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Dark photon

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Title: Dark photon  
Author: World Heritage Encyclopedia
Language: English
Subject: Dark radiation, Dark matter, Bosons, Physics beyond the Standard Model, Halo mass function
Collection: Bosons, Dark Matter, Hypothetical Elementary Particles, Physics Beyond the Standard Model
Publisher: World Heritage Encyclopedia

Dark photon

The dark photon is a hypothetical elementary particle, proposed as an electromagnetic force carrier for dark matter.[1] Dark photons would theoretically be detectable via their mixing with ordinary photons, and subsequent effect on the interactions of known particles.[1]

Dark photons were proposed in 2008 by Lotty Ackerman, Matthew R. Buckley, Sean M. Carroll, and Marc Kamionkowski as the force carrier of a new long-range U(1) gauge field, "dark electromagnetism", acting on dark matter.[2] Like the ordinary photon, dark photons would be massless.[2]

Dark photons were suggested to be a possible cause of the so-called 'g–2 anomaly', but were largely ruled out as a cause of the anomaly by February 2015, according to results from the Muon g–2 experiment at Fermilab and the PHENIX detector at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory.[1]

See also


  1. ^ a b c Walsh, Karen McNulty (February 19, 2015). "Data from RHIC, other experiments nearly rule out role of 'dark photons' as explanation for 'g-2' anomaly". PhysOrg. Retrieved 23 February 2015. 
  2. ^ a b Carroll, Sean M. (October 29, 2008). "Dark photons". Retrieved 23 February 2015. 
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