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Physics Goals of PANDA
Physics Goals of PANDA
The PANDA Project
The PANDA Project
The PANDA Detector (1)
The PANDA Detector (1)
The PANDA Detector (2)
The PANDA Detector (2)
PANDA and HESR
PANDA and HESR
HESR: Parameters
HESR: Parameters
HESR at FAIR
HESR at FAIR
Status of the PANDA Project (1)
Status of the PANDA Project (1)
Status of the PANDA Project (2)
Status of the PANDA Project (2)
Status of the PANDA Project (3)
Status of the PANDA Project (3)
PANDA – Hadron Spectroscopy Program (1)
PANDA – Hadron Spectroscopy Program (1)
PANDA – Hadron Spectroscopy Program (2)
PANDA – Hadron Spectroscopy Program (2)
?c (11S0) experimental error on M > 1 MeV
?c (11S0) experimental error on M > 1 MeV
PANDA – Hadron Spectroscopy Program (4)
PANDA – Hadron Spectroscopy Program (4)
PANDA – Hadron Spectroscopy Program (5)
PANDA – Hadron Spectroscopy Program (5)
PANDA – Hadron Spectroscopy Program (6)
PANDA – Hadron Spectroscopy Program (6)
PANDA – Hadron Spectroscopy Program (7)
PANDA – Hadron Spectroscopy Program (7)
Merits of Antiprotons (1)
Merits of Antiprotons (1)
Merits of Antiprotons (2)
Merits of Antiprotons (2)
Merits of Antiprotons (3)
Merits of Antiprotons (3)
Merits of Antiprotons (4)
Merits of Antiprotons (4)
Merits of Antiprotons (5)
Merits of Antiprotons (5)
}
}
Properties of Hadrons in Matter (2)
Properties of Hadrons in Matter (2)
Properties of Hadrons in Matter (3)
Properties of Hadrons in Matter (3)
Double
Double
Double
Double
Nucleon Structure (1)
Nucleon Structure (1)
Nucleon Structure (2)
Nucleon Structure (2)
Nucleon Structure (3)
Nucleon Structure (3)
Physics Program / Further Options (1)
Physics Program / Further Options (1)
Physics Program / Further Options (2)
Physics Program / Further Options (2)
Conclusions
Conclusions
Bild Trento
Bild Trento
Lord of Rings
Lord of Rings

Презентация: «Physics Goals of PANDA». Автор: Dagmar Hiltscher. Файл: «Physics Goals of PANDA.ppt». Размер zip-архива: 2798 КБ.

Physics Goals of PANDA

содержание презентации «Physics Goals of PANDA.ppt»
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1 Physics Goals of PANDA

Physics Goals of PANDA

? Introduction – The PANDA Project – PANDA and HESR – Status of the PANDA Project ? Physics Program of PANDA – Hadron Spectroscopy – Merits of Antiproton Physics – Properties of Hadrons in Matter – Double ?-Hypernuclei – Nucleon Structure – Options ? Conclusions

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

2 The PANDA Project

The PANDA Project

Properties of Hadrons in Matter

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

3 The PANDA Detector (1)

The PANDA Detector (1)

Detector requirements full angular acceptance and angular resolution for charged particles and ?, ?0 particle identification (?, K , e, ?) in the range up to ~ 8 GeV/c high momentum resolution in a wide energy range high rate capabilities, especially in interaction point region and forward detector : expected interaction rate ~ 107/s precise vertex reconstruction for fast decaying particles

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

4 The PANDA Detector (2)

The PANDA Detector (2)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

5 PANDA and HESR

PANDA and HESR

High Energy Storage Ring (HESR), proposed by P.K.

? Circumference 574 m ? Momentum (energy) range 1.5 to 15 GeV/c (0.8-14.1 GeV) ? Injection of (anti-)protons from RESR at 3.8 GeV/c ? Acceleration rate 0.1 GeV/c/s ? Electron cooling up to 8.9 GeV/c (4.5 MeV electron cooler) ? Stochastic cooling above 3.8 GeV/c

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

6 HESR: Parameters

HESR: Parameters

Experiment Mode

High Resolution Mode

High Luminosity Mode

Momentum range

1.5 – 8.9 GeV/c

1.5 – 15.0 GeV/c

Target

Pellet target with 4*1015 cm-2

Pellet target with 4*1015 cm-2

Number of stored Antiprotons

1*1010

1*1011

Luminosity

2*1031 cm-2 s-1

2*1032 cm-2 s-1

rms-emittance

1 mm mrad

1 mm mrad

rms-momentum resolution

10-5

10-4

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

7 HESR at FAIR

HESR at FAIR

FAIR Facility for Antiproton and Ion Research

HESR High Energy Storage Ring

Antiproton Physics at high Energies

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

8 Status of the PANDA Project (1)

Status of the PANDA Project (1)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

9 Status of the PANDA Project (2)

Status of the PANDA Project (2)

Example: Simulation of the PANDA interaction region with NEG-coated beam pipes at SMI

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

10 Status of the PANDA Project (3)

Status of the PANDA Project (3)

Example:

E.-M. Calorimeter (Pb WO4/PWO) Requirements: Fast Response Good energy resolution, even at low energies

Operation of crystals at –25°C Reduction of thermal quenching ? Increase of light yield by ? 400% ?

Best PWO energy resolution, ever measured

Development of Large Area APD‘s (together with Hamamatsu Photonics) Signals comparable to Photo-Multiplier Readout ? Operation in high magnetic fields

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

11 PANDA – Hadron Spectroscopy Program (1)

PANDA – Hadron Spectroscopy Program (1)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

12 PANDA – Hadron Spectroscopy Program (2)

PANDA – Hadron Spectroscopy Program (2)

Charmonium Spectroscopy (Many Inputs from P.K.)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

13 ?c (11S0) experimental error on M > 1 MeV

?c (11S0) experimental error on M > 1 MeV

hard to understand in simple quark models ?c’ (21S0) Recently seen by Belle, BaBar, Cleo Crystal Ball result way off hc(1P1) Spin dependence of QQ potential Compare to triplet P-States LQCD ?? NRQCD States above the DD threshold Higher vector states not confirmed ?(3S), ?(4S) 1st radial excitation of P wave states Narrow D wave states, only ?(3770) seen Sensitive to long range Spin-dependent potential Nature of the new X(3872), X(3940), Y(3940) and Z(3940)

PANDA – Hadron Spectroscopy Program (3)

Experiments cc :

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

14 PANDA – Hadron Spectroscopy Program (4)

PANDA – Hadron Spectroscopy Program (4)

Charmonium Hybrids

? Hybrids predicted in various QCD models (LQCD, bag models, flux tubes...) ? Some charmonium hybrids predicted to be narrow (exotic quantum numbers) ? Production cross section similar to other charmonia (~150pb)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

15 PANDA – Hadron Spectroscopy Program (5)

PANDA – Hadron Spectroscopy Program (5)

Charmonium Hybrids

42] K. Juge, J. Kuti, and C. Morningstar, Phys. Rev. Lett. 90, 161601 (2003).

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

16 PANDA – Hadron Spectroscopy Program (6)

PANDA – Hadron Spectroscopy Program (6)

Glueballs (gg)

Predictions: Masses: 1.5-5.0 GeV/c2 (Ground state found? ; Candidates for further states?) Quantum numbers: Several spin exotics (oddballs), e.g. JPC = 2+- (4.3 GeV/c2 ) Widths: ? 100 MeV/c2 – Decay into two lighter glueballs often forbidden because of q.-n. – No mixing effects for oddballs

Decays: ??, ??, ??

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

17 PANDA – Hadron Spectroscopy Program (7)

PANDA – Hadron Spectroscopy Program (7)

Open Charm States

New observations

The DS± spectrum |cs> + c.c. was not expected to reveal any surprises, but ... Potential model Old measurements New observations (BaBar, CLEO-c, Belle) Or these are molecules ? Most recent state (BaBar): DsJ(2680)+ D0 K+

Ds1 (2458)

*

Ds0 (2317)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

18 Merits of Antiprotons (1)

Merits of Antiprotons (1)

Resolution of the mass and width is only limited by the (excellent) beam momentum resolution

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

19 Merits of Antiprotons (2)

Merits of Antiprotons (2)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

20 Merits of Antiprotons (3)

Merits of Antiprotons (3)

?Crystal Ball: typical resolution ~ 10 MeV ?Fermilab: 240 keV ?PANDA: ~20 keV

? ?p/p ~ 10-5 needed

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

21 Merits of Antiprotons (4)

Merits of Antiprotons (4)

pp-cross sections high ? Data with very high statistics

Low final state multiplicities: Clean spectra, Good for PWA analyses

Example: pp ? ?0?0?0 (LEAR) ? f0(1500) = best candidate for Glueball ground state

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

22 Merits of Antiprotons (5)

Merits of Antiprotons (5)

High probability for production of exotic states

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

23 }

}

}

Properties of Hadrons in Matter (1)

p?s interact with p within 1 fm At appropiate ECM(pp) J/y, y?, cc –systems are formed (b ? 0.8 - 0.9)

Effects to be considered: Fermi motion of nucleons (? 200 MeV) Collisional broadening of states (? 20 MeV) Mass shifts and broadening of cc-states in matter Mass shifts and modifications of spectral functions of open charm states (D±)

Trivial

Chiral dynamics, Partial restoration of chiral symmetry in hadronic environment

P.K., see also talks of T. Yamazaki and N. Herrmann

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

24 Properties of Hadrons in Matter (2)

Properties of Hadrons in Matter (2)

Predictions:

Hidden charm states (cc): Small mass shifts: 10 - 100 MeV (Gluon Condensate) Sizeable width changes

Open charm states (Qq):

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

25 Properties of Hadrons in Matter (3)

Properties of Hadrons in Matter (3)

stot (J/? N)

Important for QGP

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

26 Double

Double

-Hypernuclei (1)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

27 Double

Double

-Hypernuclei (2)

Current state of the art ? detection resolution : 2 KeV (KEK E419) Current state of the art p detection resolution : ?E = 1.29 MeV Finuda Collaboration, PLB622: 35-44, 2005

Solid state detector (diamond or silicon) compact : thickness ~ 3 cm high rate capability high resolution capillar (2D) or pixel (3D)

position sensitive Germanium ? detector (like Vega or Agata)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

28 Nucleon Structure (1)

Nucleon Structure (1)

Related processes:

Prediction (from ?? ? pp): ? 15pb (?s = 3.6 GeV) Simulation: Several thousand events/month (|cos??|) < 0.6 Problem: Background from ?0?(420 pb) ; ?0 ?0 (17500 pb)

Timelike GPD?s

Spacelike GPD?s

Timelike GPD?s

Wide Angle Compton Scattering

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

29 Nucleon Structure (2)

Nucleon Structure (2)

Annihilation to:

or

Contribution to Parton Distribution Functions: DY-Dilepton-Production:

Comparison between predictions and data Check of Factorisation

Boer-Mulders-Function

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

30 Nucleon Structure (3)

Nucleon Structure (3)

Timelike Proton Form Factor

Present situation: |GM|timelike ? 2xGM spacelike Assumption: |GE| = |GM|

PANDA: Much wider angular acceptance and higher statistics Measure for higher Q2 Check timelike/spacelike equality Measure |GE| and |GM| separately:

29 GeV2

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

31 Physics Program / Further Options (1)

Physics Program / Further Options (1)

– Baryon Spectroscopy New states, Quantum numbers and decay rates

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

32 Physics Program / Further Options (2)

Physics Program / Further Options (2)

– Strangeness in Nuclei (Essential input by P.K.)

– CP-Violation in charmed region

Direct CP-Violation (SCS)

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

33 Conclusions

Conclusions

? Enormous impact in particle physics of p-induced reactions ? p-induced reactions have unique features – Nearly all states can be directly produced – High cross sections guarantee high statistics data ? p-beams can be cooled very effectively ? The planned p-experiments at FAIR will contribute to a further understanding of the non-perturbative sector of QCD ? The impact of Paul Kienle to Fair and particularly to the Antiproton Project was enormous as far as physics ideas and technical developments were concerned. Without his constant help and new ideas the project would not have prospered so well.

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

34 Bild Trento

Bild Trento

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

35 Lord of Rings

Lord of Rings

H. Koch, SMI/?AW Symposium Vienna, September 1, 2006

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