scientific council 19.01.2006 a. olchevski jinr particle physics road map ensure scientific...

Scientific Council 19.0Scientific Council 19.01.20061.2006

A. OlchevskiA. Olchevski

JINR Particle Physics JINR Particle Physics road maproad map

ensure scientific excellence of JINR

maximise the scientific output within the resources

support and develop existing facilities and infrastructure

The role of the Road Map is to:

Alexandr



Worldwide Worldwide Priorities in particle Priorities in particle physicsphysics

the origin of mass; the origin of mass; the properties of neutrinosthe properties of neutrinos and and

astro(particle)physics;astro(particle)physics; the properties of the strong interaction the properties of the strong interaction

including properties of nuclear matter; including properties of nuclear matter; the origin of the matter-antimatter the origin of the matter-antimatter

asymmetry in the universe; asymmetry in the universe; the unification of particles and forces the unification of particles and forces

including gravity;including gravity;



JINR particle physics programme JINR particle physics programme andand

worldwide worldwide Priorities in particle Priorities in particle

physicsphysics Priorities in particle physPriorities in particle phys the the origin of mass;origin of mass; the properties of the properties of neutrinos;neutrinos; astrophysicsastrophysics the properties of the properties of the strong interactionthe strong interaction including properties of including properties of nuclear matter; nuclear matter; the origin of the the origin of the matter-antimattermatter-antimatter asymmetryasymmetry in the universe; in the universe; the the unification of particles unification of particles and forcesand forces including gravity; including gravity;

JINR particle physics:

Heavy and light ion physics

Nucleon (spin) structureNon perturbative QCD Rare processes (K decays, CP violation)

Hadron and lepton colliders physics

Neutrino physics, astrophysics



Theoretical physics

In order JINR shall play a leading role in particle physics, it is important that theoretical research is closely related to and supporting the experimental program.

Computing

Also an effective participation in physics analysis of experiments requires adequate computing infrastructure and connectivity.



Thermal history of the UniverseThermal history of the Universe

2.7 0K

BECQUERELBECQUEREL

PHENIXPHENIX

STARSTAR

NA49NA49

FAZAFAZA

MARUSYAMARUSYA

ALICEALICE

NA45NA45

CMSCMSLHCLHC

RHICRHIC

SPSSPS

NUCLOTRONNUCLOTRON

Life SciencesLife Sciences

State of Nuclear MatterState of Nuclear Matter



ALICE Physics GoalsALICE Physics GoalsALICE PPR, 2004, J. Phys. G: Nucl. Part. Phys. 30, 1517-1763ALICE PPR, 2004, J. Phys. G: Nucl. Part. Phys. 30, 1517-1763

➮ Heavy ion observables in ALICEHeavy ion observables in ALICE Particle multiplicitiesParticle multiplicities Particle spectraParticle spectra Particle correlationsParticle correlations FluctuationsFluctuations Jet physicsJet physics Direct photonsDirect photons DileptonsDileptons Heavy-quark and quarkonium productionHeavy-quark and quarkonium production

➮ p-p and p-A physics in ALICE➮ Physics of ultra-peripheral heavy ion collisions➮ Contribution of ALICE to cosmic-ray physics



JINR team has leading positions in some physics tasks. Convener JINR team has leading positions in some physics tasks. Convener of one of the Alice physics groups is JINR physicist Y. Belikov.of one of the Alice physics groups is JINR physicist Y. Belikov.

New adequate transport model and hydro calculations is under creation now in Dubna ALICE group together with our collegues: R.Lednicky, N.Amelin (Dubna), Y.Sinyukov (Kiev).

Momentum correlations (HBT) G.I.Kopylov & M.I.Podgorecky suggested to study the space - time parameters of sources producing identical particles

DileptonsDileptons The increase of width by factor 3 (D.Lissauer and E.Shuryak, 1991) and decrease of and masses by up to 150 MeV /c2 (M.Asakava and S.M.Ko, 1994) because of partial chiral symmetry restoration during the first-order phase transition to the QGP or to the mixed phase (preQGP) according to the conception of A.N.Sisakyan, A.S.Sorin and G.M.Zinoviev.

ALICE Physics Goals (cont.)ALICE Physics Goals (cont.)



State of Nuclear MatterState of Nuclear MatterRunning experimentsRunning experiments NUCLOTRON (JINR) experiments MARUSYA, DELTA NUCLOTRON (JINR) experiments MARUSYA, DELTA the temperature and baryon density of the matter formed during the collision of nuclei the temperature and baryon density of the matter formed during the collision of nuclei

with atomic numbers ~ 200 at the collision energies ~ 5 GeV/nucleon can be sufficient with atomic numbers ~ 200 at the collision energies ~ 5 GeV/nucleon can be sufficient for the for the mixed phasemixed phase formation. formation.

THERMALIZATION (IHEP, JINR)THERMALIZATION (IHEP, JINR)

STAR, PHENIX (BNL) STAR, PHENIX (BNL) a new state of dense and hot nuclear matter discovered (reported on April 18, a new state of dense and hot nuclear matter discovered (reported on April 18,

2005)2005)

In build experiment:In build experiment: ALICE (CERN)ALICE (CERN)

Future project:Future project: NUCLOTRON NUCLOTRON CBM (FAIR)CBM (FAIR)



Nucleon (spin) structureNucleon (spin) structure

Generalized Parton Distributions (GPD)

This subject has a long and succesfull tradition in JINR starting with NA4 experiment at CERN, HERMES at DESY and today COMPASS



Nucleon (spin) structureNucleon (spin) structure



Nucleon spin structureNucleon spin structure HERMES (DESY)HERMES (DESY)

Running experiment:Running experiment: COMPASS (CERN) COMPASS (CERN)

First Measurement of the Transverse Spin Asymmetries of the Deuteron

STARSTAR

Future experiments:Future experiments: NUCLOTRONNUCLOTRON COMPASS after 2010COMPASS after 2010 Experiments at U-70Experiments at U-70 PAX (FAIR)PAX (FAIR)



Experiment DIRAC (CERN)Experiment DIRAC (CERN)

proposed by JINR and proposed by JINR and lead by L. Nemenovlead by L. Nemenov

Nonperturbative QCDNonperturbative QCD



Nonperturbative QCDNonperturbative QCD

Running experiments:Running experiments: DIRAC (CERN)DIRAC (CERN) NA48/2 NA48/2 (also measured pion scattering length)(also measured pion scattering length) Hadron programm of COMPASSHadron programm of COMPASS NUCLOTRON experiments NIS, etc. (JINR)NUCLOTRON experiments NIS, etc. (JINR)

Future:Future: NUCLOTRON NUCLOTRON PANDA (FAIR)PANDA (FAIR)



Rare processes (K decays, CP Rare processes (K decays, CP violation)violation)

JINR participation in JINR participation in CERN experiment CERN experiment NA48

wworld best orld best measurement of direct measurement of direct CP violation in K0 CP violation in K0 decaysdecays




JINR participation JINR participation in CERN in CERN experiment experiment NA48/2Spokesperson:V. Kekelidze

wworld best limit onorld best limit on direct CP direct CP violationviolation in charged K in charged K decaysdecays




JINR participation JINR participation in KEK experiment in KEK experiment E391a

wworld best limit onorld best limit on KK°°->->ππ°°νννν




Current projects:Current projects: NA48/2NA48/2 KEK experiment KEK experiment E391a

Future project:Future project: NA 48/3NA 48/3 OKA at U-70OKA at U-70 New experiments at CERN SPSNew experiments at CERN SPS

CP violation in B decays:CP violation in B decays: CDF and D0 experimentsCDF and D0 experiments Atlas and CMS Atlas and CMS



Standard Model and beyondStandard Model and beyond

•Top mass measurement, Top mass measurement,

•Higgs boson searches, Higgs boson searches,

•SUSY searches, SUSY searches,

•extra dimensions, ...extra dimensions, ...



JINR physicists contributed significantly to these JINR physicists contributed significantly to these results:results:•Higgs searches in LEP experiments; Higgs searches in LEP experiments; •Electroweak fits; Electroweak fits; •Measurements of W mass in LEP experiments; Measurements of W mass in LEP experiments; •Measurement of the top mass in CDF and D0Measurement of the top mass in CDF and D0




The State of the Higgs: Summer 2005The State of the Higgs: Summer 2005(J. Ellis talk at ICFA meeting)(J. Ellis talk at ICFA meeting)

Direct search limit: Direct search limit: mmHH > 114 GeV> 114 GeV

Electroweak fit sensitive to mElectroweak fit sensitive to mtt

Currently mCurrently mtt = 172.7 ± 2.9 GeV (previously m = 172.7 ± 2.9 GeV (previously mtt = 178 → 174.3) = 178 → 174.3)

Best-fit value: Best-fit value: mmHH = 91 = 91+45+45–32–32 GeV GeV

95% confidence-level upper limit:95% confidence-level upper limit:

mmHH < 186 GeV < 186 GeV, or , or 219 GeV219 GeV including direct limit including direct limit




Dubna

JINR CDF group had a leading role in the most precise top quark mass measurement

CDF and D0 experiments



ATLAS PhysicsATLAS Physics The various The various Higgs boson searchesHiggs boson searches, which resent some of the most challenging , which resent some of the most challenging

signatures,signatures, were used as benchmark processes for the setting of parameters that were used as benchmark processes for the setting of parameters that describe the detectordescribe the detector performance. High-resolution measurements of electrons, photons performance. High-resolution measurements of electrons, photons and muons, excellentand muons, excellent secondary vertex detection for t-leptons and b-quarks, high-secondary vertex detection for t-leptons and b-quarks, high-resolution calorimetry forresolution calorimetry for jets and missing transverse energy (ETjets and missing transverse energy (ET miss) are essential to miss) are essential to explore the full range of possibleexplore the full range of possible Higgs boson masses.Higgs boson masses.

Searches for Searches for SUSY SUSY set the benchmarks on the hermeticity and ETset the benchmarks on the hermeticity and ET miss capability of the miss capability of the detector,detector, as well as on b-tagging at high luminosity.as well as on b-tagging at high luminosity.

Searches for Searches for new heavy gauge bosonsnew heavy gauge bosons provided benchmark requirements for high- provided benchmark requirements for high-resolutionresolution lepton measurements and charge identification in the pT range as large as a lepton measurements and charge identification in the pT range as large as a few TeV.few TeV.

Signatures characteristic for Signatures characteristic for quark compositenessquark compositeness set the requirements for the set the requirements for the measurementmeasurement of very high-pT jets.of very high-pT jets.

The precision measurements of the The precision measurements of the W and top-quark masses, gauge boson W and top-quark masses, gauge boson couplings, CPcouplings, CP violation and the determination of the Cabibbo-Kobayashi-violation and the determination of the Cabibbo-Kobayashi-Maskawa unitarity triangleMaskawa unitarity triangle yielded benchmarks that address the need to precisely yielded benchmarks that address the need to precisely control the energy scale for jetscontrol the energy scale for jets and leptons, determine precisely secondary vertices, and leptons, determine precisely secondary vertices, reconstruct fully final states with relativelyreconstruct fully final states with relatively low-pT particles and trigger on low-pT low-pT particles and trigger on low-pT leptons.leptons.



JINR Physics activities in CMS:B-physics (BsJ/ +- K+K-)– JINR + Belarus Higgs (ZZ ll ) – Ukraine QCD (jet physics, diffraction) – JINR + Armenia + BelarusHeavy Ions– JINR + Georgia Special interest – dimuons with TeV invariant mass

CMS experiment



Beam Energy MeasurementBeam Energy Measurement Forward CalorimeterForward Calorimeter Forward TrackingForward Tracking Hadron CalorimeterHadron Calorimeter PhysicsPhysics

JINR participation in JINR participation in International Linear Collider International Linear Collider Physics and Detector R&DPhysics and Detector R&D




Current projects:Current projects: CDF, D0CDF, D0

In build projects: In build projects: LHC LHC ATLAS, CMSATLAS, CMS

Future:Future: International Linear International Linear

ColliderCollider

Top mass measurement, Higgs boson searches, Top mass measurement, Higgs boson searches, SUSY searches, extra dimensions, ...SUSY searches, extra dimensions, ...

Very clear road in this subject:Very clear road in this subject:



An ExampleThere are several elements which can be used for neutrino radiation in the suggested investigation. Chlorine and Bromine, for example, fulfil reasonably well the desired conditions. The reactions of interest would be: + 37Cl + 37 Ar + 79,81Br + 79,81Kr37Ar 37Cl 79,81Kr 79,81Br(34 days; K capture) (34 h; emission of positrons of 0.4 MeV) The experiment with Chlorine, for example, would consist in irradiating with neutrinos a large volume of Chlorine or Carbon Tetra-Chloride, for a time of the order of one month, and extracting the radioactive 37Ar from such volume by boiling. The radioactive argon would be introduced inside a small counter; the counting efficiency is close to 100%, because of the high Auger electron yield.

National Research Council of Canada, Division of Atomic Energy. Chalk River, 1946, Report PD-205.

Neutrino physics and Neutrino physics and astrophysicsastrophysics

Neutrino physics in JINR has been established by Bruno Pontecorvo – the inventor of neutrino detection and their oscillations.




Major features of the solar electron neutrino deficit is now understood (SNO)Antineutrino oscillates the same way as neutrino (Kamland)

SNO, SuperKamiokande, KamLAND and Borexino will provide results in the next few years that may point toward a next generation of non-accelerator experiments.Neutrino oscillations – the first confirmed laboratory evidence for Physics beyond the Standard Model



- Measurement of - Measurement of neutrino mass and its neutrino mass and its Majorana/Dirac origin Majorana/Dirac origin

- Measurement of - Measurement of θθ1313 in a in a new reactor experimentnew reactor experiment

Contemporary topics in neutrino physics:

- Appearance oscillation experiments





Completed experiments:Completed experiments: NOMAD, HARPNOMAD, HARPNeutrino cross section, Neutrino cross section, ππ/K production cross sections/K production cross sections

Current experiment:Current experiment: Borexino – solar neutrino physicsBorexino – solar neutrino physics

In Build:In Build: OPERA - OPERA - tau tau neutrino appearanceneutrino appearance TUS/NUCLON – space astroparticle physics experimentTUS/NUCLON – space astroparticle physics experiment

Future:Future: New generation neutrino and astrophysics experimentNew generation neutrino and astrophysics experiment



CURRENT RESOURCES REQUESTS IN JINR PARTICLE PHYSICS



ConclusionsConclusions

JINR program in particle physics covers the current JINR program in particle physics covers the current particle physics priorities.particle physics priorities.

The program is carried both in JINR and member The program is carried both in JINR and member states as well as in the largest accelerator centers. states as well as in the largest accelerator centers. In projects outside Dubna JINR physicists play an In projects outside Dubna JINR physicists play an important role, in some cases they initiated important role, in some cases they initiated experiments and/or lead experiments or their parts. experiments and/or lead experiments or their parts.

Long term future of particle physics program is Long term future of particle physics program is focused to polarized beam at NUCLOTRON, High focused to polarized beam at NUCLOTRON, High Luminosity LHC, FAIR project and ILC. Luminosity LHC, FAIR project and ILC.

scientific council 19.01.2006 a. olchevski jinr particle physics road map ensure scientific...

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