1 / 61

From CP Violation to Electroweak Symmetry Breaking

From CP Violation to Electroweak Symmetry Breaking. ― a 4G Saga. July 8, 2010 , Lattice/Pheno Seminar @. I. Intro: Kobayashi-Maskawa & CPV4U 3G → 4G : Enough CPV for Baryogenesis? II. CPV4U: from Earth to Heaven * Earthly Thread

katy
Télécharger la présentation

From CP Violation to Electroweak Symmetry Breaking

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. From CP Violation to Electroweak Symmetry Breaking ― a 4G Saga July 8, 2010, Lattice/Pheno Seminar @

  2. I. Intro: Kobayashi-Maskawa & CPV4U 3G → 4G: Enough CPV for Baryogenesis? II. CPV4U: from Earth to Heaven * Earthly Thread B → Kp DCPV Difference; Bs→ J/yf & ASL * Heavenly Touch— Towards BAU * Unfinished on Earth III. Direct Search: Large Yukawa Coupling & EWSB? * Tevatron Thread Rising Bounds; 1 fb-1 @ 7 TeV; Unitarity Bound * Nambu Legacy: Holdom, Burdman & “Top Condensate” * Higgs-Yukawa on a LatticeEW Theory on a Lattice ? IV. Prospects: * Source of CPV4BAU(?) Discussion * Source of EWSB?

  3. I. Intro: Kobayashi-Maskawa & CPV4U

  4. aryon symmetry niverse (1967) CPV & BAU: The Sakharov View • Baryon Number V iolation • CP Violation • Deviation from Equilibrium 10-9Matterleft! 14Byr Bang Us Pair Annihilation (  Cosmic Microwave Background ) Equal Matter -Antimatter

  5. ui ► W Jm W– gVij ► dj Complex Dynamics: KM Sector of SM Wolfenstein parametrization 3x3 “Rotation” Unitary Need presence of all 3 generations to exhibit CPV in Standard Model

  6. KM CPV Confirmed ~ 2001 the MOMA plot “Nontrivial”

  7. The Nobel Prize in Physics 2008 "for the discovery of the origin of the broken symmetry which predicts the existence of at least three families of quarks in nature" "for the discovery of the mechanism of spontaneous broken symmetry in subatomic physics" CPViolation in SM 7 October 2008 Reading: WSH arXiv:0907.5044 [hep-ph] Lecture on the Nobel Prize B Factories (BaBar & Belle)

  8. Wolfenstein Parametrization to O(5) Unique CPV Phase: Common Area of Triangle N.B. geometric picture

  9. All like-charge quark pairs nondegenerate, • Otherwise  Back to 2-gen. and CPV vanish Jarlskog Invariant (1985) for CPV CPVso far only observed in KM ... • Nontrivial CPV Phase: A (area) • Nontrivial CPV iff J ≠ 0

  10. Kobayashi’s Nobel slides J seems short by at least 10-10 51

  11. WMAP Normalize by T ~ 100 GeV Small, but notToo small in SM is common (unique) area of triangle CPV Phase B.A.U. fromCPV in KM? The Lore. Too Small in SM Jarlskog Invariant in SM3 (need 3 generation in KM) EW Phase Transition Temperature Masses too Small! ~ v.e.v.

  12. s, c, b quarks too light v.e.v. Why Repeat ? “Flavor Problem”

  13. Heavenly Touch — Towards BAU

  14. b  d transitions consistent with SM b  s:the Current Frontier the MOMA plot “Nontrivial”

  15. A Real Hint ! , ... or Not !?

  16. Belle 2008 〈Nature〉: Simple Bean Count DA =AK+p0-AK+p-=+0.1640.037 4.4s +0.070.03vs-0.0940.020 b → s CPV Difference Is Large ! Exp. Established Belle + BaBar (+ CDF) And Not Predicted !

  17. Dispair Obligé Unexpected!

  18. “Nature” writing : Explaining CPV to “biologists” You get “out of your mind”.

  19. Order 1 ~ 30 B.A.U. fromCPV in KM? Enough CPV? WMAP Too Small in SM If shift by One Generation in SM4(need 3 generation in KM) Providence WSH, arXiv:0803.1234 [hep/ph] CJP’09 ~ 10+15 Gain Nature would likely use this !? Gain mostly in Large Yukawa Couplings !

  20. The Abyss between CPV in SM3 vs BAU bridged in SM4 by Heaviness of t’and b’ Why wasn’t this clearly pointed out in past 20 years?

  21. Hints of a new quark have turned up in the decay products of the Tevatron particle smasher A fourth generation of particles could explain how matter survived to form stars and galaxies If fourth-generation quarks are responsible for upsetting this balance, then we would not exist without them. "To me, this is the single most important motivation for the existence of [the fourth generation]," says George Hou of the National Taiwan University in Taipei. By a mere extension from three to four generations, he adds, we may have enough asymmetry to explain how matter survived annihilation in the early universe.

  22. Can all this be understood from my vantage? Still issue of Order of Phase Transition

  23. the Four Statements • “Beyond the 3SM generation at the LHC era” workshop, 9/2008 @ CERN • http://indico.cern.ch/conferenceDisplay.py?confId=33285 •  “Four Statements about the Fourth Generation” • arXiv:0904.4698 [hep-ph]  50+ citations within a year • 4G has warmed up • 2nd Workshop on “Beyond 3 Generation Standard Model • ― New Fermions at the Crossroads of Tevatron and LHC”, 1/2010 in Taipei • http://indico.cern.ch/conferenceDisplay.py?confId=68036

  24. II. CPV4U: from Earth to Heaven Earthly Thread: B → KpDirect CPV Difference It’s personal.

  25. 275M BB New Saga Towards Belle Nature Paper ... ACP(B  K+p0 ) Sakai Kp0 : 728 53 ACP(Kp0) = 0.04  0.05  0.02 hint thatACP(K+p- ) ¹ACP(Kp0 ) ? (2.4s) [also seen by BaBar] d p0 Large EW penguin (Z0) ? New Physics ? _ d B- b s K- u u ICHEP 2004, Beijing

  26. Belle 2004 PRL: Seed Y. Chao, P. Chang et al. by “yours truly” PEW Z’

  27. My first B (and 4G) paper WSH, Willey, Soni dimensions < nondecoupling

  28. Nondecoupling Decoupling Thm: Heavy Masses are decoupled in QED/QCD ∵Appear in Propagator Nondecoupling: Yukawa CouplingslQAppear in Numerator dynamical Subtlety of Spont. Broken Chiral Gauge Theory

  29. d p0 _ d B- b s K- u u ,t’ ,t’ DAKp= AK+p0-AK+p- ~ 15% and LO PQCD ⊕ 4th Gen. WSH, Nagashima, Soddu, PRL’05 DAKp 12% vs 15% (data)

  30. Bs Mixing vsB  Xsℓ+ℓ- different nondecoupl. functions Large CPV in Bs Mixing

  31. WSH, Nagashima, Soddu, hep-ph/0610385 (PRD’07) SM (high) rsb • Fixed rsb➯ Narrow fsb Range • destructive with top • For rsb ~ 0.02 – 0.03, [Vcb ~ 0.04 • fsb Range ~ 60°-70° CDF2srange FiniteCPV Phase Consistent w/ B(bsll) SM-like ! HFAG 1srange Large CPV Possible ! Despite DmBs, B(bsll) SM-like

  32. a walk-thru exercise WSH, Nagashima, Soddu, hep-ph/0610385 (PRD’07) SM (high) rsb • Fixed rsb➯ Narrow fsb Range • destructive with top • For rsb ~ 0.02 – 0.03, [Vcb ~ 0.04 • fsb Range ~ 60°-70° CDF2srange FiniteCPV Phase Consistent w/ B(bsll) SM-like ! HFAG 1srange Large CPV Possible ! Despite DmBs, B(bsll) SM-like

  33. Large CPV in Bs Mixing WSH, Nagashima, Soddu, hep-ph/0610385 (PRD’07) SM (high) rsb DAKp, DS the only use of DCPV Diff. CDF2srange Can Large CPV in Bs Mixing Be Measured @ Tevatron ? Sign Predicted ! Sure thing by LHCb ca. 2008 sin2FBs ~ -0.5 - -0.7 sin2FBs ~ 0.5 - 0.7 ? Despite DmBs, B(bsll) SM-like

  34. sin2FBs~ -0.5 --0.7 WSH, Nagashima, Soddu, PRD’07 arXiv:0712.2397 [hep.ex] arXiv:0802.2255 [hep.ex] 3.7s +0.16 -0.14 sin2FBs=-0.64 UTfit arXiv:0803.0659 [hep.ph] (already in 05) PRL’08 PRL’08 Further ICHEP’08 Updates (CDF/DØ/fitters): Strengthen ! Summer ’09 2.1 ~2.8s ± ? Incredible !!!

  35. Hints of a new quark have turned up in the decay products of the Tevatron particle smasher A fourth generation of particles could explain how matter survived to form stars and galaxies

  36. Fermilab Wine & Cheese Seminar, 14 May 2010 arXiv:1005.2757 [hep-ex] Evidence for an anomalous like-sign dimuon charge asymmetry G.Borissov Lancaster University, UK

  37. preliminary combination • Our (preliminary) combination of all measurements of semileptonic charge asymmetry shows a similar deviation from the SM. SM Dimuon charge asymmetry - Fermilab Wine & Cheese seminar

  38. Comparison with other measurements • Obtained value of assl can be translated into the measurement ofthe CP violating phase sand ΔΓs • This constraint is in excellent agreement with an independent measurement of sand ΔΓs in Bs→J/ψ decay • This result is also consistent with the CDF measurement in this channel Dimuon charge asymmetry - Fermilab Wine & Cheese seminar

  39. CDF Update at FPCP, May 2009 bs seems smaller

  40. Can One Comprehend This ? Comparison with other measurements sin2FBs =- sin2bs=sinfs • Dzero & CDF consistent, but sin2FBs “smaller” than before. • If Dzero result stays, probably larger than Lenz-Nierste. • Obtained value of assl can be translated into the measurement ofthe CP violating phase sand ΔΓs • This constraint is in excellent agreement with an independent measurement of sand ΔΓs in Bs→J/ψ decay • This result is also consistent with the CDF measurement in this channel see WSH & Mahajan, PRD’07 also: Grossman, PLB’96 Dunietz, Fleischer, Nierste, PRD‘01 Dimuon charge asymmetry - Fermilab Wine & Cheese seminar

  41. sin2FBs~ -0.5 --0.7 sin2FBs ~ -0.33 WSH, Nagashima, Soddu, PRD’07 WSH, Ma, arXiv:1004.2186 [hep-ph] (already in 05) Also, Soni et al., arXiv:1002.0595 [hep-ph] Buras et al. arXiv:1002.2126 [hep-ph] Lenz et al., arXiv:1005.3505 [hep-ph] 4th generation “prediction” still robust, but needs LHCb to verify.

  42. Unfinished on Earth AFB(B  K*l+l-) and Other Predictions sent to Backup

  43. On Boxes and Z Penguins Nondecoupling GIM, charm,K ∵ Large Yukawa! small ’/, K  pnn (still waiting) heavy top, sin2f1/b Bs Z dominance for heavy top AFB 1986  2002 All w/ 3-generations, Just wait if there’s a 4th D ! b’,t’ @ (Tevatron/)LHC

  44. III. Direct Search:Large Yukawa Coupling & EWSB? Tevatron Thread Nambu Legacy Higgs-Yukawa on Lattice

  45. Tevatron Thread Tevatron t’ and b’ Search Status CDF Note 9234 CDF/PUB/TOP/PUBLIC/10110 t’ → Wq arXiv:0912.1057 [hep-ex] PRL2010 b’ → Wt same sign dileptons 2.7/fb

  46. High HT ~ 2s Mt’~ 450 GeV? Cross Section too large Mreco excess?

  47. Hints of a new quark have turned up in the decay products of the Tevatron particle smasher A fourth generation of particles could explain how matter survived to form stars and galaxies The excess is small enough to be a statistical fluke, so the team is not claiming to have seen signs of a fourth generation. "Extraordinary claims require extraordinary evidence, and we definitely don't have that," admits John Conway of the University of California at Davis, one of the study's authors. If fourth-generation quarks are responsible for upsetting this balance, then we would not exist without them. "To me, this is the single most important motivation for the existence of [the fourth generation]," says George Hou of the National Taiwan University in Taipei. By a mere extension from three to four generations, he adds, we may have enough asymmetry to explain how matter survived annihilation in the early universe.

  48. same sign dileptons LO Partial Wave Unitarity Bound With~100 pb-1

More Related