analyse de e+ e- --> tau+ tau-

version - 6 mai 2002

plot.2.ius

Dans ce texte nous n'envisagerons que le cas (outre 2 neutrini) où l'un des taus se désintègre en 3 corps chargés (tau_A) et l'autre (tau_B) en une particule chargée unique.

Ici on utilise le fichier "p31n" (simulation-babar - octobre 2001), pour représenter quelques histogrammes.

Coordonnees en cm.

date : Tue Apr 9 13:25:12 CEST 2002
Arg data : 0 /afs/in2p3.fr/home/l/leruste/public/AA7/pa1.aa
lieu : MM0
kphyst : 33

Temps de vie - voie A, 3corps

ci-dessus histo 10 x=TVA.sim y=TVA.rec
ci-dessus histo 11 tVA.sim
ci-dessus histo 12 tVA.rec
ci-dessus histo 14 tVA.rec-.sim; x=tVA.sim
L'histo 14 caractérise l'offset dans la reconstruction des événements (coordonnées en microns). Quoiqu'il y paraisse, la forme de cet histo 14 est similaire à celle de la simulation-Jussieu (item précédent) au premier bin près, why ?
  
1tVB.sim                                                                         
 
 HBOOK     ID =        21                                        DATE  12/04/2002            NO =     6
 
      520       *
      500       I-
      480       I*
      460       II*
      440       II *
      420       II---
      400       I   * -
      380       I   I*I
      360       I     *-
      340       I      *
      320       I      I*
      300       I       I**
      280       I       I--*
      260       I         I-*-
      240       I          I-**
      220       I             I**
      200       I              I-*
      180       I                I**-  -
      160       I                   ***I
      140       I                      **- -
      120       I                        ****-
      100       I                          I-***
       80       I                              I******--
       60       I                                     *******--
       40       I                                            ************
       20       I                                                    I---**********************
 
 CHANNELS  10   0        1         2         3         4         5         6         7            
            1   1234567890123456789012345678901234567890123456789012345678901234567890123456789   
 
 CONTENTS 100   5444433332222222111111111111 1                                                 
           10   18011785077534318977644632129188767666664454444334322211211111111 111 111   1  
            1.  4743271770469429215536141282205257445725530522373037229705899775342025402788146
 
 LOW-EDGE   1.                     111111111111111111112222222222222222222233333333333333333333
 *10**  2   0   0112233445566778899001122334455667788990011223344556677889900112233445566778899
            0   5050505050505050505050505050505050505050505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.8960E+04      * UNDERFLOW = 0.8370E+03      * OVERFLOW = 0.1080E+03
 * BIN WID = 0.5000E-03      * MEAN VALUE   = 0.8894E-02      * R . M . S = 0.7749E-02      * NEQUIVAL = 0.8960E+04
 * CHISQUAR  =  0.7200E+02
 ci-dessus histo            21    tVB.sim                $
  
      chi2b :  0.9351E+00
      rparb :  0.6302E+01 -0.1147E+03
1tVB.rec                                                                         
 
 HBOOK     ID =        22                                        DATE  12/04/2002            NO =     7
 
      920                             -
      900                             I
      880                             I
      860                            -I
      840                            II
      820                           -II-
      800                           I  I
      780                           I  I
      760                           I  I
      740                           I  I
      720                           I  I
      700                           I  I
      680                           I  I-
      660                           I   I
      640                           I   I
      620                           I   I
      600                           I   I
      580                           I   I
      560                           I   I
      540                          -I   I-
      520                          I     I
      500                          I     I
      480                          I     I-
      460                          I      I
      440                          I      I
      420                         -I      I
      400                         I       I
      380                         I       I
      360                         I       I-
      340                        -I        I
      320                        I         I
      300                        I         I
      280                        I         I-
      260                        I          I
      240                        I          I-
      220                        I           I
      200                       -I           I
      180                      -I            I--
      160                      I               I-
      140                     -I                I
      120                     I                 I
      100                   --I                 I--
       80                   I                     I-
       60                ---I                      I--
       40           -----I                           I---   -
       20       ----I                                   I---I---------------
 
 CHANNELS  10   0        1         2         3         4         5         6   
            1   123456789012345678901234567890123456789012345678901234567890   
 
 CONTENTS 100                 1113458898654322111                           
           10   1111222334558828930305117375727749875532211121 11     1     
            1.  355657558312276070665808911739562614164539773593688844134764
 
 LOW-EDGE       --------------------                                        
 *10**  2   1.  54444333322221111       111122223333444455556666777788889999
            0   075207520752075207520257025702570257025702570257025702570257
            0   050505050505050505050505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.9359E+04      * UNDERFLOW = 0.2770E+03      * OVERFLOW = 0.2690E+03
 * BIN WID = 0.2500E-02      * MEAN VALUE   = 0.8469E-02      * R . M . S = 0.1709E-01      * NEQUIVAL = 0.9359E+04
 ci-dessus histo            22    tVB.rec                $
  
1tVB.rec -tvB.sim                                                                
 
 HBOOK     ID =        23                                        DATE  12/04/2002            NO =     8
 
     2250                                    --
     2200                                    II
     2150                                    II
     2100                                    II
     2050                                    II
     2000                                    II
     1950                                    II
     1900                                    II
     1850                                    II
     1800                                    II
     1750                                    II
     1700                                    II
     1650                                    II
     1600                                    II
     1550                                    II
     1500                                    II
     1450                                    II
     1400                                    II
     1350                                    II
     1300                                    II
     1250                                    II
     1200                                    II
     1150                                   -II-
     1100                                   I  I
     1050                                   I  I
     1000                                   I  I
      950                                   I  I
      900                                   I  I
      850                                   I  I
      800                                   I  I
      750                                   I  I
      700                                   I  I
      650                                   I  I
      600                                   I  I
      550                                  -I  I
      500                                  I   I-
      450                                  I    I
      400                                  I    I
      350                                  I    I
      300                                 -I    I
      250                                 I     I-
      200                                -I      I
      150                               -I       I--
      100                             --I          I-
       50       ----------------------I             I-----------------------
 
 CHANNELS  10   0        1         2         3         4         5         6   
            1   123456789012345678901234567890123456789012345678901234567890   
 
 CONTENTS1000                               1221                            
          100                           112512214211                        
           10              11111122234883892303282016432222111  1 1 1 1     
            1.  444936383566139683577253829743177972200705093296467737175875
 
 LOW-EDGE       ------------------------------                              
 *10**  1   1.  11111111111                                       1111111111
            0   544332211009988776655443322110001122334455667788990011223344
            0   050505050505050505050505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.9636E+04      * UNDERFLOW = 0.1020E+03      * OVERFLOW = 0.1670E+03
 * BIN WID = 0.5000E-02      * MEAN VALUE   =-0.5509E-03      * R . M . S = 0.2296E-01      * NEQUIVAL = 0.9636E+04
 ci-dessus histo            23    tVB.rec -tvB.sim       $
  
1tVB.rec-.sim; x=tVB.sim                                                         
 
 HBOOK     ID =        24                                        DATE  12/04/2002            NO =     9
 
        5.2     -
        5       I
        4.8     I
        4.6     I
        4.4     I
        4.2     I
        4       I
        3.8     I
        3.6     I
        3.4     I
        3.2     I
        3       I
        2.8     I    -
        2.6     I    I
        2.4     I    I
        2.2     I    I
        2       I    I  -
        1.8     I -  I  I
        1.6     I I  I  I  -
        1.4     I I  I  I  I        -
        1.2     I I -I  I  I - -    I
        1       I-I II- I  I I I -  I       -
         .8     I I I I I  I-I I I  I   -   I       -
         .6     I I I I I  I I I I  I   I   I  -   -I
         .4     I I I I I -I I-I-I  I-  I - I  I   II
         .2     I I-I I I I      I  II -I I I  I-  II
                       I I        II  I  I I II  II  I I
    -    .2            I I        I-  -  I I II  --  I I
    -    .4            I I        -      I - II      I I
    -    .6            - I               -   I-      -II
    -    .8              I                   -        --
    -   1                I
    -   1.2              I
    -   1.4              -
 
 CHANNELS  10   0        1         2         3         4   
            1   1234567890123456789012345678901234567890   
 
 CONTENTS              - -        --  -  - - --  --  ---
            1.  5 1 12  11 1 1 1    1                   
            0   0861179593246020292032007522965411156567
            0   7788127096128068733003845456687284652588
            0   0448879555771372856695827858635207545711
            0   0931051093463132725920599759049201164662
 
 LOW-EDGE   1.                      11111111111111111111
 *10**  2   0   0011223344556677889900112233445566778899
            0   0505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.1927E+02      * UNDERFLOW = 0.0000E+00      * OVERFLOW = 0.1832E+00
 * BIN WID = 0.5000E-03      * MEAN VALUE   = 0.6026E-02      * R . M . S = 0.5328E-02      * NEQUIVAL = 0.1163E+04
 ci-dessus histo            24    tVB.rec-.sim; x=tVB.sim$
  

Temps de vie - voie B, 1corps


1tVB.sim                                                                         
 
 HBOOK     ID =        21                                        DATE  12/04/2002            NO =     6
 
      520       *
      500       I-
      480       I*
      460       II*
      440       II *
      420       II---
      400       I   * -
      380       I   I*I
      360       I     *-
      340       I      *
      320       I      I*
      300       I       I**
      280       I       I--*
      260       I         I-*-
      240       I          I-**
      220       I             I**
      200       I              I-*
      180       I                I**-  -
      160       I                   ***I
      140       I                      **- -
      120       I                        ****-
      100       I                          I-***
       80       I                              I******--
       60       I                                     *******--
       40       I                                            ************
       20       I                                                    I---**********************
 
 CHANNELS  10   0        1         2         3         4         5         6         7            
            1   1234567890123456789012345678901234567890123456789012345678901234567890123456789   
 
 CONTENTS 100   5444433332222222111111111111 1                                                 
           10   18011785077534318977644632129188767666664454444334322211211111111 111 111   1  
            1.  4743271770469429215536141282205257445725530522373037229705899775342025402788146
 
 LOW-EDGE   1.                     111111111111111111112222222222222222222233333333333333333333
 *10**  2   0   0112233445566778899001122334455667788990011223344556677889900112233445566778899
            0   5050505050505050505050505050505050505050505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.8960E+04      * UNDERFLOW = 0.8370E+03      * OVERFLOW = 0.1080E+03
 * BIN WID = 0.5000E-03      * MEAN VALUE   = 0.8894E-02      * R . M . S = 0.7749E-02      * NEQUIVAL = 0.8960E+04
 * CHISQUAR  =  0.7200E+02
 ci-dessus histo            21    tVB.sim                $
  
      chi2b :  0.9351E+00
      rparb :  0.6302E+01 -0.1147E+03
1tVB.rec                                                                         
 
 HBOOK     ID =        22                                        DATE  12/04/2002            NO =     7
 
      920                             -
      900                             I
      880                             I
      860                            -I
      840                            II
      820                           -II-
      800                           I  I
      780                           I  I
      760                           I  I
      740                           I  I
      720                           I  I
      700                           I  I
      680                           I  I-
      660                           I   I
      640                           I   I
      620                           I   I
      600                           I   I
      580                           I   I
      560                           I   I
      540                          -I   I-
      520                          I     I
      500                          I     I
      480                          I     I-
      460                          I      I
      440                          I      I
      420                         -I      I
      400                         I       I
      380                         I       I
      360                         I       I-
      340                        -I        I
      320                        I         I
      300                        I         I
      280                        I         I-
      260                        I          I
      240                        I          I-
      220                        I           I
      200                       -I           I
      180                      -I            I--
      160                      I               I-
      140                     -I                I
      120                     I                 I
      100                   --I                 I--
       80                   I                     I-
       60                ---I                      I--
       40           -----I                           I---   -
       20       ----I                                   I---I---------------
 
 CHANNELS  10   0        1         2         3         4         5         6   
            1   123456789012345678901234567890123456789012345678901234567890   
 
 CONTENTS 100                 1113458898654322111                           
           10   1111222334558828930305117375727749875532211121 11     1     
            1.  355657558312276070665808911739562614164539773593688844134764
 
 LOW-EDGE       --------------------                                        
 *10**  2   1.  54444333322221111       111122223333444455556666777788889999
            0   075207520752075207520257025702570257025702570257025702570257
            0   050505050505050505050505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.9359E+04      * UNDERFLOW = 0.2770E+03      * OVERFLOW = 0.2690E+03
 * BIN WID = 0.2500E-02      * MEAN VALUE   = 0.8469E-02      * R . M . S = 0.1709E-01      * NEQUIVAL = 0.9359E+04
 ci-dessus histo            22    tVB.rec                $
  
1tVB.rec -tvB.sim                                                                
 
 HBOOK     ID =        23                                        DATE  12/04/2002            NO =     8
 
     2250                                    --
     2200                                    II
     2150                                    II
     2100                                    II
     2050                                    II
     2000                                    II
     1950                                    II
     1900                                    II
     1850                                    II
     1800                                    II
     1750                                    II
     1700                                    II
     1650                                    II
     1600                                    II
     1550                                    II
     1500                                    II
     1450                                    II
     1400                                    II
     1350                                    II
     1300                                    II
     1250                                    II
     1200                                    II
     1150                                   -II-
     1100                                   I  I
     1050                                   I  I
     1000                                   I  I
      950                                   I  I
      900                                   I  I
      850                                   I  I
      800                                   I  I
      750                                   I  I
      700                                   I  I
      650                                   I  I
      600                                   I  I
      550                                  -I  I
      500                                  I   I-
      450                                  I    I
      400                                  I    I
      350                                  I    I
      300                                 -I    I
      250                                 I     I-
      200                                -I      I
      150                               -I       I--
      100                             --I          I-
       50       ----------------------I             I-----------------------
 
 CHANNELS  10   0        1         2         3         4         5         6   
            1   123456789012345678901234567890123456789012345678901234567890   
 
 CONTENTS1000                               1221                            
          100                           112512214211                        
           10              11111122234883892303282016432222111  1 1 1 1     
            1.  444936383566139683577253829743177972200705093296467737175875
 
 LOW-EDGE       ------------------------------                              
 *10**  1   1.  11111111111                                       1111111111
            0   544332211009988776655443322110001122334455667788990011223344
            0   050505050505050505050505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.9636E+04      * UNDERFLOW = 0.1020E+03      * OVERFLOW = 0.1670E+03
 * BIN WID = 0.5000E-02      * MEAN VALUE   =-0.5509E-03      * R . M . S = 0.2296E-01      * NEQUIVAL = 0.9636E+04
 ci-dessus histo            23    tVB.rec -tvB.sim       $
  
1tVB.rec-.sim; x=tVB.sim                                                         
 
 HBOOK     ID =        24                                        DATE  12/04/2002            NO =     9
 
        5.2     -
        5       I
        4.8     I
        4.6     I
        4.4     I
        4.2     I
        4       I
        3.8     I
        3.6     I
        3.4     I
        3.2     I
        3       I
        2.8     I    -
        2.6     I    I
        2.4     I    I
        2.2     I    I
        2       I    I  -
        1.8     I -  I  I
        1.6     I I  I  I  -
        1.4     I I  I  I  I        -
        1.2     I I -I  I  I - -    I
        1       I-I II- I  I I I -  I       -
         .8     I I I I I  I-I I I  I   -   I       -
         .6     I I I I I  I I I I  I   I   I  -   -I
         .4     I I I I I -I I-I-I  I-  I - I  I   II
         .2     I I-I I I I      I  II -I I I  I-  II
                       I I        II  I  I I II  II  I I
    -    .2            I I        I-  -  I I II  --  I I
    -    .4            I I        -      I - II      I I
    -    .6            - I               -   I-      -II
    -    .8              I                   -        --
    -   1                I
    -   1.2              I
    -   1.4              -
 
 CHANNELS  10   0        1         2         3         4   
            1   1234567890123456789012345678901234567890   
 
 CONTENTS              - -        --  -  - - --  --  ---
            1.  5 1 12  11 1 1 1    1                   
            0   0861179593246020292032007522965411156567
            0   7788127096128068733003845456687284652588
            0   0448879555771372856695827858635207545711
            0   0931051093463132725920599759049201164662
 
 LOW-EDGE   1.                      11111111111111111111
 *10**  2   0   0011223344556677889900112233445566778899
            0   0505050505050505050505050505050505050505
 
 * ENTRIES =       9905      * ALL CHANNELS = 0.1927E+02      * UNDERFLOW = 0.0000E+00      * OVERFLOW = 0.1832E+00
 * BIN WID = 0.5000E-03      * MEAN VALUE   = 0.6026E-02      * R . M . S = 0.5328E-02      * NEQUIVAL = 0.1163E+04
 ci-dessus histo            24    tVB.rec-.sim; x=tVB.sim$

Temps de vie - voie A et B


Chi2

ci-dessus histo 413 chi2
ci-dessus histo 414 PROB(chi2)
L'histo 413 laisse apparaitre une moyenne de 3.1, pour 3.0 théorique.
L'histo 414 n'est pas un créneau constant entre 0. et 1.. A noter le grand pic pour les probabilités nulles, et une montée linéaire vers des probabilités de 0. à 1.,

Références


Comparez à l'tem 4 "simulation-Jussieü