Glue constraining asymmetries in W, gamma, or Z production at CERN LHC - art. no. 014016.

We propose a class of forward-backward asymmetries with respect to the subp rocess c.m. scattering angle in V + jet production at hadron colliders, wit h V being any of (W, Z, gamma, H), which are directly proportional to the g luon distribution g(x). The information that these asymmetries can provide is complementary to that reachable from measurements of the transverse mome ntum and/or the rapidity distributions of a V in kinematical regimes where gluon scattering subprocesses dominate. The accuracy which can be reached i n the W, Z and gamma cases, at the upgraded Fermilab Tevatron and at CERN L HC, should allow a considerable improvement of our knowledge of the gluon d istribution function, especially at large x. [S0556-2821(99)04801-8].