Publicação: Two-photon final states in peripheral heavy ion collisions
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We discuss processes leading to two photon final states in peripheral heavy ion collisions at RHIC. Due to the large photon luminosity we show that the continuum subprocess [Formula Presented] can be observed with a large number of events. We study this reaction when it is intermediated by a resonance made of quarks or gluons and discuss its interplay with the continuum process, verifying that in several cases the resonant process overwhelms the continuum one. It also investigated the possibility of observing a scalar resonance (the [Formula Presented] meson) in this process. Assuming for the [Formula Presented] the mass and total decay width values recently reported by the E791 Collaboration we show that RHIC may detect this particle in its two photon decay mode if its partial photonic decay width is of the order of the ones discussed in the literature. © 2001 The American Physical Society.
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Physical Review C - Nuclear Physics, v. 65, n. 1, p. 10-, 2002.
