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Nucleus-Nucleus Collisions in NA49-future. An introduction for everybody. The main goal of studying nucleus-nucleus collisions in NA49-future is the investigation of the transition between two phases of strongly interacting matter:. gas of hadrons. and. quark-gluon plasma. - PowerPoint PPT Presentation
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Nucleus-Nucleus Collisions in NA49-future
An introduction for everybody
The main goal of studying nucleus-nucleus collisions in NA49-future is the investigation of the transition between two phases of strongly interacting matter:
gas of hadrons
and
quark-gluonplasma
NA49-future
2
NA49-future aims to discover the critical point of strongly interacting matter
Tem
pera
ture
Baryochemical potentialNA49-future
Models of strong interactions predict a sharp phase boundary (1st order phase transition) between hadron gas
and quark-gluon plasma ending in a critical point
NA49 at the CERN SPSstudying collisions of
two lead nuclei (Pb+Pb)found evidence for
the transition betweenhadron gas and
quark-gluon plasma
NA49-future will study properties of this transition
in order to establish fundamental features of
strongly interacting matter
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The main ideas behind the NA49-future nucleus-nucleus program can be related to the well known properties of water
(water properties are determined by electro-magnetic interactions)
Phases of strongly interacting matterPhases of water
NA49-future
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w
N/
5
10
15
20
25
)1/2
F (GeV
0 1 2 3 4 5-1
0
1
2
FIT(A+A)-(p+p)
+/+
K
0.1
0.2
)1/2
F (GeV
0 5 10 15
) (M
eV)
+T
(K
100
200
300
A+A:NA49AGSRHICp+p
Collision energy
Pro
pert
ies o
f p
rod
uced
had
ron
sHeating curves of strongly interacting matter measuredby NA49 at the CERN SPS serve as evidence for a transition between hadron gas and quark-gluon plasma,
similarly the heating curve of water shows the transitions between the phases of water
Q (heat added)
100
0
Heating of water vapor
Heat used to vaporize water to water vapor
Heating of water
tem
pera
ture
(oC
)
Ice
NA49-future
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The phase diagram of water
is well established but
the properties of thetransition between hadron
gas and quark-gluon plasmastill have to be uncovered
1st order phase transition NA49-future
Baryochemical potential (MeV)
Tem
pera
ture
(M
eV
)
NA49-future
??
critical point
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In our daily life ...
droplets of water
droplets of stronglyinteracting matter
10-12
the properties of stronglyinteracting matter can bestudied only in collisions
of heavy nucleiNA49-future
7
COLLISIONS OF TWO NUCLEI -the only tool to study properties of
strongly interacting matter in the laboratory
NA49-future
UrQMD
produced particles measuredin the NA49 apparatus
(scale 10 m)
snapshot of the producedmatter after the collision
(scale 10-14 m)
8
LHC
SPS
NA49-future
NA49-future
NA49-future at the CERN SPS
9
-future
NA49-future
10
10 20 30 40 80 158
energy (A GeV)
10 20 30 40 80 158
In+In
energy (A GeV)
Pb+Pb
C+C
Si+Si
= 2∙106 registered collisions
NA49 NA49-future
NA49-future
NA49-future plans to perform a comprehensive scan in energy and size of colliding nuclei to study the properties of the transition between hadron gas and quark gluon plasma
p+p
11
10 20 30 40 80 158
energy (A GeV)
In+In
C+C
Si+Si
= 2∙106 registered collisions
NA49-future
New data registered by NA49-future
p+p
ener
gy (A
GeV
)
may lead to a discovery of the criticalpoint of strongly interacting matter
by an observation of a hill of fluctuations
p+pC+C
Si+Si
In+In
20
4080
158
30
12
10 20 30 40 80 158
energy (A GeV)
In+In
C+C
Si+Si
= 2∙106 registered collisions
NA49-future
New data registered by NA49-future
p+p
will uncover properties of the transitionbetween hadron gas and quark-gluonobserved by NA49 in Pb+Pb collisions
10 20 30 40 80 158
energy (A GeV)
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The NA49-future Collaboration:
101 physicists from 24 institutes and 15 countries:
University of Athens, Athens, GreeceUniversity of Bari and INFN, Bari, ItalyUniversity of Bergen, Bergen, NorwayUniversity of Bern, Bern, SwitzerlandKFKI IPNP, Budapest, HungaryCape Town University, Cape Town, South AfricaJagellionian University, Cracow, PolandJoint Institute for Nuclear Research, Dubna, RussiaFachhochschule Frankfurt, Frankfurt, GermanyUniversity of Frankfurt, Frankfurt, GermanyUniversity of Geneva, Geneva, SwitzerlandForschungszentrum Karlsruhe, Karlsruhe, GermanySwietokrzyska Academy, Kielce, PolandInstitute for Nuclear Research, Moscow, RussiaLPNHE, Universites de Paris VI et VII, Paris, FrancePusan National University, Pusan, Republic of KoreaFaculty of Physics, University of Sofia, Sofia, BulgariaSt. Petersburg State University, St. Petersburg, RussiaState University of New York, Stony Brook, USAKEK, Tsukuba, JapanWarsaw University of Technology, Warsaw, PolandUniversity of Warsaw, Warsaw, PolandRudjer Boskovic Institute, Zagreb, CroatiaETH, Zurich, Switzerland
NA49-future
