Antimatter

In particle physics, antimatter is material composed of antiparticles, which have the same mass as particles of ordinary matter but opposite charges, as well as other particle properties such as lepton and baryon numbers and quantum spin. Collisions between particles and antiparticles lead to the annihilation of both, giving rise to variable proportions of intense photons (gamma rays), neutrinos, and less massive particle–antiparticle pairs. The total consequence of annihilation is a release of energy available for work, proportional to the total matter and antimatter mass, in accord with the mass–energy equivalence equation, E = mc².

Antiparticles bind with each other to form antimatter, just as ordinary particles bind to form normal matter. For example, a positron (the antiparticle of the electron) and an antiproton (the antiparticle of the proton) can form an antihydrogen atom. Physical principles indicate that complex antimatter atomic nuclei are possible, as well as anti-atoms corresponding to the known chemical elements. Studies of cosmic rays have identified both positrons and antiprotons, presumably produced by collisions between particles of ordinary matter. Satellite-based searches of cosmic rays for antideuteron and antihelium particles have yielded nothing.

Antimatter (disambiguation)

Antimatter is material composed of antiparticles in the same way normal matter is composed of particles.

Antimatter may also refer to:

Antimatter (band)

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Antimatter, a UK melancholic rock band, is the project of longtime member Mick Moss. The project was formed in 1997 by Duncan Patterson (former bassist/songwriter of Anathema) and Moss. The pair released three albums together - Saviour, Lights Out and Planetary Confinement. Shortly after the completion of Planetary Confinement, Patterson left to start another band called Íon. Moss continued and released the project’s fourth album, Leaving Eden, following with 2009’s Live@An Club, released on his own label Music In Stone. Most recently Moss has overseen a 10 year retrospective multi-disc release entitled ‘Alternative Matter’, and released the 5th Antimatter album, 'Fear Of A Unique Identity', in 2012.

The earlier Antimatter albums, Saviour and Lights Out, focused on melodic vocal lines (often by guest female vocalists), dark electronica and balanced on the borderline between gothic and trip hop. Planetary Confinement marked the start of a shift towards more of an acoustic based melancholic rock sound. Leaving Eden, with Mick Moss as the only songwriter and singer, continues in this direction and also gives electric guitars a more prominent role. The result is a heavier sounding album, with little trace of the ambient sound of early Antimatter. Recent album Fear Of A Unique Identity presents a more layered, energetic picture, mixing all of Antimatter's past textures with a New Wave feel.