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Lambda PH values for different alpha

Updated on Sun, 2022-04-03 00:46. Originally created by taknn on 2021-12-15 00:15.

Rescaled polarization values obtained by PH*alpha_old/alpha_new are shown here. See this page for comparison between two alpha=0.647 vs 0.62: 
https://drupal.star.bnl.gov/STAR/blog/taknn/issue-lambda-decay-parameter

Note that significant digit is not considered here.

 

// Lambda global polarization from BES-1 paper


Alpha_Lambda = -Alpha_antiLambda = 0.647 (originally published values)
rootS     PH                  stat.           syst.low  syst.high
Lambda
7.7    2.03922   +- 0.628254 - 0.20 + 0.0
11.5  1.34356   +- 0.395796 - 0.20 + 0.0
14.6  1.32071   +- 0.481546 - 0.30 + 0.0
19.6  0.950382 +- 0.305166 - 0.20 + 0.0
27     1.04722   +- 0.28208   - 0.20 + 0.0
39     0.506326 +- 0.423624 - 0.20 + 0.0

Anti-Lambda

7.7    8.6691     +- 3.56897   - 1.00 + 0.0
11.5  1.80167   +- 1.26119   - 0.15 + 0.0
14.6  2.27599   +- 1.20993   - 0.15 + 0.4
19.6  1.51528   +- 0.610072 - 0.15 + 0.0
27     1.24525   +- 0.471465 - 0.15 + 0.0
39     0.938276 +- 0.61503   - 0.15 + 0.0

 

Alpha_Lambda = -Alpha_antiLambda = 0.732
Lambda
rootS     PH        stat.           syst.low  syst.high
7.7   1.80243    0.555301  0.176776  0.0
11.5 1.18755    0.349836  0.176776  0.0
14.6 1.16735    0.425629  0.265164  0.0
19.6 0.840023  0.26973    0.176776  0.0
27    0.925617  0.249325  0.176776  0.0
39    0.447531  0.374433  0.176776  0.0

Anti-Lambda
7.7   7.66244   3.15454    0.88388    0.0
11.5 1.59246   1.11474    0.132582  0.0
14.6 2.0117     1.06943    0.132582  0.353552
19.6 1.33933   0.53923    0.132582  0.0
27    1.10065   0.416718  0.132582  0.0
39    0.829323 0.543613  0.132582  0.0

 
Alpha_antiLambda = -0.758
Anti-Lambda
7.7   7.39961   3.04634    0.853562  0.0
11.5 1.53784   1.0765      0.128034  0.0
14.6 1.9427     1.03275    0.128034  0.341425
19.6 1.29339   0.520734  0.128034  0.0
27    1.0629     0.402425  0.128034  0.0
39    0.800877 0.524966  0.128034  0.0

 
Alpha_Lambda = -Alpha_antiLambda = 0.642
Lambda
7.7   2.0551     0.633147 0.201558 0
11.5 1.35402   0.398879 0.201558 0
14.6 1.331       0.485296 0.302336 0
19.6 0.957784 0.307543 0.201558 0
27    1.05538   0.284277 0.201558 0
39    0.510269 0.426923 0.201558 0

anti-Lambda
7.7   8.73662   3.59677   1.00779   0
11.5 1.8157     1.27101   0.151168 0
14.6 2.29372   1.21935   0.151168 0.403115
19.6 1.52708   0.614823 0.151168 0
27    1.25495   0.475137 0.151168 0
39    0.945583 0.61982   0.151168 0

 
// 62.4 GeV from 2007 paper

Alpha_Lambda = -Alpha_antiLambda = 0.732
particle     PH   statE
Lambda        1.16993 1.02376
antiLambda  1.50137 1.39617

 
Alpha_antiLambda = -0.758
antiLambda  1.44987 1.34828

 
 
// 200 GeV from 2019 paper

Alpha_Lambda = -Alpha_antiLambda = 0.732
rootS           PH            stat.           syst.low      syst.high
Lambda       0.243324 0.0352579 0.0427733 0.0342452
antiLambda 0.210056 0.0393624 0.0397753 0.0532085

 
Alpha_antiLambda = -0.758
antiLambda 0.202851 0.0380122 0.038411   0.0513834 

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