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Hadron Physics at

Fakultät Mat/Nat Fachrichtung Physik Institut für Kern- und Teilchenphysik. Introduction to FAIR Physics at FAIR QCD at FAIR: Heavy Ion Beams: CBM Experiments with Antiprotons: P ANDA. Hadron Physics at. Kai-Thomas Brinkmann, Bonn, Sep 9, 2007. Extension of the GSI facility

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Hadron Physics at

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  1. Fakultät Mat/Nat Fachrichtung Physik Institut für Kern- und Teilchenphysik • Introduction to FAIR • Physics at FAIR • QCD at FAIR: • Heavy Ion Beams: CBM • Experiments with Antiprotons: PANDA Hadron Physics at Kai-Thomas Brinkmann, Bonn, Sep 9, 2007

  2. Extension of the GSI facility • with respect to: • highest intensities • highest brilliance • highest beam power • higher beam energies • parallel operation for several experiments in different fields with different beams • production of secondary beams of highest quality KTB, Sep 09, 2007

  3. http://www.gsi.de/fair/ KTB, Sep 09, 2007

  4. Physicsat FAIR • APPA: Atomic, Plasma and Applied Physics • Nuclear Structure • and Astrophysics • QCD Physics • Heavy Ions: Compressed Baryonic Matter CBM • High-energy p: PANDA • PAX / ASSIA (Polarized pp) • Low-energy p: FLAIR KTB, Sep 09, 2007

  5. Acceleration & storage http://www.gsi.de/fair/index.html • 1012 s-11.5 A∙GeV238U28+ • 3∙1013s-130 GeVprotons (75 MeV Linac) • 1010 s-1238U73+upto 35 A∙GeV Heavy-ion experiments KTB, Sep 09, 2007

  6. HI Physicsat FAIR: CBM U+U collisionat 23 A∙GeV (UrQMDsimulation) KTB, Sep 09, 2007

  7. HI Physicsat FAIR: KTB, Sep 09, 2007

  8. Silicon Detector System 1 T field MVD (Micro Vertex Detector) + STS (Silicon Tracking System) KTB, Sep 09, 2007

  9. Reconstructionof D Mesons D+ → p+p+K-(ct = 317 mm) D0 → K-p+(ct = 124 mm) KTB, Sep 09, 2007

  10. collection & preparation production (30 GeV p on Cu) acceleration & preparation experiments http://www.gsi.de/fair/index.html Antiprotons 2∙1011 stored and cooled antiprotons, 1 - 15 GeV/c KTB, Sep 09, 2007

  11. Antiproton Storage Ring HESR 1011 stored antiprotons, momentum range 1.5 to 15 GeV/c Luminosity at peak intensity: L= 2·1032 cm-2s-1δp/p = 10-4 (stochastic cooling) interaction rate 2·107 s-1 Luminosity for highest resolution: L= 2·1031 cm-2s-1p/p = 4∙10-5 (electron cooling) KTB, Sep 09, 2007 11

  12. The PANDA Physics • Many open questions in strong (non-perturbative) QCD • - charmonium - hybrids, glueballs and exotics - open charm • Chiral symmetry in SU(3) and SU(4) • - hadrons in the nuclear medium • Hypernuclei: “3rd dimension“ of the chart of nuclides • rare decays, baryon spectroscopy, CP violation in the charm sector, electromagnetic channels and processes (e-m formfactor of the proton in the time-like regime, virtual Compton scattering, generalized parton distributions, Drell-Yan), antiproton physics at low energies KTB, Sep 09, 2007

  13. The PANDA energyrange KTB, Sep 09, 2007 13

  14. The PANDA Detector PANDA Technical Status Report, http://http://www-panda.gsi.de/ • PANDA is a modular multi-purposedevice: • Excellentforwardacceptanceandresolution • (Moderate) backwardacceptance • Wide dynamicrange: particle momenta 0.1 - 8 GeV/c • Momentummeasurements in magneticfields (Dp/p  1%) • Particle ID in widemomentumrangee,m, p, K, p, … • Electromagneticcalorimeter: g, p0, h ... (e) • High-resolutionvertexdetection: D, D0 / Ks, Λ, Σ, Ω ... • High interaction rate upto2·107s-1 • Intelligent trigger design for parallel dataacquisitionat • highratesandsmallbranchingfractions KTB, Sep 09, 2007

  15. EM/hadron calorimeter TOF system EM calorimeter Dipole DIRC Cherenkov RICH Solenoid driftchambers µ counters p central tracker MVD IP KTB, Sep 09, 2007

  16. satisfactory resolution often only achieved in formation mass resolution at PANDA ΔM < 20 keV CharmoniumSpectroscopy KTB, Sep 09, 2007

  17. CharmoniumSpectroscopy Masses, widths and decay properties: Charmonium states narrow below the DD threshold, but only a few widths and decay widths measured (X-states!) Discovery of the ´c(21S0) by Belle [PRL 89(2002)102001] (+BaBar, CLEO) M(c) = (3654  6  8) MeV/c2 Charmonium states broad(er) above the DD threshold, but not many known, properties scarcely known and rarely measured KTB, Sep 09, 2007

  18. Belle, PRL 91 (2003) 262001 CharmoniumSpectroscopy Discovery of new narrow state above the DD threshold X(3872) at Belle (+ CDF, D0, BaBar) M = (3871.9  0.5) MeV/c2  2.3 MeV (90 % C.L.) [PRL 91(2003)262001] • Nature of this state • charmonium 13D2 or 13D3 ? • D0D0* molecule ? • charmonium hybrid ? ... and heavier ones X(3940) etc. ... (alphabet states) KTB, Sep 09, 2007

  19. HybridsandGlueballs Quarks in mesons are well-localized objects connected by gluons which can be excited (qqg, gg states) Expectation: Hybrid states better separated from fewer states in charm region than in (u,d,s) Bali et al., NP Proc.Suppl. 63(97)209 KTB, Sep 09, 2007

  20. 0+- 2+- Morningstar,Peardon, PRD60(1999)34509 Morningstar,Peardon, PRD56(1997)4043 HybridsandGlueballs • Bag model • Constituent gluon model • Flux tube model • LQCD calculations • all suggest • Mccg ~ 4.2-4.5 GeV • 3 hybrids with JPC = 0+-,1-+,2+- • No mixing with cc • No decay to DD or DD* • σccg ~ 100-150 pb • comparable to cc KTB, Sep 09, 2007

  21. SPS g,p-,p - beams RHIC LHC SIS 18 SIS 200 T [MeV] 300 Mesons in Nuclear Matter Chiral restoration in the strange sector Predictions for charmed mesons Mesons in cold baryonic matter: production with p KTB, Sep 09, 2007

  22. t ~ 10…20 fm/c final state = e+e- / m+m-/gg/ J/yg  _  p  t 10 fm/c (collisional broadening) ~ 1 fm Mesons in Nuclear Matter: cc S.H. Lee, nucl-th/0310080 KTB, Sep 09, 2007

  23. ElectromagneticFormfactor pp↔e+e-: Proton electromagnetic formfactor in the time-like region • mostly e+e-, small samples • (better in recent radiative return measurements) • based on total cross sections (GE = GM) • PANDA: • high luminosity • excellent particle ID • angular resolution • large energy range KTB, May 15, 2007

  24. pp → e+e- at PANDA design luminosity of 2∙1032 cm-2 s-1 KTB, May 15, 2007

  25. Further Interest in EM Processes • pp → γγ parton distribution amplitudes • Drell-Yan process • Polarized beam or target: access to a new class of structure functions: transversity KTB, May 15, 2007

  26. Baryon Spectroscopy • HESR: s = 5.5 GeV |S| = 3 and |C| = 1 baryons • pp → B* B / B B*(cf. LEAR, PS185) • pp → B* m p / p m B* (cf. pp at COSY) A. Sibirtsev, PANDA meeting, Dubna 2007 KTB, Sep 09, 2007

  27. N*: 10 **** L*: 8 **** D : 7 **** S*: 5 **** X*: 1 **** W*: 0 **** Predictions: Relativistic Quark Model U. Löring, B.Ch. Metsch, H.R. Petry, Eur. Phys. J A 10 (2001) 447 KTB, Sep 09, 2007

  28. pp ¸W* + c.c. Ω*  ΞK, Ωππ, ΛK-K0, … p+ p- p- p- L K0 X- p ¸+ « p+ K+ Example PredictedX, W crosssections A.B. Kaidalov,E.P.Volkovitsky, ZPC 63 (94) 514 spp XX~ 1µb sgp KKX= 3.5nb p p Ω-*  XΞ- K0 + c.c. KTB, Sep 09, 2007

  29. Simulation: Hyperon Detection Detectors involved: MVD high-quality vertex reconstruction KTB, Sep 09, 2007

  30. Simulation: Hyperon Detection Detectors involved: Central tracking andforwardtrackingwithsilicon, wirechambersand GEMs KTB, Sep 09, 2007

  31. Simulation: 8.0 GeV/c pp W+X-K0+ c.c. 25% efficiency without any particular optimization KTB, Sep 09, 2007

  32. 10 9 proton number 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 neutron number Hypernuclei • Study of hypernuclei can teach about interactions: • hyperon-nucleon • hyperon-hyperon • baryon-nucleus PANDA: access to double hypernuclei KTB, Sep 09, 2007

  33. kaons _ 1. hyperon- antihyperon production at threshold trigger X _ p X-capture: X-p  LL +28 MeV 3 GeV/c X- 2. capture of X- in secondary target nucleus g L g L +23MeV 3. g-spectroscopy with Ge-detectors  up to 500 g-events per day ! Hypernuclei KTB, Sep 09, 2007 33 KTB, May 15, 2007

  34. Summary • FAIR will become a leading facility in nuclear and strong interaction physics. • CBM and PANDA will provide new insights into the physics of strong QCD. • PANDA will produce copious amounts of hadrons, mesons as well as baryons, often strange and sometimes charming. KTB, Sep 09, 2007

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