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SUMMARY:Re-visiting the $J/\\Psi$ suppression for quark-gluon plasma forma
 tion in small systems
DTSTART;VALUE=DATE-TIME:20230210T103000Z
DTEND;VALUE=DATE-TIME:20230210T104500Z
DTSTAMP;VALUE=DATE-TIME:20260813T090611Z
UID:indico-contribution-825@events.vecc.gov.in
DESCRIPTION:Speakers: Ananta Prasad Mishra ()\nThere have been different p
 roposals for signatures of the formation of a deconfined thermal medium(qu
 ark-gluon plasma) in heavy-ion collisions. The suppression of $J/\\Psi$ in
  the deconfined medium is one of the cleanest signals among many other sig
 natures like elliptic flow\, jet quenching etc. for the formation of the d
 econfined medium. However\, there are very few signals effective for the f
 ormation of QGP in small systems such as the systems produced in proton-pr
 oton\, proton-deuteron and deuteron-deuteron collisions.  Here the medium 
 formed is shown to be very short-lived compared to that formed in heavy io
 n collision as the system undergoes 3-dimensional spherical expansion from
  the very beginning of the hydrodynamic phase. We model the dynamics of th
 e small systems for different sizes of the formed systems after the Gubser
  flow model and we infer that the hydrodynamic expansion phase timescale i
 s smaller by a factor of at least 2. We then calculate the dissociation pr
 obability of $J/\\Psi$ through the non-adiabatic evolution of the state us
 ing the time-dependent perturbation theory for different values of thermal
 ization time. We find rather small dissociation probability of $J/\\Psi$ i
 n small systems in contrast to that in the systems produced in Au-Au/Pb-Pb
  collisions\, thereby establishing that quarkonia($J/\\Psi$) suppression m
 ay not be a very useful signature for the formation of the thermal medium 
 for proton-proton/proton-deuteron or deuteron-deuteron collisions.\n\nhttp
 s://events.vecc.gov.in/event/19/contributions/825/
LOCATION:Hall 2 (Crystal)
URL:https://events.vecc.gov.in/event/19/contributions/825/
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