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Theoretical particle physics in China and France QCD, bound states, and the physics beyond the SM

Theoretical particle physics in China and France QCD, bound states, and the physics beyond the SM. Michael Klasen LPSC Grenoble January 15, 2008. Theoretical particle physics in France. Annecy (LAPP/LAPTH): ATLAS, CMS, LHC-B

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Theoretical particle physics in China and France QCD, bound states, and the physics beyond the SM

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  1. Theoretical particle physics in China and FranceQCD, bound states, and the physics beyond the SM Michael Klasen LPSC Grenoble January 15, 2008

  2. Theoretical particle physics in France • Annecy (LAPP/LAPTH): ATLAS, CMS, LHC-B • Heavy ions, jets, photons, SUSY (Aurenche, Belanger, Boudjema, Guillet, Mühlleitner, Pilon, Salati) • Clermont-Fd. (LPC): ALICE, ATLAS, LHC-B • B mesons (Morenas) • Grenoble (LPSC): ALICE, ATLAS • Diffraction, jets, photons, heavy quarks, SUSY, GUTs (Carbonell, MK, Kraml, Richard, Schienbein) • Lyon (IPN): ALICE, CMS • B mesons, little Higgs, SUSY (Deandrea) • Marseille (CPPM/CPT): ATLAS, LHC-B • Diffraction, B mesons (Charles, Knecht, Lellouch, Soffer) • Montpellier (LPTA): - • Heavy quarks, SUSY (Hugonie, Kneur, Moultaka, Narison, Renard) • Nantes (SUBATECH): ALICE • Heavy ions (Werner) • Paris (LPNHE/LPTHE/LPTENS Jussieu/Veme): ATLAS • Diffraction, heavy quarks, SUSY (Cacciari, Dokshitzer, Fayet, Nicolescu, Salam) • Paris (IPN/LAL/LLR/LPT/CPhT Orsay/Palaiseau): ALICE, ATLAS, CMS, LHC-B • Heavy ions, diffraction, jets, photons, Higgs, SUSY, X-dimensions(Djouadi, Ellwanger, Fontannaz, Korchemsky, Moreau, Munier, Pire, Schiff, Wallon) • Paris (DAPNIA/SPhT Saclay): ALICE, ATLAS, CMS • Heavy ions, diffraction, jets, photons, X-dimensions (Gelis, Kosower, Peschanski, Savoy, Servant) Michael Klasen, LPSC Grenoble

  3. CERN / Fréjus LPSC ILL ESRF Michael Klasen, LPSC Grenoble

  4. Theoretical particle physics in France • Annecy (LAPP/LAPTH): ATLAS, CMS, LHC-B • Heavy ions, jets, photons, SUSY (Aurenche, Belanger, Boudjema, Guillet, Mühlleitner, Pilon, Salati) • Clermont-Fd. (LPC): ALICE, ATLAS, LHC-B • B mesons (Morenas) • Grenoble (LPSC): ALICE, ATLAS • Diffraction, jets, photons, heavy quarks, SUSY, GUTs (Carbonell, MK, Kraml, Richard, Schienbein) • Lyon (IPN): ALICE, CMS • B mesons, little Higgs, SUSY (Deandrea) • Marseille (CPPM/CPT): ATLAS, LHC-B • Diffraction, B mesons (Charles, Knecht, Lellouch, Soffer) • Montpellier (LPTA): - • Heavy quarks, SUSY (Hugonie, Kneur, Moultaka, Narison, Renard) • Nantes (SUBATECH): ALICE • Heavy ions (Werner) • Paris (LPNHE/LPTHE/LPTENS Jussieu/Veme): ATLAS • Diffraction, heavy quarks, SUSY (Cacciari, Dokshitzer, Fayet, Nicolescu, Salam) • Paris (IPN/LAL/LLR/LPT/CPhT Orsay/Palaiseau): ALICE, ATLAS, CMS, LHC-B • Heavy ions, diffraction, jets, photons, Higgs, SUSY, X-dimensions(Djouadi, Ellwanger, Fontannaz, Korchemsky, Moreau, Munier, Pire, Schiff, Wallon) • Paris (DAPNIA/SPhT Saclay): ALICE, ATLAS, CMS • Heavy ions, diffraction, jets, photons, X-dimensions (Gelis, Kosower, Peschanski, Savoy, Servant) Michael Klasen, LPSC Grenoble

  5. Outline • Exotic hadrons • IHEP, ITP, Peking University • LPSC Grenoble, LPTA Montpellier • Higgs bosons and supersymmetry • Tsinghua University • LPT Orsay • Precise predictions for BSM at colliders • Peking University • LPSC Grenoble • Charm at BES-III and CKM-Fitter • IHEP • LAPP Annecy, CPT Marseille, LPT Orsay • Top quarks and Higgs bosons • Shandong University • LPSC Grenoble • Cosmic rays and dark matter • IHEP • LAPP Annecy, LPNHE Jussieu Michael Klasen, LPSC Grenoble

  6. Charm quarks at BES-III & CKM-Fitter (1) • Experiment: • BES-III • Physics interests: • LeptonicD(s) decaysdecayconstant@1-2%lattice,B-decays • Semileptonic D decays  Vcs, Vcd, Q2-dependence of form factors • Threshold production of D pairs  D0-D0 mixing • China: • IHEP: H.B. Li, Z.Z. Xing • France: • LAPP Annecy: S. T’Jampens, C. Kaufhold • CPT Marseille: J. Charles • LPT Orsay: S. Descotes-Genon • Chapter of BES-III physics book (04/07), visit to IHEP (11/07) • Proposal for 2008: • 2 visits China  France, 4 visits France  China _ Michael Klasen, LPSC Grenoble

  7. Charm 2007 Workshop: BES-III expectations: Charm quarks at BES-III & CKM-Fitter (2) Michael Klasen, LPSC Grenoble

  8. Exotic hadrons (1) • Theoretical aspects: • Multiflavored [Bc], hidden charm [X(3872)], additional light hadrons • Spectroscopy, production rates, and decay properties • Constituent quark models, QCD sum rules, and effective theories • Experiments: • BaBar, Belle, BES-III, CLEOc, COMPASS, FAIR, J-PARC, and LHC • China: • IHEP:Q.Zhao,Y.Chen,Y.B.Dong,Y.Jia,P.N.Shen,J.X.Wang,B.S.Zou • Peking University: S.L. Zhu, K.T. Chao, C. Liu, B.Q. Ma, H.Q. Zheng • CAS: J.P. Ma (ITP), C.F. Qiao (graduate school) • France: • LPSC Grenoble: J.M. Richard • LPTA Montpellier: S. Narison • Visit by Q. Zhao to LPSC Grenoble (01/08) • Proposal for 2008: • 2 visits China  France, 2 visits France  China Michael Klasen, LPSC Grenoble

  9. Pentaquark: uudds (†) Baryons: cqq (B-factories) BaBar M=2940, G≈17 MeV Potential models: 3-body dynamics ? Baryons: ccq (Selex 3520 ?) NRQCD Diquarks (too many states) Baryons: ccc (“Ultimate goal”) Mesons: ccg-hybrids BO appr./class. const. gluons Belle X(3941) a 1-+ candidate Mesons: Multiquarks Potential models: c,b: q: Flavour-spin: QCD sum rules: Duality of 2-point corr. fct. X(3872): ccqq @ 3925±127 Lattice QCD: Z.F. Liu Resonance or artefact ? Complex energy scaling Exotic hadrons (2) Michael Klasen, LPSC Grenoble

  10. Top quarks & Higgs bosons (1) • Experiment: • ATLAS • Physics interests: • Top quark: Identification/reconstruction, single top production • Higgs bosons: h0 W+W-, H± • LHC computing grid • China: • Shandong University: Z. Ren, …, Z.T. Liang, Z.G. Si • France: • LPSCGrenoble: F. Malek, …, MK • Proposal for 2008: • 3 visits China  France • 3 visits France  China Michael Klasen, LPSC Grenoble

  11. Top quarks & Higgs bosons (2) • Production of top quarks: non-polarized, but spins correlated • Tevatron (qLqR tt) : 81% opposite spins • LHC (gg  tt) : 67% identical helicities • Decay ( single production): rest frame of top quark • No hadronization spin conserved • Weak decay spin transfer  • Analyzing power ai = 1 (l,d) / -0.31 (n,u) / -0.41 (b) • Double-differential distribution  • C = fraction of top quarks with identical spin • Choice of basis: • Beam axis: Simple, symmetric, frame independent • Tevatron: off-diagonal, , • LHC: Top helicity (or eigenvector of C) _ _ _ Michael Klasen, LPSC Grenoble

  12. Higgs bosons & supersymmetry (1) • Theoretical aspects: • New models for EWSB, properties of Higgs/SUSY particles • Production and decay of Higgs/SUSY particles at LHC/ILC • Direct and indirect detection of SUSY dark matter • Experiments: • ATLAS, CMS, but also low-energy/astrophysics constraints • China: • Tsinghua University: H.J. He • France: • LPT Orsay: A. Djouadi • Proposal for 2008: • 1 or 2 visits China  France • 1 or 2 visits France  China Michael Klasen, LPSC Grenoble

  13. Higgs bosons & supersymmetry (2) • Higgs production and decay in warped extra dimensions: • A. Djouadi, G. Moreau, arXiv:0707.3800 [hep-ph] • SU(2)L x SU(2)R x U(1) with additional heavy b-quark • Contributes to production and decay • R = sRS/sSM < 1.2, < 2, < 4, > 4 Michael Klasen, LPSC Grenoble

  14. Higgs bosons & supersymmetry (3) • New gauge boson production in Higgs-less models: • H.J. He, Y.P. Kuang et al., arXiv:0708.2588 [hep-ph] • De-constructed5thdimensionwith3sites:SU(2)0 xSU(2)1 xU(1)2 • Spontaneous symmetry breaking W1/Z1 bosons with MW1/Z1 400 GeV • Delays unitarity violation to higher scales •  choose MW1 (= 500 GeV) and f1/f2 (= 1) • pp  W0 Z0 Z0 pp  W0 Z0 jj Michael Klasen, LPSC Grenoble

  15. Precise predictions for BSM at colliders (1) • Theoretical aspects: • Higgs, supersymmetry, extra neutral gauge bosons, … • Perturbative QCD, resummation, Monte Carlo simulation • t leptons: t NLSP, b-t unification, non-universality, FCNC • Experiments: • ATLAS, CMS, but also low-energy/astrophysics constraints • China: • Peking University: C.S. Li, S.H. Zhu, Q. Li, Y.K. Wang • France: • LPSC Grenoble: MK, K. Kovarik, B. Fuks, J. Debove • Two-month visit of Q. Li to LPSC (march-april 2007): • B. Fuks, M. Klasen, F. Ledroit, Q. Li, J. MorelPrecision predictions for Z’-production at the CERN LHC:Matrix elements, parton showers, and joint resummationSubmitted to Nucl. Phys. B, arXiv:0711/0749[hep-ph] ~ Michael Klasen, LPSC Grenoble

  16. Precise predictions for BSM at colliders (2) Michael Klasen, LPSC Grenoble

  17. Precise predictions for BSM at colliders (3) • Third generation (s)leptons particularly interesting: • tan b,SUSYparameters,co-annihilation,see-sawmechanism • t-identification in ATLAS: [Hinchliffe, NPB PS 123 (2003) 229] [Tarrade] • Requires significant qT • Leptonicdecays: qT +directleptons100larger • Hadronic decays: qT +QCD jets10larger • Low multiplicity/inv. mass, tuned in Z-decay • t-identification in CMS: [Gennai, NPB PS 123 (2003) 244] [Sirois / Qian] • Dedicated calorimeter trigger • Isolated tracks, matched to calorimeter jet axis • Reduces QCD background by factor 1000 • Proposal for 2008: • Jointly supervised Ph.D. thesis (Y.K. Wang) + 1 visit each way ATLAS TDR SUSYtt QCD / / Michael Klasen, LPSC Grenoble

  18. Precise predictions for BSM at colliders (4) • SM: Only source of flavor violation is CKM matrix • MSSM: Super-CKM basis  At high energy Vub=Vub … • However, different RGEs for quarks and squarks • At low energy, squark mass matrix non-diagonal: and similarly for Md • Scaling with MSUSY: • Normalization: • SU(2)L gauge invariance: DLLuu’ ≈ DLLdd’ ~ ~ ~ Michael Klasen, LPSC Grenoble

  19. Precise predictions for BSM at colliders (5) One real parameter: G.Bozzietal.,NPB787(2007)1: Michael Klasen, LPSC Grenoble

  20. Cosmic rays & dark matter (1) • Experiments: • HESS, PAMELA, Tibet Array; AMS, ARGO, GLAST • Theoretical aspects: • Cosmic rays: Photons, neutrinos, anti-particles • Dark matter signal flux: Clumps, asymmetries • Background: Photons from anti-nuclei, anisotropies, transport • China: • IHEP: X.J. Bi, C. Fan, H.B. Hu, Q. Yuan, J. Zhang, Y. Zhang • France: • LAPTH Annecy: P. Salati, J. Lavalle (Torino), R. Taillet • LPNHE Jussieu: D. Maurin • 2nd Sino-French workshop on the dark universe (sept. 2006): • Bi, Lavalle, Maurin, Yuan, submitted to A&A, arXiv:0709/3634 • Proposal for 2008: • 3 visits China  France, 3 visits France  China Michael Klasen, LPSC Grenoble

  21. Cosmic rays & dark matter (2) • SUSY-QCD corrections to DM annihilation in the Higgs funnel • B. Herrmann, MK, PRD 76 (2007) 117704 • C10 C10 A0 bb, dominates at large tan b • Yukawa coupling: • QCD loops to O(as3), top loop @ O(as2), SUSY-QCD loops @ O(as) • Mass singularity: • Resummation: mb mb/(1+Dmb), _ ~ ~ Michael Klasen, LPSC Grenoble

  22. Talks pp colliders (Tevatron, LHC): • Chong-Sheng LI (Peking):Single top-quark production via SUSY FCNC couplings and model-independent FCNC couplings at hadron colliders • Shou-hua ZHU (Peking):Guiding stars for physics beyond the Standard Model:Higgs boson and dark matter • Qiang LI (Karlsruhe):Precision predictions for Z’-production at the LHC:QCD matrix elements, parton showers, and joint resummation e+e- colliders (BEP, ILC): • Zhao-feng LIU (Paris-Sud):Moments of pion PDFs and baryon masses from twisted mass lattice QCD • Qiang ZHAO (IHEP):Intermediate meson loop contributions to charmonium radiative decays Michael Klasen, LPSC Grenoble

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