Has anyone dropped antiprotons to test if they fall at the same speed?

[DEvens]

Has the experiment been done to drop anti-matter and see if it falls the same speed as regular matter? I seem to have a memory of an experiment to drop anti-protons from quite some time ago. But I don't seem to find a reference when I look.

 

[Bill_K]

No, but here's a http://aegis.web.cern.ch/aegis/ one.

 

[DrClaude]

The ALPHA collaboration has recently obtained some (inconclusive) results:

http://home.web.cern.ch/about/updates/2013/04/alpha-novel-investigation-gravity-and-antimatter