Strange Baryon Resonances. Christina Markert, Yale University. Motivation Results (1520) ,(1385) and (1530) from p+p, Au+Au and first d+Au Data Summary and Future Plans. Christina Markert, Sevil Salur, Richard Witt (Yale/Bern), Ludovic Gaudichet (Subatech/Nantes).
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Christina Markert, Yale University
Christina Markert, Sevil Salur,
Richard Witt (Yale/Bern),
Ludovic Gaudichet (Subatech/Nantes)
DOE Meeting at Yale, September 2003
Short life time [fm/c]
< < K* < * < * < * <
1.3<1.7< 4 < 6 < 13 < 20 < 40
<pT> 0.92 0.03 GeV
(1385) and X(1530) enough statistics corrections still underway
<pt> for high mass resonances in p+p higher than particles with same mass ?
No mass shift or width broadening visible
UrQMD Microscopic model
Tch = 175 MeV
Tch = 120 MeV
Thermal description: Chemical freeze-out temperature Tch = 120 MeV
Microscopic model : Time span between chemical and kinetical freeze-out = 5-10 fm/c.
(1385) ? analysis on the way
Decrease from p+p to A+A at 200GeV : 70% ± 45%
STAR ideal decay mode is
1.6 Million Au-Au events
= 3 s peak.
No signal yet