Perspective for resonances in p-p collisions with the ALICE detector

Details Perspective for resonances in p-p collisions with the ALICE detector Perspective for resonances in p-p collisions with the ALICE detector

2008-10-14

arxiv.org/abs/0810.2383v1

Physics

Nuclear Physics

Nuclear Experiment

3 pages, 3 figures, Contribution to ICHEP08, 34th International Conference on High Energy Physics, Philadelphia, 2008

Scientific paper

The capability of the ALICE detector to reconstruct short-lived resonances from the very beginning of the LHC p-p program start-up was investigated, considering about 300,000 minimum bias p-p PYTHIA events at 900 GeV and 10 TeV, fully reconstructed under the hypothesis of a still misaligned detector. Only the information from track reconstruction was taken into account and no PID knowledge was considered. A reliable rho(770) yield estimation was possible in 900 GeV events. Moreover, in 300,000 p-p events at 10 TeV the signal for the phi-resonance could be extracted. A significance of 9 can be reached if only resonances with a transverse momentum larger than 1.5 GeV/c are considered. Moreover, even with this low statistics the phi signal is visible in events with a multiplicity as high as 100.

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