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Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of Engineering Physics Tsinghua University

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Page 1: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Frontiers of Nuclear Physics A Personal Outlook

Huan Zhong HuangDepartment of Physics and AstronomyUniversity of California, Los Angeles

Department of Engineering PhysicsTsinghua University

Page 2: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

With the right tools Nuclear Physics is poised to make significant discoveries that will also impact other fields

Nuclear Physics is the study of:• Nucleons and atomic nuclei as complex, many body system of quarks or neutrons and protons • Bound together by fundamental forces (Quantum Chromo-Dynamics (QCD), nucleon-nucleon force (NN))• Deep connection with evolution of the universe - production of the chemical elements – stars, supernovae, etc.

RHIC

CEBAFRIA

protons

electrons

Tests of Standard Model

Underground Experiments

Cold Neutron Experiments

Rare Isotope Accelerator (RIA) CEBAF 12 GeV Upgrade RHIC upgrade (RHIC II)

Page 3: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Topics

1)RHIC Upgrade

2)JLab 12 GeV Upgrade

3)Rare Isotope Accelerator

4)Underground Laboratory

5)Electron-Ion Collider

Page 4: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

STAR

Relativistic Heavy Ion Collider --- RHIC

Au+Au 200 GeV N-N CM energyPolarized p+p up to 500 GeV CM energy

Page 5: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Quark-Hadron Phase Transition

Page 6: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Hadronization of Bulk Partonic Matter

1) At the moment of hadronization in nucleus-nucleus collisions at RHIC the dominant degrees of freedom is related to number of constituent quarks.

2) These ‘constituent quarks’ exhibit an angular anisotropy resulting from collective interactions.

3) Hadrons seem to be formed from coalescence or recombination of the ‘constituent quarks’, and the hadron properties are determined by the sum of ‘constituent quarks’.

Deconfined Quark Degree of Freedom

Page 7: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Constituent Quark Scaling

STAR

PHENIX

Baryon

Meson

Constituent (n) Quark Scaling-- Meson n=2 and Baryon n=3 grouping

Saturation of v2 at Intermediate pT

Page 8: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Partonic v2 and Surface Emission

PR

L 92

(20

04

) 05

23

02

; PR

L 91

(20

03

) 18

23

01

At hadron formation time there is a collective v2

among constituent quarks

Recombination/coalescence provides a hadronization scheme (not necessarily related to partonic matter, works for d+Au)

Possible geometrical nature of v2 saturation – surface emission

Page 9: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Conditions at Tc

Empirically,Partonic matter evolves such that at the

hadronization, the dominant degrees of freedom are in ‘constituent quarks’/quasi-hadrons. The formation mechanism could be coalescence or recombination of these quarks.

Gluon degrees of freedom are not manifested at hadronization, though at initial stage of the heavy ion collision, gluons must dominate.

Page 10: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Lattice QCDLQCD,

Spectral functions of hadrons (J/psi and light hadrons) survive near TC or somewhat above TC. Strong correlations persist up to high temperature above TC!

LQCD e.g. S. Datta et al, hep-lat/0412037 J/ and C may survive up to 2.25 TC !

Our data indicate that at T=TC even light hadrons are in quasi-hadron state (strongly interacting constituent quark state) !

Page 11: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Phase Transition ?

The Initial State from the Collision must be dominated by gluons (Temperature?) Parton Evolutions (?)At the Hadronization Stage the dominate degrees of freedom are constituent quarks (or quasi-hadrons) (Empirical + LQCD)What is the parton evolution dynamics??

Empirically the dense matter with collective motions of constituent quark degrees of freedom must be preceded with a deconfined partonic matter, BUT we do not have any experimental indication that this is a phase transition !

Page 12: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

RHIC Physics in + Years1) Heavy Quark Production

-- Yield and pT distribution (Energy Loss)-- Parton Collectivity (Elliptic Flow)

2) Thermal Photon Radiation

3) QCD Photons (gamma-jet and QGP Brem.)

4) Chiral Symmetry and low mass di-leptons

5) Exotic Particle Searches

6) Search for QCD Critical Point – Low Energy Scan

Page 13: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

STAR – Exciting Physics Program A full TOF and Heavy Flavor Tracker upgrade will greatly enhance STAR’s capability !!

RHIC – Exotic Particle Factory

Heavy Flavor TrackerUsing Active Pixel Sensor

two layers of thin silicon detector 1.5 cm and 4 cm radius Charmed Exotics?!Full Barrel TOF Using MRPC

Page 14: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Hadron Blind Detector

Gas Box for CF4

CsI-doped Triple GEMs

Preamps

Page 15: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Pixel barrel m x 425 m)Strip barrels(80 m x 3 cm)Endcap Pads

1.2<||<2.4||<1.2

Silicon Vertex Tracker (VTX)

Page 16: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

RHIC Beyond +5 Years Hadrons with internal structure beyond existing

QCD qqq and q-qbar framework !!

pp pA

AA

pppA

AA

Exotic

RHIC – Dedicated QCD Machine & Beyond

(spin) (CGC,EMC)

(Deconfinement Phase Transition)

Page 17: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of
Page 18: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Jefferson Lab (JLab)

Page 19: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Structure of the Nucleon

•Nucleon anomalous magnetic moment (Stern, Nobel Prize 1943)

•Electromagnetic form factor from electron scattering (Hofstadter, Nobel Prize 1961)

•Deep-in-elastic scattering, quark underlying structure of the nucleon

(Freedman, Kendell, Feldman, Nobel Prize 1990)

Page 20: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

JLab 12 GeV Upgrade

Scientific Goals: 1) Quark structure of the proton

2) Gluons in the proton

3) Nature of Confinement

4) Exotic Particles

Glueball

proton

Page 21: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of
Page 22: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of
Page 23: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of
Page 24: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of
Page 25: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Underground Laboratory

Physics Topics: 1) Solar Neutrino/Atmosphere Neutrino

2) Double beta Decay

3) Dark Matter

Page 26: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Solar Neutrino Energy Spectrum

Page 27: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

Two Generation Model

1.24

(Pe minimum)

Page 28: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

combined analysis SNO and KamLand

Best fit:m2=7.1 x 10-5eV2

tan2 = 0.41

Page 29: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

eRHIC as an electron-ion collider

Page 30: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

eRHIC Inevitable ?! But When?RHIC II – Machine Upgrade

-- Tandem-- Electron Cooling

Electron – LINAC 10 GeV

Natural Physics Direction from RHIC/JLAB20 Years ?

Page 31: Frontiers of Nuclear Physics A Personal Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department of

The End


Status Update on STAR Upgrades Huan Zhong Huang Department of Physics and Astronomy University of California at Los Angeles For the STAR Collaboration

STAR Heavy Ion Physics Program - 京都大学STAR Heavy Ion Physics Program and Future Perspective Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California

1 Recent Results from RHIC Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles Department of Engineering Physics

Department of Physics & Astronomyjarrell/PAPERS/ipt_holhub_prb_50_6939.pdf · Department of Physics & Astronomy

STAR Time-Projection Chamber Huan Zhong Huang Department of Engineering Physics Tsinghua University & Department of Physics and Astronomy University of

Department of Physics P - dept.ru.ac.bddept.ru.ac.bd/physics/wp-content/uploads/BScSyllabus2012-15.pdf · Department of Physics P ... The department of physics, Rajshahi University,

Physics 101 - Department of Physics

Dileptons and Photons Huan Z Huang Department of Physics and Astronomy University of California, Los Angeles Department of Engineering Physics Tsinghua

Department of Physics BSc Physics - shcollege.ac.in

Strangeness Production and Thermal Statistical Model Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles Department

High p T Probes of QCD Matter Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California, Los Angeles Department of Engineering

Introduction to Relativistic Heavy Ion Collision Physics Huan Z. Huang 黄焕中 Department of Physics and Astronomy University of California, Los Angeles

Recent STAR Results on NPE and Hyperon-Hyperon Correlations Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles,

Huan Zhang.ppt

The department of Nuclear Physics The department of Theoretical Physics

Comments on Neutrinoless Double Beta Decay Experiments Huan Zhong Huang ( 黄焕中 ) Department of Physics and Astronomy University of California, Los Angeles

Huan Chaco

The department of Nuclear Physics The department of Theoretical Physics The department of Particle Physics The Department of Applied Nuclear Physics The

Department Department of Physics Physics

Searches for Exotic Particles and Phenomena at RHIC Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles, CA 90095-1547

Physics of Running - Department of Physics

Department ofPhysics Department of Physics

UMD Department of Physics - UMD Physics

DEPARTMENT OF PHYSICS Physics

Parton Model & Parton Dynamics Huan Z Huang Department of Physics and Astronomy University of California, Los Angeles Department of Engineering Physics

FAR EAST AND BACK FR: TUYAN HUAN TO: TUYON-HUAN · title: far east and back fr: tuyan huan to: tuyon-huan subject: far east and back fr: tuyan huan to: tuyon-huan keywords

PHYSICS DEPARTMENT

Penda Huan

Opportunities for Exotic Particle Searches in STAR @RHIC Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles,

Department of Physics Department of Mathematics Milliya ...milliyasrcollege.org/sites/default/files/upload/Physics Maths knowled… · Department of Physics Department of Mathematics

Heavy Quark Probes of Hadronization of Bulk Matter at RHIC Huan Zhong Huang Department of Physics and Astronomy University of California at Los Angeles

STAR Physics Highlights Huan Zhong Huang Department of Physics and Astronomy University of California Los Angeles @ShanDong University Oct. 16-18, 2003

Probing Properties of QCD Matter with Strange and Heavy Quarks Huan Zhong Huang 黄焕中 Department of Physics and Astronomy University of California Los Angeles,

RHIC Experimental Status & Future Outlook Huan Zhong Huang Department of Physics and Astronomy University of California, Los Angeles June 28-29 @ Shanghai

Department of Physics - Department of Physics | Montana