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Particle Physics Theory

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### ParticlePhysicsTheory

in Austria

RECFA Meeting, Vienna, March 11, 2011

A.H. Hoang

University of Vienna

- Locations
- Research Groups & Numbers
- TopicalPhysics Research Overview
- Conclusions

ParticlePhysicsTheory

Locations and Number of FTE’s*

Vienna

Innsbruck

Graz

* diploma students not counted

RECFA Meeting, Vienna, March 11, 2011

ParticlePhysicsTheory

Locations and Number of FTE’s (status 2011)*

Vienna: 68

- University of Vienna
- Vienna University of Technology
- Institute for High Energy Physics of the Austrian Academy of Science (HEPHY)
- Institute for Atomic and Subatomic Physics (Atominstitut)

Innsbruck: 1

- University of Innsbruck

Graz: 26

- Karl-Franzens-Universität Graz

* all but diploma students are counted

RECFA Meeting, Vienna, March 11, 2011

Vienna: 68

Project Leaders and Research Areas

- University of Vienna
- Vienna University of Technology
- Institute for High Energy Physics of the Austrian Academy of Science (HEPHY)
- Institute for Atomic and Subatomic Physics (Atominstitut)

Faculty of Physics: 16 experimental groups (no particle physics)

3 theoretical groups

Particle Physics Group:

A. Hoang (P)

H. Neufeld (assP)

W. Grimus (assP)

H. Hüffel (assP)

B. Hiesmayr (PD)

A. Bartl (emer)

E. Ecker (ret)

appointed 2010*

Collider and Jet Physics

Precision and perturbative QCD

Low energy hadron dynamics (chiral perturbation theory)

SUSY phenomenology (LHC and ILC)

Neutrino physics

Quantum entanglement

Mathematical Physics Group:+

J. Yngvason (P)

H. Grosse (assP)

G. Lechner (PD)

H. Steinacker (PD)

Gravity

Deformed quantum field theory

Matrix models

* from Max-Planck-Institute Munich

+ with particle physics activities

RECFA Meeting, Vienna, March 11, 2011

Vienna: 68

Project Leaders and Research Areas

- University of Vienna
- Vienna University of Technology
- Institute for High Energy Physics of the Austrian Academy of Science (HEPHY)
- Institute for Atomic and Subatomic Physics (Atominstitut)

Faculty of Physics: 4 institutes (1 theoretical physics)

1 group “Fundamental Interactions”

Particle Physics Group:

A. Rebhan (P)

H. Balasin (assP)

D. Grumiller (juniorP)

R. Rashakov (gP)

J. Knapp (assP)

A. Schmitt (assP)

H. Skarke (PD)

promoted 2008

QCD at extreme condition (thermal, high pressure)

String theory

Gravity and black holes

Supersymmetry

Non-commutative field theory

RECFA Meeting, Vienna, March 11, 2011

Vienna: 68

Project Leaders and Research Areas

- University of Vienna
- Vienna University of Technology
- Institute for High Energy Physics of the Austrian Academy of Science (HEPHY)
- Institute for Atomic and Subatomic Physics (Atominstitut)

Emphasis of experimental particle physics,

small theory group

Particle Physics Group:

SUSY phenomenology (LHC and ILC)

Perturbative QCD, sum rulesRelativistic hadronic bound states

H. Eberl (pStaff)

W. Lucha (pStaff)

RECFA Meeting, Vienna, March 11, 2011

Vienna: 68

Project Leaders and Research Areas

- University of Vienna
- Vienna University of Technology
- Institute for High Energy Physics of the Austrian Academy of Science (HEPHY)
- Institute for Atomic and Subatomic Physics (Atominstitut)

1 formal institute of the VUT:

Emphasis of experimental particle physics

Larger nuclear physics theory group, small particle physics theory group

Particle Physics Group:*

M. Faber (pStaff)

H. Leeb (pStaff)

Theory of nuclear reactionsHadronic bound states

* with substantial nuclear physics component

RECFA Meeting, Vienna, March 11, 2011

Project Leaders and Research Areas

Graz: 26

- Karl-Franzens-Universität Graz

Faculty of Natural Sciences: 9 Institutes (1 Physics Institute)

1 area Theoretical Physics (cond. matter + particle)

Particle Physics Group:

R. Alkofer (P)

C. Gattringer (P)

C.B. Lang (P)

W. Plessas (P)

W. Scheiger (P)

B.J. Schäfer (PD)

appointed 2005 *

Lattice QCD

Non-perturbative QCD

Thermal QCD

Perturbative QCD,

Hadronic bound states

appointed 2005 +

* from University of Tübingen

+ from University of Regensburg

RECFA Meeting, Vienna, March 11, 2011

Project Leaders and Research Areas

Innsbruck: 1

- University of Innsbruck

Faculty of Mathematics, Computer Science and Physics: 7 Institutes

1 Theoretical Physics Institute

Astro and Particle Physics Group:

Hadronic bound states

Proton spin and properties

S. Bass (PD)

RECFA Meeting, Vienna, March 11, 2011

(particle physics)

(mathematical physics)

RECFA Meeting, Vienna, March 11, 2011

(particle physics)

(mathematical physics)

2009

- Uni Graz: substantial increase (+2 full Prof + FWF Graduate School “Hadrons in Vacuum, Nuclei and Stars” (2006))
- Uni Vienna (particle): (2 full Prof + 4 ass Prof)2004 (2 full Prof + 2 Uni Assistant [6 year positions])2011
- Vienna Tech. Uni.: (2 full Prof + 2 ass Prof)2004 (1 full Prof + 1 ass Prof)2011
- Overall decline in permanent positions.
- Development towards fewer professor ships and more PD-type positions.

CERN crisis

?

2004

2011

2018

RECFA Meeting, Vienna, March 11, 2011

Research in (some) Numbers (status 2011, as of today)

Current FWF/EU funded single projects:

14

Current FWF/EU funded networks:

6

Current FWF funded graduate schools:

1

International collaborations:

> O(100)

Regular International Meetings:

Schladming Winter School for Theoretical Physics (Graz)

Central European Seminar (former Triangle Meeting) (Uni Vienna)

Oberwölz Workshop in Strong Interactions (Graz)

RECFA Meeting, Vienna, March 11, 2011

Research in (some) Numbers (status 2011, as of today)

Graz (3): DFG SFB TR55 + EU FP7 +STRONGnet

Current FWF/EU funded single projects:

VTU (2): ESF RNP + FWF I192 (Vienna-ITEP Moscow)

14

UV+HEPHY (1): FWF I297 (Vienna-Würzburg)

Current FWF/EU funded networks:

6

Current FWF funded graduate schools:

1

FWF Graduate School “Hadrons in Vacuum, Nuclei and Stars” (Graz,2006, max 12 years)

FWF Graduate School “Particles and Interactions” (Vienna,2006)

future

[Invited to submit main application (9.3.2011)]

International collaborations:

D-A-CH Cooperation (FWF+DFG+SNF): joint application at one single funding agency.

> O(100)

Recently: higher success rate for single project applications at the FWF.

Regular International Meetings:

Schladming Winter School for Theoretical Physics (Graz)

Central European Seminar (former Triangle Meeting) (Uni Vienna)

Oberwölz Workshop in Strong Interactions (Graz)

Development toward situation with:

Personal View:

- fewer permanent positions (younger Profs)
- very good oportunities
- more 3rd party funded positions
- many 3rd party funded students
- more international competition
- improved outreach (FAKT)

(Fachausschuss für Kern- und Teilchenphysik)

2018

2004

2011

RECFA Meeting, Vienna, March 11, 2011

QCD: 70% of all project leaders, at all Austrian institutions

- Theory of nucleon interactions
- Hadronic bound states
- Lattice gauge theory
- Thermal QCD (extreme conditions)
- Chiral perturbation theory
- Collider and Jet Physics
- Structure functions
- Perturbative & precision QCD
- Monte-Carlo Tuning
- AdS/CFT correspondence

Lattice & low-energy QCD

Autria: Center for QCD

High-energy, perturbative QCD

QCD at finite T and pressure

Collider QCD & flavor physics

Effective theories for QCD

New ways to solve QCD

BSM physics: 20% of all project leaders, at Uni Vienna, TU Vienna

- SUSY phenomenology
- Grand Unified Theories
- Neutrino Physics

QFT, Gravity & String Theory: 30% of all project leaders, at Uni Vienna, TU Vienna,

- String theory, matrix models
- Non-commutative QFT
- Gravity & quantum gravity

Quantum Entanglement: 4% of all project leaders, at Uni Vienna

- Decoherence
- Quantum erasor

RECFA Meeting, Vienna, March 11, 2011

LatticeGauge Theory

Prelovsek, Draper, Lang, Limmer, Liu, Mathur, Mohler

2010

Spectrum results for π-π states compatible with existence of Tetraquark states (qqqq).

attractive

repulsive

RECFA Meeting, Vienna, March 11, 2011

Dyson Schwinger Equation

Blank, Krassnigg

2010

Relation between Green functions from equation of motion.

Require approximations and interaction models for solutions.

Chiral phase transition interaction dependent.

RECFA Meeting, Vienna, March 11, 2011

Relativistic Quark Models (Baryons)

Plessas, Melde 2010

Baryon spectrum and form factors predictable.

Electric and magnetic form factors

spectrum

RECFA Meeting, Vienna, March 11, 2011

Chiral Perturbation Theory

Effective theory for low energy dynamics of the lightest mesons (Goldstone bosons of chiral symmetry breaking).

Chiral extrapolation to physical meson masses for lattice results for low-energy constants.

Ecker, Masjuan, Neufeld 2010

Electromagnetic effects and Vus determination from Kl3 decays.

Cirigliano, Giannotti, Neufeld 2008

RECFA Meeting, Vienna, March 11, 2011

QCD Sum Rules for D, DsDecay Constants

Lucha etal. 2009 - 2011

Use perturbative QCD, causality and quark-hadron duality to constrain non-perturbative parameters.

Agreement with lattice and experiment for improved sum rule algorithm.

Ds

D

fD = (206.2 ± 7.3OPE ± 5.1syst) MeV fDs = (245.3 ± 15.7OPE ± 4.5syst) MeV

RECFA Meeting, Vienna, March 11, 2011

Multi-Loop Calculations

Hoang, Stahlhofen 2011

Top threshold production at a future ILC.

O(104) Feynman diagrams for NNLL order anomalous dimension of quark production current.

Stabilization of NNLL prediction.

RECFA Meeting, Vienna, March 11, 2011

QCD Factorization in Soft-Collinear-EffectiveTheory

Abbate, Fickinger, Hoang, Mateu, Stewart 2011

Predictions of thrust distribution at NNNLL order.

RECFA Meeting, Vienna, March 11, 2011

Top Quark MassReconstruction

Fleming, Hoang, Mantri, Stewart 2008

SCET factorization allows for theoretical computation of invariant mass distribution accounting for non-perturbative effects. (e+e-)

ATLAS

RECFA Meeting, Vienna, March 11, 2011

Quark Gluon Plasma

Rebhan, Romatschke, Strickland, Attems 2005, 2008

Proper interpretation of observed thermalization properties in relativistic heavy ion collisions need to account for non-Abelian plasma instabilities.

Effective theory for non-Abelian plasma instabilities and numerical simulations.

RECFA Meeting, Vienna, March 11, 2011

SUSY Phenomenology

Bartl, Majoretto, Eberl etal. 2009, 2010

Impact of flavor structure of SUSY extensions of the SM on SUSY searches at the LHC.

Squark mixing effects have strong impact of observed distributions in decay chains.

RECFA Meeting, Vienna, March 11, 2011

Neutrino Physics

Grimus, Lavoura 2009

Scales of Dirac and Majorana mass terms in Sea-Saw mechanism model-dependent.

Can be realized in multi-Higgs doublet model.

No visible effect at Hadron colliders.

Enhanced charged Higgs production in electron-electron collisions.

RECFA Meeting, Vienna, March 11, 2011

Black Hole Physics

Grumiller, Johansson 2008

Mathematical properties of black holes relevant for many applications outside gravity due to dualities. (Mathematical equivalences to other problems).

RECFA Meeting, Vienna, March 11, 2011

Quantum Entanglement & Decoherence

Bertelmann, Grimus, Hiesmayr

EPR quantum entanglement basis of measurement of time-dependent CP-violation.

Possible intrinsic quantum mechanical (particle dependent) decoherence potentially measureable experimentally.

High experimental sensitivity could distinguish decoherence models.

RECFA Meeting, Vienna, March 11, 2011

Conclusions

- Austrian particletheoryvery strong in QCD.
- Weak in BSM physics(flavor+collider) and astro-particlephysics.
- Verylocalizedcentersforphysics.
- Verygoodstudents.
- International connectionsexcellent.
- On theway: modern andcompetitivestructures.
- Outreachtogeneralpublic must bepartofscientificlife.
- Personal view: Austria/Vienna = landofshortways.
- Personal view: Opportunitiestocreate strong andvisiblegroups.

Thanksyou.

RECFA Meeting, Vienna, March 11, 2011

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