Explaining Anomalous CDF mu gamma Missing-E_T Events With Supersymmetry
摘要
CDF recently reported an excess of events in the mu-gamma-missing E_T channel that disagrees with the Standard Model prediction. No such excess was observed in the e-gamma-mett channel. We explain the excess via resonant smuon production with a single dominant R-parity violating coupling lambda'_{211}, in the context of models where the gravitino is the lightest supersymmetric particle. The slepton decays to the lightest neutralino and a muon followed by neutralino decaying to a gravitino and photon. We determine a viable region of parameter space that fits the kinematical distributions of the Run I excess and illustrate the effect by examining the best fit point in detail. We provide predictions for an excess in the missing E_T and photon channel at Run I and Run II. Run II will decisively rule out or confirm our scenario.
引用
@article{arxiv.hep-ph/0111014,
title = {Explaining Anomalous CDF mu gamma Missing-E_T Events With Supersymmetry},
author = {B. C. Allanach and S. Lola and K. Sridhar},
journal= {arXiv preprint arXiv:hep-ph/0111014},
year = {2011}
}
备注
5 pages, Latex file including 3 figures (axodraw.sty style file attached). Version to appear in Phys. Rev. Lett. Substantial changes such as addition of kinematical fit regions and best-fit point