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Nuclear  and  Hadron   Physics Nuclear  and  Hadron   Physics

Nuclear and Hadron Physics - PowerPoint Presentation

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Nuclear and Hadron Physics - PPT Presentation

The theory activities within INFN Maria Colonna Laboratori Nazionali del Sud Catania Heavy Ion Collisions QGP phenomenology Neutron stars Hadron ID: 785646

nuclei nuclear lns hadron nuclear nuclei hadron lns exotic models catania neutron matter heavy structure effective 2011 interactions field

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Slide1

Nuclear

and

Hadron Physics (The theory activities within INFN)

Maria Colonna

Laboratori Nazionali del Sud (Catania

)

Slide2

Heavy

Ion Collisions QGP phenomenology Neutron stars

Hadron

Structure Hadronic matter Parton correlations

Nuclear MatterEoS and Phases

QCDHadron Physics

Nuclear Structure and Dynamics

Few-body systems Electro-weak probes Shell model

Algebraic models Mean-field and beyond Reactions with exotic nuclei

39%

38%

Total FTE: 75 (Individuals ~100)

23%

Main research lines

INFN

Postdoc

: 8

PhD

Students

: 11

Slide3

Few-body

systemsShell

model

Mean-field

and beyondReactions with exotic nuclei

Hadron Structure

HypernucleiNuclear matter

EoSHeavy Ion Collisions

QGP phenomenologyNeutron stars

Collaborations

with

many Universities and Research Institutes spread around the world (France, Germany, Russia, Spain, … China, Japan, US…) Strong link with experimental activities (proposals, joint papers

, PAC

participation

)

in Italy,

Europe

, US,

Japan…

Organization

of

Workshops

,

Schools

and Training

of

young

scientists

(ECT*, GGI)

Where ?

Slide4

Open key

questions:

Confinement ? Structure of hadrons ? What is the role

of

quarks

and self-interacting gluons in nuclei ?

Hadron Physics

Starting point: QCD The strong interaction

sector of SM of elementary particles

News on the Proton spin Transversity parton distribution

Pavia and Torino groupsAnselmino et al.,NPB 191,98(2009)Bacchetta

et al.PRL 107, 012001 (2011)

e p

 e’

π Xe + p  e’ (

π+ + π-) XSemi-inclusive DIS from HERMES from COMPASS Q2 ~1-4 GeV2momentum fractionSource: D.Lacroix

Slide5

From

quarks to nucleons and nuclei- New trends in Nuclear Forces:

Effective

Field

Theory: derive the nuclear force from QCD or QCD-inspired

LagrangiansFew-body systems

:Ab-initio calculations to study

boundor scattering states

Hyperspherical harmonicsLorentz Integral Transform (LIT)

Large effect of three-body force !Trento, Padova, Pisa

Shell

model calculations:

Use of

modern Vlow-k Studies of exotic nuclei,high spin22C is the last bound isotopechiral potentialCoraggio et al,Napoli

Phys.Rev

. C81,

064303 (2010)

Important

final

state

interactions

Trento

group

Slide6

Self-consistent

MF

calculations

(and

extensions

) are a powerful framework

to understand the structure of

medium-heavy nuclei. Source:

F.Gulminelli The concept

or EoS is widely employed in the astrophysical context (modelization

of neutron stars and supernova explosion)Effective interactions and nuclear EoS

Mean-field (MF),

Effective interactions

Nuclear levels Nuclear collective

motion(linear response

)Microscopic methods are used to construct effective interactions and nuclear EoS:BHF, CBF, FHNC , AFDMC (Catania, Lecce, LNS, Roma, Trento) Extrapolation to infinite nuclear matter: Equation of State (EoS)

Slater

determinant

Properties

of

the

crust

, mass vs.

radius

, …

Slide7

Properties

of single

particle and collective states in (exotic) nuclei

Milano

group

New exotic

collective modes : a way to test

the density dependence of the symmetry energy

E/A (ρ) = Es

(ρ) + Esym(ρ) β²

β=(N-Z)/AExperiment performed at LNLD.Montanari et al, Phys.Lett. B697 (2011) 288

Particle-core

coupling in

49Ca

- Pygmy Dipole

Resonance (PDR):The strength is connected to the size of the neutron-skin Low density behavior of Esym PREX experiment (Neutron radius) at JlabRoca-Maza et al,PRC85,024601(2012)

Neutron

center

of

mass

Proton center

of

mass

Isovector

dipole

response

PDR

GDR

Probing

the nature

of

particle-core

coupling

(PVC

model

)

in

odd

nuclei

with

gamma

spectroscopy

and

heavy-ion

transfer

reactions

Slide8

Reaction

dynamics: from nuclei to new phases of nuclear matter

Matching

of structure and reaction theories

Reactions with

very exotic nuclei, like transfer and break-up

Two-particle transfer reactions as a probe of

nuclear pairing Advanced quantum models by Pisa and Padova

groups

Role

of Coulomb and nuclear

potential in theexcitation

of PDR and GDR

Catania - Padova collaborationE.G.Lanza et al, PRC 84, 064602 (2011)Phenomenology of Heavy Ion Collisions at Intermediate Energies : a way

to

explore

the

Nuclear

Matter

phase

diagram

TDHF

(and

extensions

)

Semi-classical

approximation

:

time

evolution of the one-body

distribution function in phase space f(

r,p

,t

):

using

effective

interactions

E (

MeV

)

Matching

EoS

and

transport

theories

Z

E.De

Filippo

et

al

(Chimera

coll

),

submitted

Fragmentation

events

(35

MeV

/A)

Fragment

N/Z:

Experiment-Theory

comparison

LNS

group

DREB2012

Slide9

BULK

(

pT~T)

MINIJETS

(

p

T

>>T,LQCD)

CGC (x

<<1)Gluon saturation

Heavy Quarks (mq>>T,LQCD)

Microscopic MechanismMatters!

Initial Conditions

Quark-Gluon Plasma

Hadronization

Ultra-relativistic HIC and QGP

PhenomenologyLNS: Partonic transport theories: a way to link QCD effective Lagrangiansand lQCD predictions to exp. observables An example: Elliptic flow and QGP viscosityTorino: Strangeness suppression

New

exotic

non-equilibrium

phases

(

Color Glass Condensate

)

Firenze

:

Hydrodynamical

models

Hadronization

and

statistical

models

x

y

z

p

x

p

y

Hadron

abundance

:

Statistical

models

works

for

all

iniitial

conditions

:

e+e-

,

pp

, AA

collisions

Becattini

,

Castorina

et al,

Eur

. Phys. J. C (2010) 66: 377–386

Slide10

A

large

variety of approaches and methods, but in several casesa common goal can be

identified

ex.

E

xotic systems and symmetry energy

Contiguity between nuclear

and hadron physics-ex. New nuclear

forces, transitions to new phases

of matterin HIC and in neutron stars (hyperons, deconfined phase)

Strong collaboration between experimentalists and theoristsonly in some sectors, however

synergies are increasing and

encouraged by INFN

theoretical and experimental

Committees

Slide11

Other funding

1) Quark-Gluon-Plasma and high energy collisionsUniversities involved:

Firenze

(

F.Becattini

), Catania, Torino, Torino Politec.

2) Stucture and dynamics of nuclei

beyond the valley of stability

Universities involved:Padova

(A.Vitturi), Catania, Napoli, Pavia, Trento MIUR-PRIN 2011-2013 MIUR-FIRB 2010-2014QCD phases,

field-theory models and transport theories: a systematic approachto the phenomenology of heavy

ion collisions

at LHCCatania Univ.

(V.Greco) ---

Torino Univ. (

C.Ratti) ERC --- Starting Grant 2011-2016Dynamics of the Quark Gluon PlasmaCatania Univ. (V.Greco) E.U.FP7 – I3HP2 Hadron Physics 2-3 (2008-2012)Study of Strongly Interacting Matter European Network + JRA(several INFN sites)

Slide12

New

computing

centers -2010 A single central cluster (Project CSN4cluster) in Pisa-128 nodes for serial and

parallel

jobs

-Accessible via GRID -2011 “Memory driven

” facility with high RAM/CORE ratio-Exploited

by nuclear theorists6-core, 32 GB RAM, 2 TB HD

-Local access

Slide13

Incontro

Nazionale di Fisica

Nucleare

12-14 Novembre 2012, INFN-LNS Catania

Comitato Promotore:

C.Agodi

(LNS)M.Colonna

(LNS)A.Gargano (NA)P.Gianotti (LNF)A.Guglielmetti (LNGS)

A.Kievsky (PI)S.Lenzi (PD)D.Napoli (LNL)

M.Radici (PV)P.Rossi (LNF)E.Scapparone(BO)E.Vigezzi (MI)Comitato Locale:

G.F.Burgio (CT)M. La Cognata (LNS)E.Lanza (CT)A.Musumarra (LNS)S.Pirrone (CT)G.Verde (CT)