Beyond the Standard Model Phenomenology. Shufang Su U. of Arizona

Transcription

1 Beyond the Standard Model Phenomenology DOE Review 2009 Shufang Su U. of Arizona Copyright S. Su CERN DOE Review, 2009 (Photo courtesy of Maruša Bradač.)

2 Low energy Precision measurement LEP Experiments Tevatron (now) LC LHC (2009) (2008( 2008) e + e p p p p S. Su DOE Review,

3 Data from sky: WMAP, supernovae, sky survey, Low energy Precision measurement LEP Experiments Tevatron (now) LC LHC (2009) (2008( 2008) e + e p p p p S. Su DOE Review,

4 We live in a fascinating time when rich data is/will be available SM is successful Measurement Fit O meas!o fit /" meas #$ (5) had (m Z ) ± m Z [GeV] ± % Z [GeV] ± " 0 had [nb] ± R l ± A 0,l fb ± A l (P & ) ± R b ± R c ± A 0,b fb ± A 0,c fb ± A b ± A c ± A l (SLD) ± sin 2 ' lept eff (Q fb ) ± m W [GeV] ± % W [GeV] ± m t [GeV] ± March S. Su DOE Review,

5 We live in a fascinating time when rich data is/will be available SM is successful Measurement Fit O meas!o fit /" meas #$ (5) had (m Z ) ± m Z [GeV] ± Origin of mass: EWSB % Z [GeV] ± " 0 had [nb] ± R l ± A 0,l fb ± A l (P & ) ± R b ± R c ± A 0,b fb ± A 0,c fb ± A b ± A c ± A l (SLD) ± sin 2 ' lept eff (Q fb ) ± m W [GeV] ± % W [GeV] ± m t [GeV] ± ? March S. Su DOE Review,

6 We live in a fascinating time when rich data is/will be available SM is successful Higgs mechanism Measurement Fit O meas!o fit /" meas #$ (5) had (m Z ) ± m Z [GeV] ± % Z [GeV] ± " 0 had [nb] ± R l ± A 0,l fb ± A l (P & ) ± R b ± R c ± A 0,b fb ± A 0,c fb ± A b ± A c ± A l (SLD) ± sin 2 ' lept eff (Q fb ) ± m W [GeV] ± % W [GeV] ± m t [GeV] ± March S. Su DOE Review,

7 We live in a fascinating time when rich data is/will be available SM is successful Higgs mechanism Measurement Fit O meas!o fit /" meas #$ (5) had (m Z ) ± m Z [GeV] ± % Z [GeV] ± " 0 had [nb] ± R l ± A 0,l fb ± A l (P & ) ± R b ± R c ± A 0,b fb ± A 0,c fb ± A b ± A c ± A l (SLD) ± sin 2 ' lept eff (Q fb ) ± m W [GeV] ± % W [GeV] ± m t [GeV] ± Hierarchy problem March S. Su DOE Review,

8 We live in a fascinating time when rich data is/will be available SM is successful Measurement Fit O meas!o fit /" meas #$ (5) had (m Z ) ± m Z [GeV] ± % Z [GeV] ± " 0 had [nb] ± R l ± A 0,l fb ± A l (P & ) ± R b ± R c ± A 0,b fb ± A 0,c fb ± A b ± A c ± A l (SLD) ± sin 2 ' lept eff (Q fb ) ± m W [GeV] ± % W [GeV] ± m t [GeV] ± March 2009 Higgs mechanism Hierarchy problem only 4% is known S. Su DOE Review,

9 My work focuses on searching for new physics beyond the SM S. Su DOE Review,

10 My work focuses on searching for new physics beyond the SM Involve experiments in Nuclear physics Particle physics Astrophysics/Cosmology S. Su DOE Review,

11 My work focuses on searching for new physics beyond the SM Involve experiments in Nuclear physics Particle physics Astrophysics/Cosmology Direct Searches S. Su DOE Review,

12 My work focuses on searching for new physics beyond the SM Involve experiments in Nuclear physics Particle physics Astrophysics/Cosmology Direct Searches Indirect Searches S. Su DOE Review,

13 My work focuses on searching for new physics beyond the SM Involve experiments in Nuclear physics Particle physics Astrophysics/Cosmology Dark Matter Direct Searches Indirect Searches S. Su DOE Review,

14 Students and Postdoc Postdoc HockSeng Goh ( ) Berkeley Brooks Thomas (group postdoc, 2007 now) Graduate Students Ethan Dolle (7 th year) Xinyu Miao (6 th year) Potential: Omar Shams (1 th year) Undergraduate Students Jessica Goodman Univ. of California, Irvine, particle theory Will Parker Univ. of Wisconsin, Madison, CMS group Kara Farnsworth James Kieler S. Su DOE Review,

15 Dark Matter Studies S. Su DOE Review,

16 Synthesis only 4% is known S. Su DOE Review,

17 Synthesis only 4% is known S. Su DOE Review,

18 Dark matter and new physics DM provide precise, unambiguous evidence for new physics In many BSM theories, DM is easier to explain than no DM Dark Matter: new stable particle there are usually many new weak scale particle constraints (proton decay, large EW corrections) discrete symmetry stability good dark matter candidate S. Su DOE Review,

19 Synergy S. Su DOE Review,

20 Synergy Collider Inputs Weakscale Parameters DM Annihilation DMN Interaction S. Su DOE Review,

21 Synergy Collider Inputs Weakscale Parameters DM Annihilation DMN Interaction Relic Density Indirect Detection Direct Detection Astrophysical and Cosmological Inputs S. Su DOE Review,

22 Synergy Collider Inputs Weakscale Parameters DM Annihilation DMN Interaction Relic Density Indirect Detection Direct Detection Astrophysical and Cosmological Inputs S. Su DOE Review,

23 Dark Matter Studies Dark Matter in the LeftRight Twin Higgs Models E. Dolle (U. of Arizona) Dark Matter in the LeftRight Twin Higgs Model E. Dolle and S. Su, Phys. Rev. D77 (2008) ! h ! h (GeV) M S (GeV) S. Su DOE Review, M S

24 Dark Matter Studies Dark Matter in the Inert Higgs Doublet Model E. Dolle (U. of Arizona) The Inert Dark Matter E. Dolle and S. Su, Phys. Rev. D 80 (2009) _50_8 120_1_1! L !0.1!0.2!0.3!0.4!0.5! S. Su m S [GeV] DOE Review, 2009 m [GeV] S 11! L !0.1!0.2!0.3!0.4

25 Dark Matter Studies Dark Matter in the Inert Higgs Doublet Model (cont ) P. Agrawal(U. of Maryland), E. Dolle, C. Krenke (U. of Arizona) Signals of Inert Doublet Dark Matter in Neutrino Telescopes. P. Agrawal, E. Dolle and C. Krenke, Phys. Rev. D 79 (2009) m H =200 GeV! 1 =50 GeV,! 2 =10 GeV m H =200 GeV! 1 =50 GeV,! 2 =10 GeV Events (km!2 yr!1 ) !1 10!2 10!3 10! Events (km!2 yr!1 ) !5 10!1 10!6 10! m S (GeV) 10! m S (GeV) S. Su DOE Review, m H =200 GeV ! =50 GeV,! =50 GeV

26 Dark Matter Studies Dark Matter in the Inert Higgs Doublet Model (cont ) E. Dolle (U. of Arizona) Indirect Detection via Gamma Rays E. Dolle and S. Su, in preparation. d"/de! (photons cm!2 s!1 GeV!1 ) 10!7 10!8 10!9 10!10 10!11 10!12 10!13 10!14 10!15 10!16 10!17 FST HESS 8 9 Veritas S. Su 10! DOE Review, E! (GeV)

27 Direct Searches for New Physics S. Su DOE Review,

28 Direct Searches Dilepton Signals in the Inert Doublet Model E. Dolle, X. Miao, B. Thomas (U. of Arizona) Collider Signatures of Dark Matter in the IHDM E. Dolle, S. Su, B. Thomas, X. Miao, arxiv: , submitted to Phys. Rev. D. +W (*) H ± A + Z (*) +W (*) pp SA SSZ ( ), SSW ( ) W ( ) S Signatures: jets + leptons + missing ET S. Su DOE Review,

29 Direct Searches Signal: pp SA SSZ SSl + l, l=e,µ LH2: ms = 40 GeV, (δ1, δ2)=(70,70) GeV Mll < 70 GeV #!! #!!# WW ZZ/γ t t W Z/γ SA & dσ dmll/1gev 1 σ #!!% WW SA t t #!!$ & W Z/γ ZZ/γ! "! #!! #"! M ll (GeV) S. Su DOE Review,

30 Direct Searches Signal: pp SA SSZ SSl + l, l=e,µ Level III Cuts Benchmark σ SA σ H + H σ hz σ WW σ ZZ/γ σ t t σ W Z/γ σ Wt σbg comb (fb) (fb) (fb) (fb) (fb) (fb) (fb) (fb) (fb) S/B S/ B LH LH LH LH LH HH HH HH TABLE V: Crosssections for the processes pp SA l + l E T, pp H + H l + l E T, and pp h ( ) Z l + l E T at the LHC for each of the benchmark points presented in Table I after the application of our Level III cuts. Crosssections for the dominant SM backgrounds (WW, ZZ/γ,etc.) after the application of the Level III cuts are also shown, as is the total background crosssection S. Su including all of these individual DOE contributions. Review, 2009 An entry of 0 indicates 17 a crosssection less than 1 ab. The last two columns display the signaltobackground ratio S/B and

31 Direct Searches Exotic 4th generation quarks J. Alwall (National Taiwan Univ.), J. Feng (UCIrvine), J. Kumar (Univ. of Hawaii) DMMotivated Searches for Exotic 4th Generation Quarks at the Tevatron and Early LHC Data J. Alwall, J. L. Feng, J. Kumar, S. Su, F. Takayama, in preparation. DM DM p Y p Y b DM t DM p Y b p Y t S. Su DOE Review,

32 Dark Matter Studies Exclusion for T T! t X t X at the Tevatron (GeV) m X m T 1 10 fb 1 5 fb 1 2 fb = m X + M t 1 20 fb 0lepton cuts (GeV) m X Discovery of t t! t X t m T 1 10 fb = m X + M t 1 20 fb X at the Tevatron fb m T (GeV) m T (GeV) S. Su DOE Review,

33 Direct Searches Phenomenology of the leftright twin Higgs models H.S. Goh (U. of Arizona) Phenomenology of the LeftRight Twin Higgs Models H.S. Goh, S. Su, Phys. Rev. D75 (2007) S. Su DOE Review,

34 Direct Searches Phenomenology of the leftright twin Higgs models H.S. Goh (U. of Arizona) Phenomenology of the LeftRight Twin Higgs Models H.S. Goh, S. Su, Phys. Rev. D75 (2007) S. Su DOE Review,

35 Direct Searches Phenomenology of the leftright twin Higgs models H.S. Goh (U. of Arizona) Phenomenology of the LeftRight Twin Higgs Models H.S. Goh, S. Su, Phys. Rev. D75 (2007) dd,ss,bb Z H decay Br (%) h!0 tt uu,cc TT tt l + l! " " l l!+!! Zh,W+W! ^ ^ ^ ^ h1h1,h2h2 10! (GeV) m ZH S. Su DOE Review,

36 Direct Searches Phenomenology of the leftright twin Higgs models H.S. Goh (U. of Arizona) Phenomenology of the LeftRight Twin Higgs Models H.S. Goh, S. Su, Phys. Rev. D75 (2007) dd,ss,bb Z H decay Br (%) h!0 tt uu,cc TT tt l + l! " " l l!+!! Zh,W+W! ^ ^ ^ ^ h1h1,h2h2 10! (GeV) m ZH S. Su DOE Review,

37 Direct Searches Discovery potential for the heavy top quark Xinyu Miao (U. of Arizona) Collider Studies of the Heavy Top Quark in the LeftRight Twin Higgs Models X. Miao and S. Su, contribution to Les Houches 2007 proceeding, arxiv: b + 1 j + 1 lepton + missing E T b j Miao/Su b f (GeV) th φ ± t b W l ν S/ B σ before S σ after S σ after B ble 2: Results for the cascade decay of heavy top from S. Su DOE Review,

38 Direct Searches Leptophilic Higgs B. Thomas (U. of Arizona) H µµ in tth at the LHC B. Thomas, S. Su, Phys. Lett. B 677 (2009) 296. The LHC discovery potential of a leptophilic Higgs B. Thomas, S. Su, Phys. Rev. D79 (2009) Statistical Significance tth(h" bb) gg" h " ## WBF(h" WW) h" ZZ h" WW 5! Statistical Significance WBF(h" ##) tth(h" ##) gg" h " ## WBF(h" µµ) tth(h" µµ) gg" h " µµ 5! 10 1 L2HDM L=30 fb 1 L2HDM L=30 fb S. Su DOE Review, m 22 m (GeV) h (GeV) h 10 1

39 Direct Searches Sbottom in the SUSY Golden Region W. Parker (U. of Wisconsin, Madison), H. Li, Z. Si (Shandong Univ.) Discovery Sbottom in the SUSY Golden Region H. Li, W. parker, Z. Si, S. Su, in preparation. h µµ in Wh, Zh channel B. Thomas (U. of Arizona). M. Schmitt (Northwestern Univ.) Inclusive h µµ signatures B. Thomas, M. Schmitt, S. Su, in preparation. S. Su DOE Review,

40 Indirect Searches for New Physics S. Su DOE Review,

41 Møller Scattering e e γ Z e e Purely leptonic Atomic Parity Violation e γ Z Cs 133 QWeak (JLab) e γ 1d S. Su DOE Review, Z Coherent quarks in P Results in ~2009 2(2C 1u +C 1d ) Coherent quarks in entire nucleus Nuclear structure uncertainties 376 C 1u 422 C 1d e W DISParity p n e γ Z Isoscaler quark scattering (2C 1u C 1d )+Y(2C 2u C 2d ) Neutrino Scattering ν µ ν + Quark scattering (from nucleus) Weak charged and neutral current difference Z e ν

42 Indirect Searches Low Energy Precision Supersymmetry A. Kurylov (Caltech), M. RamseyMusolf (UW Madison), S. Tulin (Caltech) Supersymmetric Effects in Parity Violating Deep Inelastic Electron Nucleus Scattering A. Kurylov, M. RamseyMusolf, S. Su, Phys.Lett.B582:222228,2004. Probing Supersymmetry with Parity Violating Electron Scattering A. Kurylov, M. RamseyMusolf, S. Su, Phys.Rev.D68:035008,2003. Supersymmetric Effects in Deep Inelastic Neutrino Nucleus Scattering A. Kurylov, M. RamseyMusolf, S. Su, Nucl.Phys.B667:321348,2003. Pion Leptonic Decay and Supersymmetry M. RamseyMusolf, S. Su, S. Tulin, Phys. Rev. D 76 (2007) S. Su DOE Review,

43 Indirect Searches for NP Low Energy Precision Supersymmetry (cont ) Low Energy Precision Test of Supersymmetry M. RamseyMusolf, S. Su, Phys. Rept. 456 (2008) 1. Contents I. Introduction 1 II. Minimal Supersymmetric Extension of Standard Model 3 A. Introduction 3 B. The Minimal Supersymmetric Extension of Standard Model 5 C. Soft SUSY Breaking 7 D. Superparticle Spectrum 9 E. SUSY Interactions 13 F. Rparity Violating Interactions 15 G. SUSY Searches 17 H. The Muon Anomalous Magnetic Moment and SUSY 18 V. Neutral Current Experiments 61 A. Introduction 61 B. Parity Violating Electron Scattering: Møller and Qweak 64 C. ElectronDeuterium Parity Violating Deep Inelastic Scattering 70 D. Atomic Parity Violation 73 E. NeutrinoNuclei Deep Inelastic Scattering 74 VI. Flavor, CP, Neutrinos, and Cosmology 77 A. General Considerations 77 B. Lepton Flavor and Number Violation 81 C. R Parity Violation and Neutrino Mass 87 D. EDM Searches: Implications for SUSY 88 E. SUSY Baryogenesis and Dark Matter 96 III. Renormalization 24 A. Charged Current Processes 25 VII. Zpole Electroweak Precision Measurements 102 B. Neutral Current Processes 29 A. Precision Observables 102 C. Theoretical Uncertainties in Electroweak Radiative Corrections 36 B. SM Global Fit 104 C. MSSM Contributions to the Precision Observables 105 IV. Charged Current Processes 38 D. Global Analysis in the msugra and the GMSB 106 A. Muon Decay 39 VIII. The Experimental Limit on the MSSM Neutral Higgses 107 B. Semileptonic Decays of Light Quark Systems: General Considerations 43 C. Superallowed Nuclear Decays 52 IX. Conclusions and Outlook 110 D. βdecay Correlations 54 E. Pion βdecay 56 Acknowledgments 111 F. Kaon decays and V us 57 G. CKM Unitarity Tests: Implications for SUSY 59 References 111 S. Su DOE Review,

44 Indirect Searches Electroweak precision analysis in various SUSY breaking scenarios S. Heinemeyer (Instituto de Fisica de Cantabria), X. Miao (U. of Arizona), G. Weiglein (Durham) B Physics Observables and Electroweak Precision Data in the CMSSM, mgmsb and mamsb S. Heinemeyer, X. Miao, S. Su and G. Weiglein, JHEP 08 (2008) BR(b > s!) CMSSM mgmsb mamsb tan! CMSSM all " 9 " 4 " M A [GeV] S. Su m~ t [GeV] DOE Review,

45 Indirect Searches Electroweak precision analysis in AMSB K. Farnsworth (U. of Arizon), S. Heinemeyer (Instituto de Fisica de Cantabria), X. Miao (U. of Arizona), G. Weiglein (Durham) Distinguishing AMSB scenarios via Precision Observables K. Farnsworth, S. Heinemeyer, X. Miao, S. Su and G. Weiglein, work in progress SUSY contributions to the low energy/zpole observables J. Kyle (Brookhaven), M. RamseyMusolf (Madison), S. Tulin (Caltech) Analysis of Precision Observables in Supersymmetry J. Kyle, M. RamseyMusolf, S. Su and S. Tulin, in preparation. S. Su DOE Review,

46 Other Activities S. Su DOE Review,

47 Organization of conferences/workshops Organize KITPC 2008 program: New physics beyond the Standard Model. Sep 1st Nov 21, International Organizing Committee: Tao Han, YuPing Kuang, Gordon Kane,Shufang Su,R. Sekhar Chivukula 12 weeks long program, budget of about $130 K, around 40 oversea participants S. Su DOE Review,

48 Organization of conferences/workshops Organizer for Aspen 2009 Summer Program: Beyond the Standard Model Physics at the Threshold Convener for ALCPG07 and ALCPG09, physics working group: Charged Particle Momentum Mesurement, V0 Reconstruction, and Identification of Stable Charged Particles Convener for muon collider workshop (09), physics working group: Higgs Physics Serve as coordinators for the group: Connection to Astro and Cosmo of LHC wiki page ( S. Su DOE Review,

49 Future Plans Collider related physics: understand what data really means Communicate (more) with our exp neighbour (LHC/ ALTAS, D0) Train students to work on collider (LHC) physics simulation tools for new physics and SM background experimental physics observables/ capabilities New physics phenomenology / distinguish various new physics Connection to cosmology New candidate for dark matter Collider studies of dark matter properties S. Su DOE Review,

50 !ank y"! S. Su DOE Review,