeV
ε : 0.9441
Ebeam : 1.9889 GeV
εL: 0.8557 

Select data slice:
cos(θπ+) =
Observable quantity measured (Y axis): AUL,
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 		AUL Data errors Systematic errors
0.35 66 -0.0945 0.551 0.0306
0.35 78 -0.0411 0.5731 0.0301
0.45 66 -0.2848 0.516 0.0347
0.45 78 0.2064 0.5803 0.0325
0.45 282 0.1002 0.5603 0.0306
0.55 78 0.3752 0.6127 0.0378
0.55 270 -0.1139 0.4747 0.0308
0.55 282 -0.2771 0.4066 0.0345
0.55 294 0.73 0.5955 0.0538
0.65 270 0.4438 0.4286 0.0405
0.65 282 0.0488 0.3929 0.0301
0.75 90 -0.1456 0.5006 0.0313
0.75 102 0.2924 0.519 0.0349
0.75 246 -0.2444 0.5012 0.0335
0.75 258 0.0597 0.432 0.0302
0.75 270 -0.2143 0.3743 0.0327
0.75 282 0.3913 0.4333 0.0384
0.75 294 0.0841 0.5488 0.0304
0.85 78 0.4274 0.4716 0.0398
0.85 90 0.07 0.4303 0.0303
0.85 102 0.2576 0.3873 0.0339
0.85 114 0.5021 0.4647 0.0429
0.85 126 0.5989 0.578 0.0473
0.85 258 0.0711 0.5096 0.0303
0.85 270 -0.1113 0.4 0.0308
0.85 282 0.0917 0.4645 0.0305
0.95 78 0.0639 0.4083 0.0303
0.95 90 1.0699 0.4101 0.072
0.95 102 0.0388 0.4128 0.0301
0.95 126 -0.1992 0.3972 0.0324
0.95 150 0.4225 0.462 0.0396
0.95 162 0.2184 0.3817 0.0328
0.95 174 -0.5913 0.4201 0.047
0.95 186 0.2505 0.4706 0.0337
0.95 270 -0.0797 0.4744 0.0304