Лекции по основам кинематики элементарных процессов. Строковский Е.А. - 272 стр.

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E
a
p
a
2E
a
s
s E
a
=
s/2
E
a
=
1
2
s =
1
2
(M
p
+ M
Y
+ m) .
t
pmeson
= M
2
p
·
1
m
M
p
1+
M
Y
M
p

.
Y
E
thresh
γ
β
cm
E
thresh
γ
φ
φ
M = m
E
thr
γ
= M ·
1+
M
2m
.
β
cm
=
p
tot
E
tot
cm
=
E
tot
M
tot
,
E
tot
= E
γ
+ m
M
tot
s p
tot
= p
γ
+ p
targ
= p
γ
2 Ea∗  7 2 1 2 1       0 pa  2
1  F  C   0   G .    
   5   1     0  1 
7 2        0   0 2Ea∗  8 C 0  
2  0
       √     2  1 √ 5     1   
s0   s0   0 Ea∗ = s/2 .       
 12 0 
                         1√    1
                 Ea∗ =      s = (Mp + MY + m) .
                         2     2
.    1   C    F"++G0 1   
9  2      1/     ?
                                               
                                     m        MY
             tp→meson =   Mp2   · 1−       1+       .
                                     Mp       Mp
        2 0        
    B1  0 1  /  1 ”1  1  N 
  1 ”   ”1  1  N  Y ”
5  ; #  1   1   ? "G 1  1 
      12      7 25   Eγthresh 
     12      O G  
  βcm       1 Eγthresh O AG  7 25 
1  C 2 φ       0   
 1   10 1     1   
   1  φ  .    1 1  2
1   0   1    1              2
1    5 
5  #;
        C 0   1  9    +0    0  
M = m0      0   12  7 2            
                                       
                                     M
                     Eγthr = M · 1 +      .
                                     2m
    C 1     9 
                            p tot         Etot
                    βcm =         , γcm =      ,
                            Etot          Mtot
2   Etot = Eγ + m   1    7 20 1 
  1/   0 Mtot√   1     F
 Z9 G0   0 1  s0  p tot = pγ + ptarg = pγ  
                                    +