1 / 13

Quark Gluon Plasma

Welcome to the presentation of:. Quark Gluon Plasma. Presented by: Rick Ueno. Background. Originated from Quantum Chromodynamics (QCD) proposed by Murray Gell-Mann in 1963 QCD is a theory describing strong interactions Plays important roles in supporting Standard Model. Murray Gell-Mann.

badru
Télécharger la présentation

Quark Gluon Plasma

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Welcome to the presentation of: Quark Gluon Plasma Presented by: Rick Ueno

  2. Background • Originated from Quantum Chromodynamics (QCD) proposed by Murray Gell-Mann in 1963 • QCD is a theory describing strong interactions • Plays important roles in supporting Standard Model Murray Gell-Mann

  3. General Information • It is a different state of quarks and gluons as we know today • It is thought to exist around ten microseconds after the Big Bang • Quarks and gluons were at too large densities and temperature to be confined within nucleon.

  4. ICE WATER Energy (Heat) added STEAM HYDROGEN & OXYGEN OXYGEN PROTON & ELECTRON QUARKS & GLUONS ELECTRON QGP

  5. QGP and Big Bang • Theory predicts the critical temperature T0 to be 150 – 200 MeV, and Energy density E0 to be approximately 1 GeV/fm3. • As the universe expands and cools, free quarks and gluons form stable particles as we know today

  6. Why do we want this? • This tests the Standard Model of strong interactions (QCD) • We want to know what consisted in the early stage of the big bang

  7. QGP Experiments • Scientists believe that some QGP still exist in the centre of dense neutron stars • But we can’t get there and obtain samples • So we have to make our own in the laboratory • Promising experiments are RHIC and ALICE

  8. ALICE Experiment • “ALarge Ion Collider Experiment” • Its purpose is to detect and to study QGP • Begins operation in 2007 • The experiment benefits from experience gained from RHIC • Uses lead, the heaviest ion to be accelerated in laboratory, to maximize the signal for detecting QGP

  9. ALICE Detector

  10. Detection of QGP • Two lead particles collide • They form into a short-lived fireball volume • This state is in QGP form • After short period of time it expands and cools, and it emits hadrons such as J/Ψ,which we can detect

  11. Problems • Temperatures that we can achieve at this stage is barely enough for deconfinement • Limitation of statistical analysis • The quark gluon plasma is yet to be discovered unambiguously

  12. Future of QGP • The more we know about QGP, the more we know about our own universe • Characterization of QGP by electromagnetic radiation has only begun • The ongoing technology increases the collision energy, bringing the energy well above threshold of formation of QGP

  13. References & Further Readings • ALICE, (n.d.). When Time Began, Retrieved from: http://aliceinfo.cern.ch/Public/When_time_began.html • ALICE, (n.d.). What is Quark matter? Retrieved from: http://aliceinfo.cern.ch/Public/HeavyIon.html • Jacak, B. (2001) Is the Quark Gluon Plasma in Hand? Nuclear Physics A680 pp221-228 • Lahanas, M. (n.d.) Quark Gluon Plasma. Retrieved from: http://www.mlahanas.de/Physics/QGP/QGP.htm • University of Cambridge. (n.d.). Hot Big Bang. Retrieved from: http://www.damtp.cam.ac.uk/user/gr/public/bb_home.html • Wikipedia: http://www.wikipedia.com

More Related