Лекции по основам кинематики элементарных процессов. Строковский Е.А. - 52 стр.

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s (P
init
)
2
=(P
final
)
2
.
n
M
2
eff
= P
2
=
n
i=1
P
i
2
=
=
n
i=1
E
i
2
n
i=1
p
i
2
n
i=1
m
i
2
,
m
i
n
s M
2
eff
b(a, c)dX
s s
min
max
(m
a
+ m
b
)
2
, (m
c
+ m
d
+ M
X
)
2
,
s
min
s
a
T
thresh
= E
thresh
m
a
T
E
E = T + m
2 3
pp pp+ meson
T
thresh
t
;   C 0      1  7 2      0
                        2            2
                   s ≡ (Pinit ) = (Pf inal ) .           FA""G
         F7  C   1    G
          / F1 0 nG     1 
  F C C 1  G 1   " 0 1 
   
                            n         2
                            
       2
      Mef f   =P   2
                       =          Pi        =                                                   FA" G
                            i=1
                            n         2                     2                     2
                                                   
                                                    n                       
                                                                            n
                       =          Ei        −             pi        ≥             mi        ,
                            i=1                     i=1                     i=1

2 mi N  7 /     n        2
F   2G  0  s  Mef2 f  1 5 
       9  FA" G   0       
  b(a, c)dX F FA"GG
                                                 
                              2
     s ≥ smin ≡ max (ma + mb ) , (mc + md + MX )
                                                2
                                                    ,      FA"AG
2 smin N                s0 1    
 FA"G 6  9   /  7 21  8
     1  !  FA"G <0    
 C  12   7 2   F     
  aG  C     9   2  0   
2  1      FA"AG >  7 2    !
" ! "O  1 7   5          5 7 25
Tthresh = Ethresh − ma  10     T  
1       7 20    E N  1 
7 2 E = T + m F     2   1  G
                         !;
   H       2 → 3 F A"G
    0  1 0  125  5 1 1 2
   C    0    5 pp → pp + meson0  
    12 5   5 7 25 Tthresh 1 
 C  t  12 0     1   B1  
  F^_`ab:cdebG          1   2
 
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