# Kalb-Ramond vs electromagnetic field

As I understand it string theory says that charged particles like electrons and quarks are actually open strings whose endpoints interact with the electromagnetic field $$A_\mu$$.

String theory also says that the bulk of these open strings interact with the Kalb-Ramond field $$B_{\mu\nu}$$.

So is a charged particle a source for both fields $$A_\mu$$ and $$B_{\mu\nu}$$?

Could we detect the $$B_{\mu\nu}$$ field using charged particles?