In order to study the QCD chiral critical point we investigate Binder
Cumulants of the chiral condensate. The results were obtained from simulations
of 3 and 2+1 flavors of standard staggered fermions and 3 flavors of p4
improved staggered fermions. The quark masses used are close to the physical
quark mass. To extract the dependence on quark mass and chemical potential we
apply a new reweighting technique based on a Taylor expansion of the action.
The reweighting accuracy is O(m) for the standard and O(m2),
O(μ2) for the p4 action.Comment: 3 pages, 6 figures, Lattice2002(nonzerot