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Etude de la production d'étrangeté dans les collisions d'ions lourds ultra-relativistes à 130 GeV par paire de nucléons avec l'expérience STAR au RHIC

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(1)Etude de la production d’étrangeté dans les collisions d’ions lourds ultra-relativistes à 130 GeV par paire de nucléons avec l’expérience STAR au RHIC Boris Hippolyte. To cite this version: Boris Hippolyte. Etude de la production d’étrangeté dans les collisions d’ions lourds ultra-relativistes à 130 GeV par paire de nucléons avec l’expérience STAR au RHIC. Physique Nucléaire Théorique [nucl-th]. Université Louis Pasteur - Strasbourg I, 2002. Français. �tel-00003613�. HAL Id: tel-00003613 https://tel.archives-ouvertes.fr/tel-00003613 Submitted on 22 Oct 2003. HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés..

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(204)  .   6     " #.      %     ' .

(205) %.     6   J

(206) K" &   Q  

(207)   #        '     6!        

(208) 5    <   "           %

(209)   '          $" @   

(210)       

(211)          !  " #$            6   !%    %" @     

(212)  %      *  %   .%6 &  .  7:      +5 %   

(213)  !          6   .  "                             " -   !                

(214)   .     

(215)     

(216)  6  " @      . 

(217)        6" @  Q 

(218)       %     . !          . " -  !  %   $     %         .                  %  " &         .           %       " R          %      %  

(219)                 " # Q  )           ' 

(220)        % M  $" R %  

(221)    

(222)     6   M                        6 H0" @

(223)  !                             " . !      6       %       %          %  H0" +. @        Ω−  Ω           .   !   '           

(224)  !   " @               $ ' '       6    $

(225) " -  M         %         + Ω /Ω−                          %    !   %" -            Q      !   % !     %  

(226)       " R        %  6

(227)  %       !           %   %     '".

(228) +. 6

(229)

(230) .  

(231)

(232) .    

(233)                        !        !    \-#EVY]"     '       !    (    

(234)  6

(235)    7µB  0      (     6             6:" D               

(236)    C    

(237) .         

(238) 5   

(239) 5 " # %               

(240) 5    "      !  $   

(241)               7 ""  C '    6

(242)  :           % %        % 

(243)   < gaz = 3. π2 4 π2 T  Pgaz = 3 T 4 30 90. 7&"W:.   C   7 

(244)   +#  : (      7   π −  π 0  π + :    3" qgp = 37. π2 4 π2 T + B  Pqgp = 37 T 4 − B 30 90. 7&":.     

(245) 5     7 

(246)   = - : (           % 72 × 8 + 78 × 2 × 2 × 2 × 3 = 37:     .   %        78    2    :  

(247) 5 73   2    2 %:"             %          B               "    

(248)      \.0US]

(249)          %  

(250) 5 $   " #            %            

(251)           %   6

(252)     6 R0 \.0US ]< E(R) =. . E(R0 ) =. 4π 3 C R B+   3 R 4π 3 4π 3 R B+3× R B 3 0 3 0. R0 ,. C R0. =. 4V0 B. =. 3×. 4π 3 R B 3 0. ( V0   %    

(253)   

(254)        E(R0 )  1 GeV  % R0  0, 7 f m   V0  1, 44 f m3    < B =. 1 4V0. . 174 M eV /f m3. >  %            % M    %         

(255)          '      <  Tc =. 45 17π 2. 1/4. B 1/4. . 0, 72 B 1/4. 7&"Y:. >    6  !     $     ½  !               < Tc  140 M eV " @ $ &"W .   ' 

(256)        

(257)   c = 197 M eV.f m       

(258)            M eV /f m3  M eV 4.

(259) . T4. pions. 

(260)  &"W<  

(261)    . QGP. 

(262) 

(263)  )  

(264)  ! ,  

(265)      ' -   ! 

(266)     

(267)  

(268)    . !  /. 4. Tc. −B. P. '     C    '%    6

(269)    

(270)    

(271) .       .      " E'      Tc     .        .   C         '  

(272) 5     $

(273)    !    %   %"    

(274) 

(275)

(276)     

(277) . . !    !           

(278)  7  :     M %  \O&@US]" B)        (                      '8  .        6

(279)   6!  

(280) 5                   ' .           

(281)      

(282)  6

(283)   " &   

(284)                   

(285) 5 7%  

(286)   &":      

(287)    % !" >        %   7dg :       %   7Ns : 

(288)       

(289)   &"S<  dg =. 21 16 + Ns 2. . 7&"S:. 0   

(290)   %  7   

(291)  :   Q  %    6

(292)  %   '       %" @ $ &"  %    \1>*]   %        '       6                % 

(293) 5" @       72 % ! 3 % !  2 % ! + 1  :            M    < Tc = 173 ± 8 M eV 7 %: Tc = 154 ± 8 M eV 7Y %:. 7&"T:. @ $ &"Y 

(294)       

(295)          .  M 

(296) 

(297)        % !  " @              

(298)            

(299)  

(300)   %  

(301)   %      

(302)   &"W  &"" @                     1 GeV /f m3 " I  !  

(303)     " I     % ' 

(304)       M  .      #<        ! 

(305)      

(306) 5      .  .   C 

(307)   '        "  .

(308) ,. !' - 1

(309) 7 1

(310)

(311)    

(312) . 1.0. 5 p/T. 4. pSB/T. 4. 0.8. 4. p/pSB. 0.6. 3 3 flavour 2+1 flavour 2 flavour pure gauge. 2 1. 0.4. 3 flavour 2 flavour 2+1 flavour. 0.2. pure gauge T/Tc. T [MeV] 0. 0.0 100. 200. 300. 400. 500. 600. 1.0. 1.5. 2.0. 2.5. 3.0. 3.5. 4.0. 

(313)  &"< %

(314)  

(315) 

(316) 

(317) 

(318)           .     

(319) 

(320)     !    0!  !  )  0!   

(321)   

(322) 

(323)   

(324) 

(325)     

(326) 

(327)  ) . 16.0 14.0. εSB/T4. ε/T4. 12.0 10.0 8.0 6.0. 3 flavour 2+1 flavour 2 flavour. 4.0 2.0. T/Tc. 0.0 1.0. 1.5. 2.0. 2.5. 3.0. 3.5. 4.0. 

(328)  &"Y< %

(329)  

(330)  

(331) ! 

(332) 

(333) 

(334)    1  % 

(335)  /T 4 

(336) 

(337) 

(338)  T /Tc 2            '   

(339)  

(340) . 

(341) ! 

(342)   !

(343)  

(344) 

(345)  ) .     " # Q                    %    %   !           

(346)      %     $ " I  !   

(347)     $   !" @    

(348)                M   \+0/T +0/X]

(349) 

(350)       %      %          $ &""   Q   %     <      

(351)    

(352) 5 s %                7Y

(353) 5 :    !   7

(354) 5  u  d:"     

(355)       6     Q        J^WK

(356)  %                       " - N     .   C 

(357)      . .

(358) .. !       %   " 0    Q  C        7      

(359) .      .    6        :     %          $  \+0/T]" @

(360)     L        %7:   

(361) 5 < qq >       Q % 

(362) 5 %   " @ 

(363)    %      % .   6 .     @    < 1 a µν Lqcd = iψγ µ (∂µ − igAµ )ψ − mψψ − Fµν F      4   a   1.. 2.. 7&"X:. 3.. W"      

(364)     

(365) 5 ψ         .     '        Aµ _ "          

(366) 5_ Y"       

(367)               

(368) " -                 (     

(369) 5  u d  s  .    6     " >      .        % 

(370) 5     7   .        

(371)   %          %  6   : .    &"X" -     mi  0 7i = u, d, s:          SU (3)< 

(372) 5 !   ψD         7           

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