Relative abundance and change in upsilon yields (IMAGE)
Caption
This graph depicts the relative abundance and change in upsilon yields for each of the three varieties—ground state (1s) and two different excited states (2s and 3s)—in the absence of quark-gluon plasma (yellow bars) and in the plasma (orange bars with QGP in background). The absence of an upsilon yield for the 3s state in QGP implies that all the 3s upsilons may have dissociated.
Credit
Brookhaven National Laboratory
Usage Restrictions
OK for use with stories about this research.
License
Original content