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| Heavy di-lepton pair production in nucleus-nucleus collisions at LHC energy |
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| Content: |
Di-lepton production in nucleus-nucleus collisions has provided valuable
insight for physics behind the in-medium modifications to various
properties of vector mesons. They have also provided information on
collectivity and temperature of the system produced in the collisions.
So far within the available centre of mass energy range of nucleus-nucleus
collisions the measurements are concentrated on detection of di-electron
and di-muon pairs. Due to small mass of these leptons one has to deal with
considerable sources of backgrounds and hadronic contributions to filter
out the contribution from thermal partonic sources. Collisions at LHC
energies provide an opportunity to look at tau ( mass ~ 1.77 GeV) dilepton pairs.
In this work we present a case study where the different sources of tau production
for partonic matter, Drell Yan and tau production from the annihilation of pions are studied.
The contributions to tau production through intermediary Z-boson, photon and
Higgs boson are calculated. The ratio of tau di-lepton
pair yields for nucleus-nucleus collisions relative to p+p collisions
at LHC energies as a function of tau dilepton pair mass is shown to be a
good observable to study the thermal contribution from quark-gluon plasma. |
| Id: |
160 |
| Place: |
Room: Main Auditorium |
| Starting date: |
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| Duration: |
00' |
| Primary Authors: |
Ms. MAJUMDER, SARBANI (BOSE INSTITUTE, KOLKATA) |
| Co-Authors: |
Dr. ALAM, JAN -E (VECC, KOLKATA)
Dr. GHOSH, SANJAY K (BOSE INSTITUTE, KOLKATA)
Dr. MOHANTY, BEDANGA (VECC, KOLKATA)
Dr. RAY, RAJARSHI (BOSE INSTITUTE, KOLKATA) |
| Presenters: |
Ms. MAJUMDER, SARBANI |
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Last modified: 21 April 2011 05:02