Лекции по основам кинематики элементарных процессов. Строковский Е.А. - 271 стр.

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b
b =
R
2
4
=
σ
tot
8π
ϑ
T
thresh
projectile
= M
X
+
M
X
M
targ
·
m
proj.
+
M
X
2
,M
X
= M
proj
+m
2
M
targ
.
s
thresh
=(P
proj
+ P
targ
)
2
=(M
proj
+ M
targ
+ M
X
)
2
,
M
X
s
thresh
s
thresh
= M
2
proj
+ M
2
targ
+2(T
thresh
+ M
proj
) M
targ
,
P
proj
=((T + M
proj
) , p
proj
) P
targ
=
(M
targ
, p
targ
=0)
s
thresh
t
pmeson
pp
p + Y +
t
pmeson
=(P
a
−P
meson
)
2
a
M
p
Y
M
Y
m
P
meson
=
(m, 0)
t
pmeson
=(P
a
−P
meson
)
2
=
E
2
a
m, p
a
2
=
= M
2
p
+ m
2
2E
a
· m,
b       5    9     
7      0 
                           R2
                       b=
                           4
                              =
                                σtot
                                 8π
                                                      F"+-G
   ; H  12   ” ”    0
  ϑ∗       ",!◦
5  "; \+    
                                        
                     MX               MX
 thresh
Tprojectile   = MX +       · mproj. +      , MX = Mproj +m2 −Mtarg .
                     Mtarg             2
. 1          5 12    ?
                                 2
                                                         F"+EG
      sthresh = (Pproj + Ptarg ) = (Mproj + Mtarg + MX ) ,
                                                           2


2 MX   ”C  ”0        
  1   5     /   ;  
 1    F 12 G    7 2  2  
    sthresh       
F9  1 G0     C       1 2
B1   2  ?
                     2       2
          sthresh = Mproj + Mtarg + 2 (Tthresh + Mproj ) Mtarg ,
2    C  0   Pproj = ((T + Mproj ) , pproj )  Ptarg =
(Mtarg , ptarg = 0)
                  H    1     
F"+EG  1  1   C   C 5  sthresh
       0 1   C/  2  / 1 
  1  5  
   ]+    tp→meson  12   1 pp →
p + Y + jbk`l F  FA"EGFA",GG
   . 1      50 tp→meson = (Pa − Pmeson )2 0 2   a  1
  F 1    Mp G0   Y   FC
     50      7   6  G  
 MY 0      F7        G
  m
   .          I2  B1 
    F        12 TG Pmeson =
(m, 0)0 
                                       2                  2
          tp→meson     = (Pa − Pmeson ) = Ea∗ 2 − m, p∗a       =
                       =   Mp2   +m −2
                                          2Ea∗   ·m ,              F"++G
                                         +"