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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 - PowerPoint PPT Presentation
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Theoretical particle physics in China and France
QCD, bound states, and the physics beyond the SM
Michael KlasenLPSC Grenoble
January 15, 2008
January 15, 2008 Michael Klasen, LPSC Grenoble 2
Theoretical particle physics in France
Annecy (LAPP/LAPTH): ATLAS, CMS, LHC-BHeavy ions, jets, photons, SUSY (Aurenche, Belanger, Boudjema, Guillet, Mühlleitner, Pilon, Salati)
Clermont-Fd. (LPC): ALICE, ATLAS, LHC-BB mesons (Morenas)
Grenoble (LPSC): ALICE, ATLASDiffraction, jets, photons, heavy quarks, SUSY, GUTs (Carbonell, MK, Kraml, Richard, Schienbein)
Lyon (IPN): ALICE, CMSB mesons, little Higgs, SUSY (Deandrea)
Marseille (CPPM/CPT): ATLAS, LHC-BDiffraction, B mesons (Charles, Knecht, Lellouch, Soffer)
Montpellier (LPTA): -Heavy quarks, SUSY (Hugonie, Kneur, Moultaka, Narison, Renard)
Nantes (SUBATECH): ALICEHeavy ions (Werner)
Paris (LPNHE/LPTHE/LPTENS Jussieu/Veme): ATLASDiffraction, heavy quarks, SUSY (Cacciari, Dokshitzer, Fayet, Nicolescu, Salam)
Paris (IPN/LAL/LLR/LPT/CPhT Orsay/Palaiseau): ALICE, ATLAS, CMS, LHC-BHeavy ions, diffraction, jets, photons, Higgs, SUSY, X-dimensions(Djouadi, Ellwanger, Fontannaz, Korchemsky, Moreau, Munier, Pire, Schiff, Wallon)
Paris (DAPNIA/SPhT Saclay): ALICE, ATLAS, CMSHeavy ions, diffraction, jets, photons, X-dimensions (Gelis, Kosower, Peschanski, Savoy, Servant)
January 15, 2008 Michael Klasen, LPSC Grenoble 3
ESRF
ILLLPSC
CERN /Fréjus
January 15, 2008 Michael Klasen, LPSC Grenoble 4
Theoretical particle physics in France
Annecy (LAPP/LAPTH): ATLAS, CMS, LHC-BHeavy ions, jets, photons, SUSY (Aurenche, Belanger, Boudjema, Guillet, Mühlleitner, Pilon, Salati)
Clermont-Fd. (LPC): ALICE, ATLAS, LHC-BB mesons (Morenas)
Grenoble (LPSC): ALICE, ATLASDiffraction, jets, photons, heavy quarks, SUSY, GUTs (Carbonell, MK, Kraml, Richard, Schienbein)
Lyon (IPN): ALICE, CMSB mesons, little Higgs, SUSY (Deandrea)
Marseille (CPPM/CPT): ATLAS, LHC-BDiffraction, B mesons (Charles, Knecht, Lellouch, Soffer)
Montpellier (LPTA): -Heavy quarks, SUSY (Hugonie, Kneur, Moultaka, Narison, Renard)
Nantes (SUBATECH): ALICEHeavy ions (Werner)
Paris (LPNHE/LPTHE/LPTENS Jussieu/Veme): ATLASDiffraction, heavy quarks, SUSY (Cacciari, Dokshitzer, Fayet, Nicolescu, Salam)
Paris (IPN/LAL/LLR/LPT/CPhT Orsay/Palaiseau): ALICE, ATLAS, CMS, LHC-BHeavy ions, diffraction, jets, photons, Higgs, SUSY, X-dimensions(Djouadi, Ellwanger, Fontannaz, Korchemsky, Moreau, Munier, Pire, Schiff, Wallon)
Paris (DAPNIA/SPhT Saclay): ALICE, ATLAS, CMSHeavy ions, diffraction, jets, photons, X-dimensions (Gelis, Kosower, Peschanski, Savoy, Servant)
January 15, 2008 Michael Klasen, LPSC Grenoble 5
Outline
Exotic hadronsIHEP, ITP, Peking UniversityLPSC Grenoble, LPTA Montpellier
Higgs bosons and supersymmetryTsinghua UniversityLPT Orsay
Precise predictions for BSM at collidersPeking UniversityLPSC Grenoble
Charm at BES-III and CKM-FitterIHEPLAPP Annecy, CPT Marseille, LPT Orsay
Top quarks and Higgs bosonsShandong UniversityLPSC Grenoble
Cosmic rays and dark matterIHEPLAPP Annecy, LPNHE Jussieu
January 15, 2008 Michael Klasen, LPSC Grenoble 6
Charm quarks at BES-III & CKM-Fitter (1)
Experiment:BES-III
Physics interests:Leptonic D(s) decays decay constant @ 1-2 % lattice, B-decaysSemileptonic D decays Vcs, Vcd, Q2-dependence of form factorsThreshold production of D pairs D0-D0 mixing
China:IHEP: H.B. Li, Z.Z. Xing
France:LAPP Annecy: S. T’Jampens, C. KaufholdCPT Marseille: J. CharlesLPT 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
_
January 15, 2008 Michael Klasen, LPSC Grenoble 7
Charm quarks at BES-III & CKM-Fitter (2)
Charm 2007 Workshop:
BES-III expectations:
January 15, 2008 Michael Klasen, LPSC Grenoble 8
Exotic hadrons (1)Theoretical aspects:
Multiflavored [Bc], hidden charm [X(3872)], additional light hadronsSpectroscopy, production rates, and decay propertiesConstituent 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.ZouPeking University: S.L. Zhu, K.T. Chao, C. Liu, B.Q. Ma, H.Q. ZhengCAS: J.P. Ma (ITP), C.F. Qiao (graduate school)
France:LPSC Grenoble: J.M. RichardLPTA Montpellier: S. Narison
Visit by Q. Zhao to LPSC Grenoble (01/08)Proposal for 2008:
2 visits China France, 2 visits France China
January 15, 2008 Michael Klasen, LPSC Grenoble 9
Exotic hadrons (2)Pentaquark: uudds (†)Baryons: cqq (B-factories)
BaBar M=2940, ≈17 MeVPotential models:
3-body dynamics ?Baryons: ccq (Selex 3520 ?)
NRQCDDiquarks (too many states)
Baryons: ccc (“Ultimate goal”)
Mesons: ccg-hybridsBO appr./class. const. gluonsBelle X(3941) a 1-+ candidate
Mesons: MultiquarksPotential models:
c,b:q:Flavour-spin:
QCD sum rules:Duality of 2-point corr. fct.X(3872): ccqq @ 3925±127
Lattice QCD: Z.F. LiuResonance or artefact ?Complex energy scaling
January 15, 2008 Michael Klasen, LPSC Grenoble 10
Top quarks & Higgs bosons (1)Experiment:
ATLASPhysics interests:
Top quark: Identification/reconstruction, single top productionHiggs bosons: h0 W+W-, H±
LHC computing gridChina:
Shandong University: Z. Ren, …, Z.T. Liang, Z.G. SiFrance:
LPSC Grenoble: F. Malek, …, MK
Proposal for 2008:3 visits China France3 visits France China
January 15, 2008 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 quarkNo hadronization spin conserved
Weak decay spin transfer
Analyzing power i = 1 (l,d) / -0.31 (,u) / -0.41 (b)
Double-differential distribution C = fraction of top quarks with identical spin
Choice of basis:Beam axis: Simple, symmetric, frame independentTevatron: off-diagonal, ,LHC: Top helicity (or eigenvector of C)
_ _
_
January 15, 2008 Michael Klasen, LPSC Grenoble 12
Higgs bosons & supersymmetry (1)Theoretical aspects:
New models for EWSB, properties of Higgs/SUSY particlesProduction and decay of Higgs/SUSY particles at LHC/ILCDirect 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 France1 or 2 visits France China
January 15, 2008 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 = RS/SM < 1.2, < 2, < 4, > 4
January 15, 2008 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-constructed 5th
dimension with 3 sites: SU(2)0 x SU(2)1 x U(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 j j
January 15, 2008 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 leptons: NLSP, b- 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]
~
January 15, 2008 Michael Klasen, LPSC Grenoble 16
Precise predictions for BSM at colliders (2)
January 15, 2008 Michael Klasen, LPSC Grenoble 17
Precise predictions for BSM at colliders (3)
Third generation (s)leptons particularly interesting:tan , SUSY parameters, co-annihilation, see-saw mechanism
-identification in ATLAS: [Hinchliffe, NPB PS 123 (2003) 229] [Tarrade]
Requires significant qT
Leptonic decays: qT + direct leptons 100 larger
Hadronic decays: qT + QCD jets 10 larger
Low multiplicity / inv. mass, tuned in Z-decay
-identification in CMS: [Gennai, NPB PS 123 (2003) 244] [Sirois / Qian]
Dedicated calorimeter triggerIsolated tracks, matched to calorimeter jet axisReduces QCD background by factor 1000
Proposal for 2008:Jointly supervised Ph.D. thesis (Y.K. Wang) + 1 visit each way
/
ATLAS TDR
SUSY QCD /
January 15, 2008 Michael Klasen, LPSC Grenoble 18
Precise predictions for BSM at colliders (4)
SM: Only source of flavor violation is CKM matrixMSSM: Super-CKM basis At high energy Vub=Vub …However, different RGEs for quarks and squarksAt low energy, squark mass matrix non-diagonal:
and similarly for Md
Scaling with MSUSY:
Normalization: SU(2)L gauge invariance: LL
uu’ ≈ LLdd’
~ ~
~
January 15, 2008 Michael Klasen, LPSC Grenoble 19
Precise predictions for BSM at colliders (5)
One real parameter:
G. Bozzi et al., NPB 787
(2007) 1:
January 15, 2008 Michael Klasen, LPSC Grenoble 20
Cosmic rays & dark matter (1)Experiments:
HESS, PAMELA, Tibet Array; AMS, ARGO, GLASTTheoretical aspects:
Cosmic rays: Photons, neutrinos, anti-particlesDark matter signal flux: Clumps, asymmetriesBackground: 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. TailletLPNHE Jussieu: D. Maurin
2nd Sino-French workshop on the dark universe (sept. 2006):
Bi, Lavalle, Maurin, Yuan, submitted to A&A, arXiv:0709/3634Proposal for 2008:
3 visits China France, 3 visits France China
January 15, 2008 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) 1177041
0 10 A0 bb, dominates at large tan
Yukawa coupling:QCD loops to O(s
3), top loop @ O(s2), SUSY-QCD loops @ O(s)
Mass singularity:Resummation: mb mb/(1+mb),
~ ~ _
January 15, 2008 Michael Klasen, LPSC Grenoble 22
Talkspp 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