1 / 38

V.A. Khoze ( IPPP, Durham )

Central Diffractive Production of Heavy Quarkonia. (KHRYSTHAL collaboration). . V.A. Khoze ( IPPP, Durham ). (based on works by V. KH oze, M. RY sk in and W.J. ST irling and L. HA rland -L ang ). 1. With a bit of personal flavour. (topical examples ). Tevatron, RHIC and LHC.

tilden
Télécharger la présentation

V.A. Khoze ( IPPP, Durham )

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Central Diffractive Production of Heavy Quarkonia. (KHRYSTHAL collaboration)  V.A. Khoze(IPPP, Durham) (based on works by V.KHoze, M. RYskin and W.J. STirling and L. HArland-Lang) 1

  2. With a bit of personal flavour (topical examples) Tevatron, RHIC and LHC. Forward proton distributions and correlations. CDP@LHC with FSC

  3. New D0 jj- results RHIC, ALICE data expected (star reactions!) Spin-Parity Analyzer (KKMR-2003) Detailed tests of dynamics of soft diffraction(KMR-02)

  4. ,b

  5. Prospects for high accuracy (~1%) mass measurements • (irrespectively of the decay mode). • Quantum number filter/analyser. • ( 0++dominance ;C,P-even) • H ->bb opens up (Hbb- coupl.) • (gg)CED bb inLO ; NLO,NNLO, b- masseffects - controllable. • For some areas of the MSSM param. spaceCEDP may become adiscovery channel! • H→WW*/WW - an added value (less challenging experimentally + small bgds., better PUcond. ) • New leverage –proton momentum correlations (probes of QCD dynamics , CP- violation effects…) CED Higgs production at the LHC H How do we know what we’ve found?  LHC : ‘after discovery stage’,Higgs ID…… mass, spin, couplings to fermions and Gauge Bosons, invisible modes…  for all these purposes the CEDP will be particularly handy !

  6. “soft” scattering can easily destroy the gaps S²absorption effects -necessitated by unitarity (Beatriz) gap M Everybody’s ~ happy (KMR, GLMM, FHSW, KP, S.Ostapchenco. Petrov et al, BH, GGPS, MCs..) gap soft-hard factorizn conserved broken eikonal rescatt: between protons enhanced rescatt: involving intermediate partons Subject of hot discussions recently :S²enh

  7. Standard Candle Processes ‘Better to light a candle than to rant against darkness’ ( Confucius )

  8. FSC@LHC * (more coming soon ) * * Prpospects ! Our 3 measurements are all in good agreement (factor “few”) with the Durham group predictions.

  9. CDF Collaboration, arXiv:0902.1271 [hep-ex], PRL KMRS -2004:130 nb 80 nb (PDG-2008) /KK mode as a spin-parity analyzer Prospects of (b)-spectroscopy , FSC@CMS

  10. P-wave Bottomonia FNAL, E288 (spins- still unconfirmed) (Currently no complete theoretical description of onium properties.) (Still puzzles) (BABAR (2008)) The heaviest and most compact quark-antiquark bound state in nature 10

  11. 11

  12. Charmonium –like XYZ states

  13. still unobserved

  14. (maybe two different states X(3872), X(3875) )

  15. What we expect within the framework of the Perturbative Durham formalism (KMR-01, KKMR-03, KMRS-04, HKRS-10) Example, O++ -case *KNLO Strong sensitivity to the polarization structure of the vertex in the bare amplitude. Absorption is sizeably distorted by the polarization structure (affects the b-space distr.) KMR-01 KMR-02, KKMR-03, HKRS 09-10 (Gap size Forward proton distributions& correlations- possibility to test diffraction dynamics KMR-02

  16. Phys.Rev.Lett.102:242001,2009 Too good to be true ?!

  17. (HKRS-09,10)

  18. (A. Alekseev-1958-positronium) KMR-01 (R.Pasechnik et al, Phys.Lett.B680:62-71,2009; HKRS, Eur.Phys.J.C65:433-448,2010)

  19. 1 : 0.6 : 0.22 2

  20. Spin-parity Analyzer

  21. Central Diffractive Production of (Crystal Bal -1986) 3 % . (about 0.25 of all hadronic decays (CLEO-2009) FSC@LHCb ?  (Barbieri et al (1979), NRQCD ) Suppressed non-resonant background

  22. 1 : 0.03 : 0.08

  23. KKMR-03 Very topical for STAR@RHIC forthcoming measurements with tagged forward protons (new KHRYSTHALresults soon to be released).

  24. KHRYSTHAL-2010

  25. ( Alice is installing counters )

  26. (And the same for Alice)

  27. , KK, , New STAR@RHIC results on CEP with tagged forward protons soon to come. Prospects of CDP studies at ALICE & LHCb (Rainer)

  28. Thank You  

  29. UNCERTAINTIES Known Unknowns N(N)LO- radiative effects (K-factors etc..) ‘…possible inadequancy of PT theory in s …’R.Barbieri et al-1980 ‘ ‘Right’ choice of gluon densities, in particular at so low scales as in the case ( potentiality of a factor of ~3 rise for the H-case ) . Complete model for calculation of enhanced absorption. -experimental widths, decays…     Unknown Unknowns Non- pQCD effects in the meson characteristics. Currently no complete description of heavy quarkonium characteristics. ‘Two gluon width does not tell the whole story.’   Gluons at so low scales, surprises are not excluded at all. Factor of 5 up or down (conservatively) 34

  30. JINST-09

More Related