International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 1 Probing the Quark-Gluon Plasma with charm at LHC Andrea Dainese Universita`

Slides:

Advertisements

Similar presentations

Charm and beauty with ALICE at LHC

Advertisements

1 Jet Structure of Baryons and Mesons in Nuclear Collisions l Why jets in nuclear collisions? l Initial state l What happens in the nuclear medium? l.

First Alice Physics Week, Erice, Dec 4  9, Heavy  Flavor (c,b) Collectivity at RHIC and LHC Kai Schweda, University of Heidelberg A. Dainese,

Charm & bottom RHIC Shingo Sakai Univ. of California, Los Angeles 1.

K*(892) Resonance Production in Au+Au and Cu+Cu Collisions at  s NN = 200 GeV & 62.4 GeV Motivation Analysis and Results Summary 1 Sadhana Dash Institute.

A probe for hot & dense nuclear matter. Lake Louise Winter Institute 21 February, 2000 Manuel Calderón de la Barca Sánchez.

Relativistic Heavy-Ion Collisions: Recent Results from RHIC David Hardtke LBNL.

Direct-Photon Production in PHENIX Oliver Zaudtke for the Collaboration Winter Workshop on Nuclear Dynamics 2006.

5-12 April 2008 Winter Workshop on Nuclear Dynamics STAR Particle production at RHIC Aneta Iordanova for the STAR collaboration.

J/Ψ Suppression in QGP Outline:

Formation and decay of resonances Motivation Formation time Resonance Correlation Summary and Future Plans Motivation Formation time Resonance Correlation.

Interaction between jets and dense medium in heavy-ion collisions Rudolph C. Hwa University of Oregon TsingHua University, Beijing, China May 4, 2009.

SQM2006, 03/27/2006Haibin Zhang1 Heavy Flavor Measurements at STAR Haibin Zhang Brookhaven National Laboratory for the STAR Collaboration.

Padova, 18 dicembre 2003 Andrea Dainese 1 Charm production and energy loss in nucleus-nucleus collisions with ALICE Andrea Dainese Università degli Studi.

Recent measurements of open heavy flavor production by PHENIX Irakli Garishvili, Lawrence Livermore National Laboratory PHENIX collaboration  Heavy quarks.

1 ALICE Status Orlando Villalobos Baillie University of Birmingham NuPECC Meeting Edinburgh 10 th October 2014.

Christina Markert Physics Workshop UT Austin November Christina Markert The ‘Little Bang in the Laboratory’ – Accelorator Physics. Big Bang Quarks.

JSPS Research Fellow / University of Tsukuba T. Horaguchi Oct for HAWAII /10/15HAWAII

1 OPEN HEAVY FLAVOUR PRODUCTION IN pp COLLISIONS WITH AT LHC Rosa Romita ( ) for the ALICE Collaboration.

Charm and beauty with ALICE at LHC Rosario Turrisi University and INFN, Padova, Italy for the ALICE Collaboration.

Jets at RHIC Jiangyong Jia

28 April 0 Yaxian Mao, Daicui Zhou, Yves Schutz In ALICE Physics Workgroup: High p T and photons ( for ALICE collaboration -- Wuhan)

D 0 Measurement in Cu+Cu Collisions at √s=200GeV at STAR using the Silicon Inner Tracker (SVT+SSD) Sarah LaPointe Wayne State University For the STAR Collaboration.

U N C L A S S I F I E D 7 Feb 2005 Studies of Hadronic Jets with the Two-Particle Azimuthal Correlations Method Paul Constantin.

1 Oliver Busch University of Tsukuba Jet Physics with ALICE Oliver Busch – Tsukuba 2014 /12/12.

Heavy flavour capabilities with the ALICE TRD Benjamin Dönigus ISNP 2008 Erice/Sicily.

Open charm hadron production via hadronic decays at STAR

09/15/10Waye State University1 Elliptic Flow of Inclusive Photon Ahmed M. Hamed Midwest Critical Mass University of Toledo, Ohio October, 2005 Wayne.

DIMUONnet - Clermont-Ferrand - December 13, 2004 Andrea Dainese 1 Andrea Dainese Padova – University and INFN Physics potential of D-meson reconstruction.

High Pt physics with TOF ALICE B.V.Zagreev ITEP

Jet Physics in ALICE Mercedes López Noriega - CERN for the ALICE Collaboration Hot Quarks 2006 Villasimius, Sardinia - Italy.

1 Oliver Busch for the ALICE collaboration Jet Physics with ALICE Oliver Busch – Tsukuba 2014 /03/13.

1 Andrea Dainese - Physics Forum – Measurement of the beauty production cross section in Pb-Pb collisions via single electrons F. Antinori, A.

U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA Slide 0 Study of the Quark Gluon Plasma with Hadronic Jets What:

ALICE Physics Week - Erice, Andrea Dainese 1 Andrea Dainese Padova – Università e INFN D 0 meson reconstruction with ALICE 1 st ALICE Physics.

Ralf Averbeck Stony Brook University Hot Quarks 2004 Taos, New Mexico, July 19-24, 2004 for the Collaboration Open Heavy Flavor Measurements with PHENIX.

Francesco Noferini Bologna University Erice, Italy 31 st August 2006 Two-particle correlations: from RHIC to LHC.

Probing the properties of dense partonic matter at RHIC Y. Akiba (RIKEN) for PHENIX collaboration.

Robert Pak (BNL) 2012 RHIC & AGS Annual Users' Meeting 0 Energy Ro Robert Pak for PHENIX Collaboration.

1 Fukutaro Kajihara (CNS, University of Tokyo) for the PHENIX Collaboration Heavy Quark Measurement by Single Electrons in the PHENIX Experiment.

Study of b quark contributions to non-photonic electron yields by azimuthal angular correlations between non-photonic electrons and hadrons Shingo Sakai.

Heavy Quark Energy Loss due to Three-body Scattering in a Quark- Gluon Plasma Wei Liu Texas A&M University  Introduction  Heavy quark scattering in QGP.

John Harris (Yale) LHC Conference, Vienna, Austria, 15 July 2004 Heavy Ions - Phenomenology and Status LHC Introduction to Rel. Heavy Ion Physics The Relativistic.

Parton energy loss Marco van Leeuwen. 2 Hard probes of QCD matter Use ‘quasi-free’ partons from hard scatterings to probe ‘quasi-thermal’ QCD matter Interactions.

OPEN HEAVY FLAVORS 1. Heavy Flavor 2 Heavy quarks produced in the early stages of the collisions (high Q2)  effective probe of the high-density medium.

High-p T Particles and RHIC Paradigm of Jet Quenching Ahmed M. Hamed NN2012 The 11 th International Conference on Nucleus-Nucleus Collisions 1.

29/08/2008ALICE Italia Analysis of the D + s  K + K - π + channel in the ALICE experiment Serhiy Senyukov Università & INFN di Torino (4050 m. asl)

BY A PEDESTRIAN Related publications direct photon in Au+Au  PRL94, (2005) direct photon in p+p  PRL98, (2007) e+e- in p+p and Au+Au 

Results from ALICE Christine Nattrass for the ALICE collaboration University of Tennessee at Knoxville.

1 Marcello Lunardon - NPDC18, Praha, 2004 Perspectives for the measurement of the beauty production cross section at LHC with ALICE Marcello Lunardon for.

24 Nov 2006 Kentaro MIKI University of Tsukuba “electron / photon flow” Elliptic flow measurement of direct photon in √s NN =200GeV Au+Au collisions at.

3rd LHC Detector Alignment WS - CERN, Andrea Dainese 1 Impact of misalignment on track and heavy-flavour reconstruction with the ALICE detector.

1 Probing dense matter at extremely high temperature Rudolph C. Hwa University of Oregon Jiao Tong University, Shanghai, China April 20, 2009.

Review of Heavy-Ion Results from the CERN LHC David Evans The University of Birmingham ICTDHEP Jammu, September 2013.

Christina MarkertHirschegg, Jan 16-22, Resonance Production in Heavy Ion Collisions Christina Markert, Kent State University Resonances in Medium.

Enke Wang (Institute of Particle Physics, Huazhong Normal University) I.Jet Quenching in QCD-based Model II.Jet Quenching in High-Twist pQCD III.Jet Tomography.

Systematic measurement of light vector mesons at RHIC-PHNEIX Yoshihide Nakamiya Hiroshima University, Japan (for the PHENIX Collaboration) Quark Matter.

Jet-Hadron Azimuthal Correlation Measurements in pp Collisions at √s = 2.76 TeV and 7 TeV with ALICE 2012/08/11-18 Quark Matter 2012 Motivation PhysRevC (CMS)PhysRevC (PHENIX)

Elliptic Flow of Inclusive Photon Elliptic Flow of Inclusive Photon Ahmed M. Hamed Midwest Critical Mass University of Toledo, Ohio Oct. 22,

Two particle correlations: from RHIC to LHC Francesco Noferini Bologna University INFN – sez. Bologna ALICE-TOF Tuesday, May 16th Villasimius (Italy) HOT.

1 Marcello Lunardon - BEACH 2006, Lancaster, UK The 7th International Conference on Hyperons, Charm And Beauty Hadrons - BEACH 2006 Lancaster, July 2-8.

Review of ALICE Experiments

for the ALICE collaboration University of Tennessee at Knoxville

Heavy Ion Physics: the ALICE program

Probing Quark Matter in the PHENIX Experiment at RHIC

Heavy-Flavour Physics in Heavy-Ion Collisions

ALICE and the Little Bang

Open heavy flavor analysis with the ALICE experiment at LHC

Andrea Dainese,University of Padova for the ALICE Collaboration

Hadron Formation in Nuclei in Deep-inelastic Scattering

Presentation transcript:

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 1 Probing the Quark-Gluon Plasma with charm at LHC Andrea Dainese Universita` degli Studi di Padova cc c D0D0 K-K- ++ c

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 2 Outline Quick introduction: physics of hot and dense QCD matter (see lectures by F.Karsch and T.W.Ludlam) Heavy ion physics at the LHC Parton energy loss in QGP the case for heavy quarks (charm) Experimental feasibility study Can we measure the energy loss of c quarks in the QGP?

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 3 Physics of hot and dense QCD matter (  F.Karsch) Temperature Baryonic density Lattice QCD (  B ~ 0) estimates the phase transition at: T c ~ 170 MeV and  c ~ 1 GeV/fm 3 ~ 5  nucleus QCD phase diagram hadronic matter exists in different states at high energy density (high temperature or high density) nuclear matter undergoes a phase transition to a deconfined Quark-Gluon Plasma (QGP)

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 4 Create the Little Bang in the lab In high energy heavy ion collision large energy densities (> 2-3 GeV/fm 3 ) are reached over large volumes (> 1000 fm 3 ) Evidence for the QGP formation collected by the 7 experiments of CERN-SPS programme (up to: Pb-Pb, ) Now BNL-RHIC is confirming/extending these results at (see lecture by T.W. Ludlam and talk by D. D’Enterria) Next step: LHC with large production of hard partons and heavy quarks excellent tools to study properties of QGP

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 5 Hard partons probe the medium Partons travel ~ 5 fm in the high colour-density medium Energy loss by gluonsstrahlung (more details follow) modifies momentum distributions depends on medium properties PROBE medium probe IN (known from pp, pA + pQCD) probe OUT IN vs. OUT

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 6 Parton Energy Loss Due to medium-induced gluon emission Average energy loss (BDMPS model): hard parton QCD process: emitted gluon radiates itself   E  L 2 path length L Casimir coupling factor: 4/3 for quarks 3 for gluons Medium transport coefficient  gluon density and momenta R.Baier, Yu.L.Dokshitzer, A.H.Mueller, S.Peigne' and D.Schiff, (BDMPS), Nucl. Phys. B483 (1997) 291. C.A.Salgado and U.A.Wiedemann, arXiv:hep-ph/ cold matter  E in 5 fm

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 7 Heavy quarks with momenta < GeV/c  v < c Gluons cannot be radiated at angles < m Q /E Q Due to distructive interference (same mechanism that determines angular ordering in parton showers) This ‘dead cone’ implies lower energy loss Heavy Quarks: dead cone Dead cone in vaccum: Yu.L.Dokshitzer, V.A.Khoze and S.I.Troyan, J. Phys. G17 (1991) Dead cone in medium: Yu.L.Dokshitzer and D.E.Kharzeev, Phys. Lett. B519 (2001) 199. Q D mesons almost not quenched at all Ratio D/hadrons enhanced and sensitive to medium properties

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 8 How to measure it? Most direct way to study quenching is by comparing p t distributions in pp and AA Nuclear modification factor: Energy loss R AA < 1 D 0  K -   decay allows the exclusive reconstruction of open charm mesons and a direct measurement of their p t distribution

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 9 D 0  K  detection strategy with ALICE STRATEGY: invariant mass analysis of fully-reconstructed topologies originating from (displaced) secondary vertices Measurement of Impact Parameters (Silicon vertex) Measurement of Momenta (TPC + silicon) Particle identification (High resolution Time of Flight) to tag the two decay products (K/  separation)

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 10 Results. Example: Pb-Pb p t -integrated (K,  ) Invariant Mass distribution (p T –integrated) (corresponding to 10 7 Pb-Pb events ~ 1 month of ALICE) Statistical Significance of the Signal: after background subtraction Details on selection strategy in: N.Carrer, A.D. and R.Turrisi, J. Phys. G29 (2003) 575. analysis for Pb-Pb and pp done in bins of p t and main errors estimated

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 11 R AA for D mesons ‘High’ p t (6-15 GeV/c) here energy loss can be studied (it’s the only expected effect) Low p t (< 6-7 GeV/c) Nuclear shadowing

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 12 R AA with Quenching standard quenching (no dead cone) increasing density R AA ~ decreasing at high p t R AA ~ increasing at high p t medium, Dead cone: low quenching but increasing with p t (typical signal of mass effect)

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 13 D/hadrons ratio Ratio expected to be enhanced because: D comes from (c) quark, while , K, p come mainly (~80%) from gluons, which lose twice energy as quarks dead cone for heavy quarks D/h ratio: R D/h = R D AA / R h AA R D/h ~ 2-3 in hot QGP sensitive to medium density

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 14 Summary LHC allows to investigate deconfined QCD matter by means of hard probes and their medium-induced quenching Exclusive reconstruction of D 0 decays with the ALICE detector provides sensitive tool for heavy quark ‘colourimetry’ of QGP

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 15 Back-up slides

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 16 Heavy ion Physics at LHC LHC: factor 30 jump in w.r.t. RHIC hotter bigger study of: longer-living ‘drops’ of QGP < 1  QGP (fm/c) 2x10 4 7x V f (fm 3 )  (GeV/fm 3 ) 2- 8 x dN ch /dy s 1/2 (GeV) LHCRHICSPS Central collisions  3  What are the properties of deconfined matter? ‘Deep de-confinement’ Lattice QCD,  B =0  closer to ‘ideal’ QGP  easier comp. with theory F. Karsch

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 17 Heavy Ion Physics at LHC Main novelty of the LHC: large cross section for hard processes (high-p t partons and heavy quarks) Hard processes are extremely useful tools happen at t = 0 (initial stage of the collision) have large virtuality Q and small “formation time”  t  1/ Q initial production not sensitive to properties of medium formed in the AA collision Initial yields and p t distributions in AA can be predicted using pp measurements + pQCD + collision geometry + “known” nuclear effect (e.g. shadowing  suppression of low-x (low-p t ) production) Deviations from such predictions are due to the medium q q Q Pb Ideal to study the properties of deconfined matter

International School of Subnuclear Physics - Erice, August 31, 2003 Andrea Dainese 18 Shadowing Nuclear initial state effect Bjorken-x: fraction of the momentum of the proton ( ) carried by the parton entering the hard scattering At the LHC Pb LHC ~ partons (mainly gluons) q q Q xaxa xbxb x a +x b g Pb (x)/g p (x) Shadowing: reduces initial hard yield at low p t (low x) scales trivially from pA to AA “they are so close that they fuse”