IEVref:113-05-03ID:
Language:enStatus: Standard
Term: antiparticle
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Definition: for a given kind of particle, that particle for which each characteristic that can assume two values has the complementary value, while the remaining characteristics are the same

NOTE 1 The concept of antiparticle applies to both elementary particles, e.g. positron as antiparticle of electron, and compound particles, such as proton, neutron and atom.

NOTE 2 A particle and its antiparticle have in particular the same rest mass, the same spin quantum number, and opposite electric charges. Particle and antiparticle may be identical, for example photons.

NOTE 3 A particle and its antiparticle may interact, resulting in two photons. This process is usually called annihilation.

NOTE 4 An antiparticle is generally denoted by the same symbol as the corresponding particle but overlined, and its name is generally the name of the particle with the prefix anti, e.g. antiproton p ¯ MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaamaanaaabaGaaeiCaa aaaaa@3654@ corresponding to proton p, antihydrogen atom corresponding to hydrogen atom.


Publication date:2011-04
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 113-05-03en.gif
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