SN0411 : Can Doubly Strange Dibaryon Resonances be Discovered at RHIC?
Updated on Sun, 2007-07-15 19:47 by testadmin. Originally created by chajecki on 2007-06-18 19:57.
| Author(s) | : | S. D. Paganis, G. W. Hoffmann, R. L. Ray, J.-L. Tang, T. Udagawa, R. S. Longacre |
| Date | : | Sep. 17, 1999 |
| File(s) | : | sn0411.ps.gz |
| Abstract | : | The baryon-baryon continuum invariant mass spectrum generated from ultrarelativistic nucleus + nucleus collision data may reveal the existence of doubly-strange dibaryons not stable against strong decay if they lie within a few MeV of threshold. Furthermore, since the dominant component of these states is a superposition of two color-octet clusters which can be produced intermediately in a color-deconfined quark-gluon plasma (QGP), an enhanced production of dibaryon resonances could be a signal of QGP formation. A total of eight, doubly-strange dibaryon states are considered for experimental search using the STAR detector. These states may decay to Lambda Lambda and/or p Xi-, depending on the resonance energy. STAR's large acceptance, precision tracking and vertex reconstruction capabilities, and large data volume capacity, make it an ideal instrument to use for such a search. Detector performance and analysis sensitivity are studied as a function of resonance production rate and width for one particular dibaryon which can directly strong decay to p Xi-, but not Lambda Lambda. Results indicate that a window of opportunity exists for discovery of such resonances using STAR if the resonance production rates are comparable to coalescence model predictions for dibaryon bound states. |
| Keywords | : | |
| Category | : | PWG |
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