Photon Linear Linear Collider Collider - - Photon or the the - PowerPoint PPT Presentation

Photon Linear Linear Collider Collider - - Photon or the the fusion fusion of of light light or Florence, , September September 2007 2007 Florence General overview overview General LHC- -ILC ILC- -PLC PLC synergy synergy LHC Outlook Maria Maria Krawczyk Krawczyk Outlook University of of Warsaw Warsaw University

LCWS 2007 – – DESY, 30.05 DESY, 30.05- -4.06 4.06 LCWS 2007 PLC2000 PLC2000 PLC2001 PLC2001 PLC2005 PLC2005 LCWS2007– –DESY DESY LCWS2007 PHOTON2007- PHOTON2007 -Paris Paris

Backward Compton Compton Scattering Scattering- - Backward basic idea idea of of the the photon photon collider collider basic Ginzburg, , Telnov Telnov ’85 ’85 Ginzburg � PLC PLC - - γ γ γ γ and and e e γ γ options options �

The Photon Photon Collider Collider – – main main characteristics characteristics The � Variable Variable energy energy and and degree degree of of polarization polarization of of the the photon photon beams beams – – � both circular circular and and linear linear – – however however ( (almost almost) ) monochromatic monochromatic both spectrum possible possible (a (a high high energy energy peak peak) ) spectrum � Clean Clean or or dirty dirty collider collider? ? Hadronic Hadronic interaction interaction of of photon photon …… …… � PLC at at ILC ILC PLC � For ILC For ILC with with energy energy 500 500- -1000 1000 GeV GeV: : � � Characteristic Characteristic energy energy up to 0.8 to 0.8 E_ee E_ee (0.9 for ) (0.9 for ) up � � Luminosity Luminosity 0.2 0.2 L_ee L_ee � Annual luminosity luminosity 100 fb_1 (30 fb 100 fb_1 (30 fb- -1 1 in in the the peak peak) ) Annual � Mean Mean energy energy spread spread in in a a peak peak: 0.05 : 0.05- -0.07 0.07 � � Mean Mean helicity helicity at at the the peak peak: 0.9 : 0.9- -0.95 0.95 � � Important Important parameter parameter x: x: energy energy of of e e � x=4.5 to avoid avoid pair pair production production x=4.5 to

Spectra – – dependence dependence on on Spectra polarization of of e e P P e and laser P laser P L polarization e and L 2 λ γ Ideal spectrum spectrum = = the the lowest lowest order QED order QED Ideal Non- -linear linear QED QED processes processes - -> > realistic realistic spectrum spectrum for a for a Non single photon photon beam beam and and for a for a γ γ γ γ or or e e γ γ system system single

Realistic γ γ γ γ spectra spectra - - Realistic � � For J J z = 0, 2 For z = 0, 2 � � Here peak peak for for Here � � M=120 GeV GeV M=120 � � CompAZ CompAZ parametrizaton parametrizaton (A.F. Ż arnecki A.F. Ż arnecki) ) (

Circular and and linear linear photon photon polarization polarization at at PLC PLC Circular e unpolarized unpolarized, , e P L =1 P L =1 Higgs production production Higgs Higgs production production Higgs σ( (γ γ γ γ - ->h) >h) ∼ ∼ 1+ 1+ λ λ 1 λ 2 J z =0 σ 1 λ J z =0 2 σ ( ( γ γ γ γ - ->h) >h) ∼ ∼ 1 1 ± ± l l 1 l 2 σ 1 l 2 Main background background Main σ ( γ γ -> b b) ∼ 1- λ 1 λ 2 J z =2 CP even even and and CP CP odd odd CP

PLC: Photon Photon Linear Linear Collider Collider PLC: γ γ γ and and e e γ γ γ � Resonance Resonance production production of of C=+ C=+ states states (eg. (eg. Higgs Higgs) ) Ginzburg Ginzburg et et al al � � Higher Higher mass mass reach reach Spira Spira, , Zerwas Zerwas � � Polarised Polarised beams beams – – CP CP filter filter Gunion, , Grzadkowski Grzadkowski, , Godbole Godbole, , Zarnecki Zarnecki Gunion � � H H γ γ γ γ coupling coupling – – sensitive sensitive to to charged charged particles particles in in theory theory � (nondecoupling nondecoupling) ) Ginzburg ( Ginzburg et al.., et al.., Gunion Gunion.. .. � Direct Direct production production of of charged charged scalars scalars, , fermions fermions and and vectors vectors – – � higher cross cross section section higher Monig, , Belanger Belanger � Pair Pair production production of of neutral neutral particles particles (eg. (eg. light light- -on on- -light light) via ) via loops loops � Jikia, , Gounaris Gounaris Jikia � Study Study of of hadronic hadronic interaction interaction of of the the photon photon Godbole,Pancheri; MK ; MK Godbole,Pancheri � Brodsky, , deRoeck,Zerwa deRoeck,Zerwa Brodsky

, γ γ γ γ , e , e γ γ , WW or or W W ν ν WW γ γ γ γ e γ γ e e+e- e+e - Belanger et Belanger et al al

SUSY particle particle production production SUSY - in in e e γ γ higher higher mass mass reach reach -

Hadronic cross cross section section Hadronic Godbole,Pancheri,deRoeck Godbole,Pancheri,deRoeck • Large • Large γ γ γ γ → → hadrons hadrons cross section section cross • Various • Various study study of of QCD QCD possible possible nb nb • Measurements • Measurements of of the the hadronic ( (partonic partonic) ) hadronic structure of of the the photon photon structure • In e In e γ γ option option DIS on a DIS on a • real photon photon for for the the first first real time possible time possible • The The structure structure of of • polarized photon photon polarized

Precise Higgs Physics Higgs Physics at at Precise ILC/PLC ILC/PLC � Precise measurements of Higgs Precise measurements of Higgs � production cross section and branching production cross section and branching fractions. fractions. � Higgs self coupling measurements Higgs self coupling measurements � � Heavy Higgs searches in MSSM. Heavy Higgs searches in MSSM. � � CP of the Higgs boson. CP of the Higgs boson. �

Br and and relative relative precision precision at at ILC ILC Br e + e - e + e - Br for 120 GeV Br for 120 GeV, 500 fb , 500 fb- -1 1

Proof of the mass generation mechanism of elementary particles e + e - GLC project

Self couplings couplings in in γ γ γ γ → → hh hh Self Belusevic, , Jikia Jikia ‘ ‘2004 2004 Belusevic box, triangle , triangle with with W,top W,top and and h* h*- ->hh >hh box Cross section section for for mass mass 115 115- -150 150 GeV GeV for J for J z =0, 2 Cross z =0, 2 For mass mass = 120 = 120 GeV GeV, , anomalous anomalous contr contr. | . | δ δ |=0,1,0.3 |=0,1,0.3 For

σ for for hhh hhh coupling coupling vs vs SM SM σ γ γ γ γ e + e - + e - e δ= = - -1 1 cancels cancels the the SM SM hhh hhh contr contr. . δ

SM Higgs Higgs decaying decaying in in b b   b b SM

Higgs coupling coupling to to Higgs Niezurawski et al., et al., Niezurawski Monig, Monig , Rosca Rosca

A. Rosca Rosca, K. , K. Moening Moening: : hep hep- -ph ph/0705.1259 /0705.1259 A. SM Higgs Higgs 120 120 GeV GeV at at PLC PLC SM � Without Without and and with with � overlying events events overlying 2.1 % 2.1 % Knowing it it and and using using Br Br Knowing from e from e + + e e - - -> > - Γ( ( h h- -> > γ γ γ γ ) ) ∼ ∼ 3 % 3 % Γ

SM- -like like h ( h (or or H) H) in in 2HDM 2HDM SM all couplings couplings to to fermions fermions and and all gauge bososns bososns as as in in SM SM gauge + contributions Effect due Effect due to H to H + contributions (600 (600- -800 800 GeV GeV) ) Ginzburg, , Osland Osland, MK , MK - - 2001 2001 Ginzburg

Littlest Higgs Higgs model model Littlest f – – scale scale of of new new heavy heavy particle particle; ; f Han,Logan,McElrath,Wang Han,Logan,McElrath,Wang 2003 2003

Beate Heinemann Heinemann at at LCWS2007 LCWS2007 Beate

MSSM Higgs searches/overall discovery MSSM Higgs searches/overall discovery potential (300 fb - ) at at LHC LHC potential (300 fb -1 1 ) at least 1 Higgs boson is obser vable • in some parts >1 Higgs bosons observable in the whole parameter space • but large area in which only one Higgs boson h (SM-like) observable LHC wedge Result assuming no H � SUSY Basic question: Could we distinguish SM and MSSM Higgs sector - e.g via rate measurements?

Spira et et al al Spira Niezurawski et et Niezurawski Covering the the LHC LHC wedge wedge Covering al.,- - simulation simulation al.,

Asner, , Gunion Gunion, , Asner Gronberg Gronberg

S.Y.Choi,J.Kalinowski,J.S.Lee, M.M. , M.M. Muhlleitner Muhlleitner, , S.Y.Choi,J.Kalinowski,J.S.Lee M.Spira,P.M.Zerwas- -0404119 0404119 M.Spira,P.M.Zerwas Determining tan tan β β in in τ τ - - τ τ fusion fusion to Susy to Susy Higgs Higgs Determining Bosons at at the the PLC PLC Bosons Zerwas et Zerwas et al al

Tau fusion fusion - -> tan beta > tan beta Tau � Background Background included included �

Accuracy … … Accuracy