Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8198470 | Physics Letters B | 2006 | 4 Pages |
Abstract
In the standard model production of on-shell Z boson at a photon collider (or Z decays into γγ) is strictly forbidden by angular momentum conservation and Bose statistics (the Yang's theorem). In the standard model with noncommutative space-time this process can occur. Therefore this process provides an important probe for the noncommutative space-time. The γγ collision at the ILC by laser backscattering of the electron and positron beams offers an ideal place to carry out such a study. Assuming an integrated luminosity of 500 fbâ1, we show that the constraint which can be achieved on Î(Zâγγ) is three to four orders of magnitude better than the current bound of 5.2Ã10â5GeV. The noncommutative scale can be probed up to a few TeVs.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Xiao-Gang He, Xue-Qian Li,