22. , c(1S) (1S) +1 -1.
- C = (-1)L(-1)J, L - , J - () . c(1S) (1S) (c ) ( 1S), c(1S) 0, (1S) 1. , .
23. : , , , , ?
( , ).
.
,
- , - - .
.
, t -t , ,
t -t, - .
, :
- .
, , .
24. , h .
h
,
- , - . , ( ) . , , , .
25. + - . , + - . C-, P-, CP-, T- CPT- .
:
(*) |
C- . . C- (*)
C: |
C- - .
P- , . P- (*)
P: |
P- - .
CP- , . CP- (*)
CP: |
C P - , .
T- ,
|
|
.
T- (*)
T: |
T- .
CPT- , , . CPT- (*)
CPT: |
CPT-, , CPT- , , , . CPT-.
CPT- , .
26. sin2 W = 0.226 + 0.005 gW e.
: e - , gW - , W - . sin2 W = 0.226. .
27. , , , , , ?
- - TEVATRON ( . , ) 1 . W- = 1 l = v, - W-
W- 0 /, - W-, 2.1 .
.. W- (mc2 = 80 ) (E = 1 ).
l = 3.1 10-25 x 3 1010 / x (1000 /80 ) 10-13 1 .
, ( 10 ), .
28. L t , (1956 - 1959 ..), 10-43 2.
n p + e- + e.
,
N(x) = N(0) exp(-n x),
n - .
L , , L = 1/ns. n = NA /A, NA - , - , - . = 1 /3, (2) = 18.
L = 1/ns = A/ NA = 18/(1 /3 x 6 1023 x 10-43 2) = 3 1020 = 3 1015 .
t = L / = 3 1015 / 3 105 / = 1010 320 (1 3.156 107 ).
29. .
|
|
- , e. u, d e-. e d-,
d u + e- + e, n p + e- + e:
e u- :
e d- W- ( ). e d-, Z-.
e u- .
30. Z .
W Z : mW 80 /c2, mZ 90 /c2. aW W Z :
(*), |
E t . , E = mW c2 mZ c2
t < / E /mW c2 /mZ c2.
(*). mW mZ 100 /c2,
aW 0.2 /100 = 2 10-3 .
31. , , +. , .
+
mp = 938,3 /c2, = 1232 /c2 - JP(p) = 1/2+, JP( +) = 3/2+. ( ):
;
; |
J = 1 2, = +1. , 1 2-.
= c2 - mpc2 = (1232 - 938) 300 .
32. "" ?
+. u u d . d- u-, + : p = u u d ( ), + = u u d ( ). + , d-, "" . + 300 , "" 300 .
33. u d- , , 1/3 .
1/2, m q
.
, u d- :
- .
34. - (t) () t - , ( ) (b )?
, , 1 ( ),
10-13 / 3 1010 / 10-23 10-24 .
- t 2 , -
t t / 6.6 10-22 / 2 103 = 3,3 10-25 ,
, t .
35. , JP = 1/2+ : .
( )
(1,2,3) = ( ) (r1 r2 r3) (s1 s2 s3) (I1 I2 I3) | (*) |
1, 2, 3 - , - ( - , - , - ), , . (1, 2, 3) ( u d , ). , , (s), (a). ( ) , . l = 0 (r1 r2 r3) - . (*)
|
|
a(1, 2, 3) = a( ) s(r1 r2 r3) (s1 s2 s3) (I1 I2 I3) | (**) |
, (, JP = 1/2+ JP = 3/2+) , , , -
s(s1 s2 s3) s(I1 I2 I3), a(s1 s2 s3) a(I1 I2 I3).