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It has been suggested recently that an arbitrary induced theta-vacuum state could be created in heavy ion collisions. If such a state can be created, it would decay by various mechanisms to the fundamental theta=0 state which is the true ground state of our world. In the following we will discuss the possibility of studying this unusual state through the emission of pions, eta-mesons, and eta'-mesons. We will also present the spectrum of the produced particles in this non-zero theta background. We use the instantaneous perturbation theory for our estimates

physical review. c. nuclear physics/physical review. c, nuclear physics

Induced<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>θ</mml:mi><mml:mo>−</mml:mo><mml:mi mathvariant="normal">v</mml:mi><mml:mi mathvariant="normal">a</mml:mi><mml:mi mathvariant="normal">c</mml:mi><mml:mi mathvariant="normal">u</mml:mi><mml:mi mathvariant="normal">u</mml:mi><mml:mi mathvariant="normal">m</mml:mi></mml:math>states in heavy ion collisions: A possible signature

Inducedθ−vacuumstates in heavy ion collisions: A possible signature