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fe4da5cc | 1 | * |
2 | * $Id$ | |
3 | * | |
4 | * $Log$ | |
5 | * Revision 1.1.1.1 1995/10/24 10:21:26 cernlib | |
6 | * Geant | |
7 | * | |
8 | * | |
9 | #include "geant321/pilot.h" | |
10 | *CMZ : 3.21/02 29/03/94 15.41.22 by S.Giani | |
11 | *-- Author : | |
12 | SUBROUTINE GLOREN(BETA,PA,PB) | |
13 | C. | |
14 | C. ****************************************************************** | |
15 | C. * * | |
16 | C * Routine to transform momentum and energy from the * | |
17 | C * Lorentz frame A to the Lorentz frame B * | |
18 | C * * | |
19 | C * PA(1) * | |
20 | C * PA(2) Momentum components in frame A * | |
21 | C * PA(3) * | |
22 | C * PA(4) Energy * | |
23 | C * PB(..) same quantities in frame B * | |
24 | C * * | |
25 | C * BETA(1) Components of velocity of frame B * | |
26 | C * BETA(2) as seen from frame A * | |
27 | C * BETA(3) * | |
28 | C * BETA(4) 1./SQRT(1.-BETA**2) * | |
29 | C. * * | |
30 | C. * ==>Called by : GDECAY,GDECA3 * | |
31 | C. * Author M.Hansroul ********* * | |
32 | C. * * | |
33 | C. ****************************************************************** | |
34 | C. | |
35 | DIMENSION BETA(4),PA(4),PB(4) | |
36 | C. | |
37 | C. ------------------------------------------------------------------ | |
38 | C. | |
39 | BETPA = BETA(1)*PA(1) + BETA(2)*PA(2) + BETA(3)*PA(3) | |
40 | BPGAM = (BETPA * BETA(4)/(BETA(4) + 1.) - PA(4)) * BETA(4) | |
41 | PB(1) = PA(1) + BPGAM * BETA(1) | |
42 | PB(2) = PA(2) + BPGAM * BETA(2) | |
43 | PB(3) = PA(3) + BPGAM * BETA(3) | |
44 | PB(4) =(PA(4) - BETPA) * BETA(4) | |
45 | END | |
46 |