Physicists observe the sequential “melting” of upsilons
Scientists used the STAR detector on the Relativistic Heavy Ion Collider (RHIC) to comply with the dissociation of upsilon particles within the quark-gluon plasma. These upsilons encompass a backside quark and an antibottom quark held collectively by gluons with completely different binding energies: a tightly sure floor state (left), an intermediate selection (proper), and the …
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