scholarly journals Invariant-mass spectroscopy for condensed single- and double-K̄ nuclear clusters to be formed as residues in relativistic heavy-ion collisions

2004 ◽  
Vol 587 (3-4) ◽  
pp. 167-174 ◽  
Author(s):  
Toshimitsu Yamazaki ◽  
Akinobu Doté ◽  
Yoshinori Akaishi
Keyword(s):  
Invariant Mass ◽  
Mass Spectroscopy ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions ◽  
Nuclear Clusters

SEARCH FOR NEUTRAL BOSONS IN RELATIVISTIC HEAVY-ION COLLISIONS

2008 ◽  
Vol 17 (05) ◽  
pp. 759-770 ◽  
Author(s):  
P. L. JAIN
Keyword(s):  
Invariant Mass ◽  
Heavy Ion Collisions ◽  
Life Time ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Electron Pairs ◽  
Ion Collisions ◽  
Low Mass

In this talk, I will describe results on 1,220 electron pairs produced from a 207 Pb beam at 160A GeV in a nuclear experiment EMU 11 conducted at the CERN SPS. These electron pairs were produced at a distance of more than 50 μm from the primary interactions, which eliminates contamination due to Dalitz pairs. Results on electron pairs with invariant mass Q ranging between 1 and 100 MeV and life-time τ between 10−15 s and 10−12 s were analyzed. After subtracting background pairs from the materialization of photons and from the decays of π0 to photons from the data, they exhibit an enhancement at low mass Q = 6 – 20 MeV with narrow peaks at 7 ± 1 MeV , 19 ± 1 MeV and τ ≤ 10−13 s .

Effective radii of light composites produced in relativistic heavy ion collisions

1986 ◽  
Vol 33 (3) ◽  
pp. 1095-1097 ◽  
Author(s):  
H. Schulz ◽  
G. Röpke ◽  
V. D. Toneev ◽  
K. K. Gudima
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions
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