| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8197008 | Physics Letters B | 2007 | 5 Pages |
Abstract
Particles with millicharge q and sub-eV mass can be produced in photon-photon collisions, distorting the energy spectrum of the Cosmic Microwave Background. We derive the conservative bound qâ²10â7e (as well as model-dependent bounds two orders of magnitude stronger), incompatible with proposed interpretations of the PVLAS anomaly based on millicharged production or on millicharged-mediated axion-like couplings.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A. Melchiorri, A.D. Polosa, A. Strumia,