1. Exotic and non-Exotic Charmonium Spectroscopy with PANDA @ FAIR Klaus Peters on behalf of the PANDA Collaboration GSI and U Frankfurt TU Munich, Oct 11, 2012

2. criteria of stability can be derived from extreme (exotic) structures  properties of the binding sub nuclear material research…. Klaus Peters - Charmonium Spectrscopy at PANDA

3. J PC L=0L=1 0 -+ 1 -- 1 +- 0 ++ 1 ++ 2 ++ ψ(4415) ψ(4040) ψ(2S) J/ψ hchc χ c0 χ c1 χ c2 (2P) χ c2 ηcηc η c (2S) P,D,F,... States high angular momentum S-States η c (nS) ψ(nS) radial excitations Charmonium G. Bali et al., hep-lat/0003012 Distance (fm) Klaus Peters - Charmonium Spectrscopy at PANDA

4. J PC L=0L=1 0 -+ 1 -- 1 +- 0 ++ 1 ++ 2 ++ ψ(4415) ψ(4040) ψ(2S) J/ψ hchc χ c0 χ c1 χ c2 (2P) χ c2 ηcηc η c (2S) K.J. Juge, J. Kuti, C. Morningstar hep/lat 9709131 Charmonium – different degrees of freedom ? Distance (fm) Klaus Peters - Charmonium Spectrscopy at PANDA different potential

5. J PC L=0L=1 0 -+ 1 -- 1 +- 0 ++ 1 ++ 2 ++ ψ(4415) ψ(4040) ψ(2S) J/ψ hchc χ c0 χ c1 χ c2 (2P) χ c2 ηcηc η c (2S) K.J. Juge, J. Kuti, C. Morningstar hep/lat 9709131 Charmonium – Hybrid potentials Distance (fm) Klaus Peters - Charmonium Spectrscopy at PANDA different potential

6. Discovery of the X(3872) hep-ex/0406022 9.4σ 11.6 σ BABAR Phys. Rev. Lett. 91(2003)262001 152 Mill. BB Klaus Peters - Charmonium Spectrscopy at PANDA 2003

7. X(3872) – More complicated components ? D 0 D *0 cusppeak D + D *- D 0 D *0 Scan with simultaneous extraction of J/ψππ, D 0 D *0, D + D *-, ψ(2S)γ, J/ψγ, J/ψρ and J/ψω essential ! virtual state binding state J/ψππ needs a line shape measurement Klaus Peters - Charmonium Spectrscopy at PANDA

8. Glueballs in lattice QCD Klaus Peters - Charmonium Spectrscopy at PANDA Quenched Approximation no quark-pair creation typical lattice problems creates bare states Prediction: M(J PC =0 ++ )~1.5-1.7 GeV/c 2 M(J PC =0 ++ )~2.2-2.4 GeV/c 2 Morningstar und Peardon, PRD60 (1999) 034509 Morningstar und Peardon, PRD56 (1997) 4043

9. f 0 (1500) High production yield  f 0 (1500)π ~25 % in 3π 0 and in 2ηπ 0 Several scalar resonances in the same regime  indicate overpopulation  and also suggest strong mixing  glueball confirmation in the scalar sector still pending Klaus Peters - Charmonium Spectrscopy at PANDA

10. Fock-Expansion Mixing is present all over the place non- q states expected to contribute to the meson wave function exotics can (and will) mix with conventional q states with identical quantum numbers M HM M G Klaus Peters - Charmonium Spectrscopy at PANDA

11. Fock-Expansion – solution to the problem remove the leading term due to selection of quantum numbers e.g. for hybrids Klaus Peters - Charmonium Spectrscopy at PANDA

12. Fock-Expansion – solution to the problem remove the leading term due to selection of quantum numbers e.g. for hybrids Klaus Peters - Charmonium Spectrscopy at PANDA S1S1 S2S2 S=S 1 +S 2 J=L+S P=(-1) L+1 C=(-1) L+S L GluonMagneticElectric 1 S 0, 0 –+ 1 ++ 1 –– 3 S 1, 1 –– 0 +- 0 –+ 1 +- 1 –+ 2 +- 2 –+ impossible for qq J PC exotic

13. π 1 (1600)…E852 ρπ in 1997 and COMPASS today π - p π - ρ 0 p π - π - π + p Klaus Peters - Charmonium Spectrscopy at PANDA

14. π 1 (1600)…E852 ρπ in 1997 and COMPASS today π - p π - ρ 0 p π - π - π + p Klaus Peters - Charmonium Spectrscopy at PANDA thanks to G. Adams, RPI

15. New Charmonium-like Discoveries X(3872) PRL 91,262001 (2003) X(3940) PRL 98,082001 (2007) Y(3940) PRL 94,182002 (2005) X(3915) PRL 104,092001 (2010) Y(4260) PRL 95,142001 (2005) Y(4350) PRL 98,212001 (2007) Y(4008) PRL 99,182004 (2007) Y(4660) PRL 99,142002 (2007) Z(4430) - PRL 100,142001 (2008) Z 1 - & Z 2 - PRD 78,072004 (2008) Y(4140) PRL 102,242002 (2009) X(4350) PRL 104,112004 (2010) Klaus Peters - Charmonium Spectrscopy at PANDA in addition to many more open charm states

16. Hybrid Candidates with J PC = 1 -- e + e -  J/ψ ππ  ISR mass4259±8MeV/c 2 width88±23MeV/c 2 charmonium hybrid ? ππ S-Wave L=0 S-Wave hybrid properties + Y(4260) Klaus Peters - Charmonium Spectrscopy at PANDA

17. Hybrid Candidates with J PC = 1 -- e + e -  J/ψ ππ  ISR mass4259±8MeV/c 2 width88±23MeV/c 2 charmonium hybrid ? Significance ~ 5.8σ PRD 74 (2006) 091103 Significance ~ 8σ PRL 95, 142001 (2005) e + e -  ф ππ  ISR mass2175±10MeV/c 2 width58±16MeV/c 2 strangeonium hybrid ? S-Wave Y(4260) Y(2175) Klaus Peters - Charmonium Spectrscopy at PANDA

18. ….and FAIR PANDA HESR Klaus Peters - Charmonium Spectrscopy at PANDA

19. HESR – Storage Ring for Antiprotons Parameters of HESR Injection of p at 3.7 GeV Slow synchrotron (1.5-14.5 GeV/c) Storage ring for internal target operation Luminosity up to L~ 2x10 32 cm -2 s -1 Beam cooling (stochastic & electron) E CM Resonance scan Energy resolution ~50 keV Tune E CM to probe resonance Get precise mass and width

20. Klaus Peters - Charmonium Spectrscopy at PANDA pp cross sections PANDA Crystal BarrelE760/E835 Obelix PS185 Jetset http://pdg.lbl.gov/2007/hadronic-xsections/hadronicrpp_page11.pdf CITATION: W.-M. Yao et al., J. Phys. G 33,1 (2006)

21. Klaus Peters - Charmonium Spectrscopy at PANDA pp cross sections – exclusive final states 100 mb 10 mb 1 mb 100 μ b 10 μ b 1 μ b 100 nb 10 nb 1 nb ηcηc χ c0 χ c2 ηcπ0ηcπ0 Hybrids Glueballs X (3872) Example X (3872) peak ~50 nb (E. Braaten) DDπ/ψππ ~10:1  ψππ 250 pb (ee and μμ)  DDπ 500 pb (multiple channels) includes eff. and BR L=2·10 31, duty ε=0.5 ∫ (L*ε) = 0.86 pb -1 /d  2 d/point  peak (~400 ev. ψππ/~800 ev. DDπ) x 20 points  40 days Klaus Peters - Exotic Hadrons @ PANDA

22. PANDA Detector Klaus Peters - Charmonium Spectrscopy at PANDA

23. X(3872) - Simulation of an Energy Scan Extraction of the Width after beam profile deconvolution Г = 136 keVГ = 100 keV 16 Scan-Points ΔE = 100 keV 2-3 days per Scan-Point

24. Klaus Peters - Charmonium Spectrscopy at PANDA Mass and Width Determination D sJ (*) (2xxx) Deduce mass and width from excitation function Many channels, but all require e-cooling at large energies threshold D s0 *D s0 *threshold D s D s0 * possible experimental result

25. Klaus Peters - Charmonium Spectrscopy at PANDA Benchmark pp  (χ c1 ππ)η and (DD * +c.c. )η (χ c1 ππ)η  not yet final (DD * +c.c. )η  1 nb production cross section  decay branchings already accounted for 100% 30% 13% Efficiency 8% Efficiency 5%

26. Klaus Peters - Charmonium Spectrscopy at PANDA Benchmark pp  Y(4260)  ψππ J/ψ J/ψππ J/ψπ 0 π 0

27. Klaus Peters - Charmonium Spectrscopy at PANDA Benchmark pp  фф Input  M=2.235 GeV/c 2  Г=15 MeV/c 2

28. strong and international collaboration > 400 scientists almost 60 Institutions http://www.gsi.de/panda Klaus Peters - Charmonium Spectrscopy at PANDA

29. Conclusion and Outlook Klaus Peters - Charmonium Spectrscopy at PANDA Hadron Physics at FAIR with PANDA  addresses key questions  high Statistics  high Precision  high Discovery potential R&D for PANDA well under way  edge technology  radiation hardness  speed – detectors and readout For a timely construction after the official start 2018

30. Klaus Peters - Charmonium Spectrscopy at PANDA THANK YOU

31. Klaus Peters - Charmonium Spectrscopy at PANDA PANDA Physics Programme 02468121510 p Momentum [GeV/c] s ½ =m [GeV/c 2 ] 12345 DD (*), D s D s (*) qqccqqccqq nng,ssgccgccg ggg,gg Y elm. FF Spin cYcYcYcYc light qqHyp pApA