PMOD: Modify particle attributes

Format

PMOD `part-name antipart-name ' mass charge life-time width

Parameters:

'part-name antipart-name'

see 4.13.1. The attributes of a particle and its antiparticle are modified at the same time. If a particle is its own anti- particle, the same name has to be given twice.

mass charge life-time width:

Real numbers (with decimal point). The charge of the antiparticle is set to -charge. If less than four numbers are given, the remaining particle attributes are not changed.

Example:

        PMOD 'GAMMA GAMMA ' 0.001

sets the photon mass to 1 MeV; the other particle attributes (charge, lifetime, width) are not changed.

Mistake:

        PMOD 'PI+ PI0 ' .14

because pi+ and pi0 are NOT antiparticles of each other. Once a particle-antiparticle relation is established (for example on the standard table), it can never be changed.

If the particle names given on this card are not yet established in the table then

• new table entries are created;
• a warning is issued;
• the program execution continues.