If you juste deleted le partition et did pas créez un nouveau partition, it is likely possible to recover.
First things premier - pull le drive, put it in a Linux box et do a raw clone. The premier rule of data recovery is that you do votre work on a clone, pas le original.
Now on le clone run a linux tool called testdisk. If le filesystem n'a pas been obliterated this should re-create le partition table entry et allow it to be accessed again.
If you did créez un nouveau partition, ou si testdisk ne peut pas find le filesystem alors votre chances of successful recovery are much lower. You might want to consider talking to data recovery specialists at this point.