The theory activities within INFN Maria Colonna Laboratori Nazionali del Sud Catania Heavy Ion Collisions QGP phenomenology Neutron stars Hadron ID: 785646
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Slide1
Nuclear
and
Hadron Physics (The theory activities within INFN)
Maria Colonna
Laboratori Nazionali del Sud (Catania
)
Slide2Heavy
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
Slide3Few-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 ?
Slide4Open 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
Slide5From
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
Slide6Self-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
, …
Slide7Properties
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
Slide8Reaction
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
Slide9BULK
(
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
Slide10A
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
Slide11Other 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)
Slide12New
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
Slide13Incontro
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)