  Results are reported from a search for the anomalous production of highly
boosted Z bosons with large transverse momentum and decaying to dimuons. Such Z
bosons may be produced in the decays of new heavy particles. The search uses pp
collision data at sqrt(s) = 7 TeV, corresponding to an integrated luminosity of
5.0 inverse femtobarns recorded with the CMS detector. The shape of the
observed transverse-momentum distribution of Z bosons is consistent with
standard model expectations. Constraints are obtained on models predicting the
production of excited quarks decaying via electroweak processes. Assuming a
compositeness scale that is equal to the excited quark mass as well as
transition coupling strengths between Z bosons and excited quarks that are
equal to standard model couplings to quarks, masses of excited quarks below
1.94 TeV are excluded at the 95% confidence level. For excited quark production
via a novel contact interactions, masses below 2.22 TeV are excluded, even if
the excited quarks do not couple to gluons.
