Possible evidence of a ground level enhancement of muons in association with a SWIFT Trigger

C. R. A. Augusto, C. E. Navia, M. B. Robba +1

Starting from April 2007, a search for solar daily variation of the muon intensity ($E_{\mu }>0.2$ GeV) at sea level and using two directional muon telescopes is in progress. In this su…