1 / 73

Exploring New Physics in CP Violation at FAPPS2008

Join us on September 22 at Les Houches for a journey into the realm of flavor physics. This lecture series delves into CP violation, past and present experimental perspectives, and strategies for uncovering physics beyond the Standard Model. Discover the intricacies of b→s transitions, electroweak penguins, and RH currents, and explore the fascinating world of bottomonium and D/K mixing. With a mix of theoretical and experimental insights, this event promises to be enlightening for physicists and enthusiasts alike.

lauriefrey
Download Presentation

Exploring New Physics in CP Violation at FAPPS2008

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. Flavour Physics I Searching for New Physics in CP Violation September 22, FAPPS2008 @ Les Houches

  2. Child Eating Giant (LHC/ILC?) the(un)Heavenly Things e. v. v. Higgs Castle c l o u d s http://pbjc-lib.state.ar.us/mural.htm Down to Earth Flavour/TeV ≅ Loops

  3. Strategy and Apologies • Experiment Perspective • Pertinent to BSM • Physics (vs Expt’l detail — not always most up-to-date) • [TH tooooo diverse • Shorter-term impact (LHC almost on) and not too tricky ... • “Traditional” on BSM topics • Cannot cite all TH work, • but unabashedly promote own pheno work

  4. Outline Lecture I Lecture II b  s 0 Past as Intro —What if ? sin2FBd & DmBd, top and Vtd;CP Violation Primer; B Factory I CPV in b  s w/ Boxes and Penguins DS; DAKp;sin2FBs; ACP(B+  J/yK+) II H+ Probe: b  sg;B (D(*))tn III Electroweak Penguin:AFB(B K*ℓℓ);B K(*)nn IV RH Currents and Scalar Interactions TCPV in B X0g;Bs  mmIII’ Bottomonium V D/K: Box and EWP Redux —D0 mixing;Rare K VI t: LFV and (B-L)V t  ℓg, ℓℓℓ’; [t  Lp, pp0] VII Conclusion [Addendum Very Heavy Flavor (Single) top; t’; b’ (?) etc.]

  5. Lecture I Outline 0 Past as Intro What if ?DmBd, top and Vtd I CP Violation Preliminaries II CP Violation Primer III B Factories and TCPV in B → J/yKS IV CPV inb  sStrong and EW Penguins DS; DAKp;ACP(B+ J/yK+) V CPV inb  sBox sin2FBs; VI The Big Issue — Source of CPV for BAU VII Conclusion

  6. 0. Past as Intro

  7. What If ? sin2b/f1 history (1999-2005) b/f1=-argVtd Observation claimed R. Cahn -- SSI-2006

  8. What if argVtd ~ 0? Babar Physics Book (Definite BSM !) Would have heard More about it.

  9. t CPV Phase Nondecoupling— lt~ 1 DmBd, top and Vtd b/f1=-argVtd “Higgs Affinity” top, a v.e.v. scale quark, “discovered” 20 years ago (ARGUS) DmBd Loops

  10. ~ “Higgs Affinity” 2 x W propagator DmBd, top and Vtd b/f1=-argVtd CPV Phase sin2b/f1 Loops

  11. I. CP Violation Preliminaries

  12. (1966) CPV & BAU (& U): The Sakharov View • Baryon Number V iolation • CP Violation(“Direction”) • Nonequilibrium (“Direction”) 10-9 Matter left! Bang Us Pair Annihilation (  Cosmic Microwave Background ) Equal Matter -Antimatter

  13. Sakharov Stimulated by ... Phys. Rev. Lett. 13, 138 (1964) Discovery of CP Violation

  14. i in Quantum Mechanics Schrödinger Eq. proton/neutron Diffusion Eq., except for i electron photon Waves:Particle-Waves Everything is Wave Phenomena, but also “corpuscular” (Newton not wrong) Waves Interfere: Add in Amplitude Even for Particle, or High Energy Physics

  15. i in Dynamics: CPV & BAU (everyone can feel ElectroMagnetism: Charge e is Real. “We” Understand: Gauge Charge is Real. Imagine a Complex Coupling : True, or, Possible, for Yukawa (湯川) Coupling of quarks/leptons to Higgs boson(s)... Quantum InterferenceinAmplitudeMore Interesting How CP Violation Appears

  16. II. CP Violation Primer

  17. CP Asymmetry needs both CP Conserv/Violating Phase CP Violation Primer AntiParticle Process Particle Process

  18. Complex Dynamics VCKM 3x3 “Rotation” Unitary Need presence of all 3 generations to exhibit CPV in Standard Model

  19. CPV Phase Most Intuitive: “Direct” CPVin B → Kp DCPV Interference Penguin Tree N.B. Would need also CP Conserving Phase Differenced

  20. Loop

  21. B0 M12 B0 t-dep. CPV Primer CPV in Mixing-Decay Interference B A M12 Ā A: Decay Amplitude B M12 : Mixing Amplitude CP conserv. B0 B0Oscillations: eiDmt Interference of Two Types of Phases

  22. CP Asymmetry needs both CP Conserv/Violating Phase CP Violation Primer AntiParticle Process Particle Process d2 =Dmt TCPV:

  23. III. B Factories and TCPV in B → J/yKS

  24. CPV in B0→ B0Mixing V*2 td No CPV in B → J/yKSDecay Carter-Sanda; Bigi-Sanda J/y Vcb B0 KS  J/y V* Vtb td B0 B0 KS Vtb V* sin2b/f1 td M12

  25. BaBar Belle Differ only in PID DIRC vs Aerogel Cherenkov + ToF The Two B Factories Mt. Tsukuba PEP-II KEKB Tag Flavor

  26. KEKB Accelerator 8GeV electron 3.5GeV positron KEKB Collider B el le 美(人)

  27. Belle B0 or B0 The $1B Question: Mixing-dep. CPV in B→J/yKS B decays in ~ picosecond One B Decay Tag Flavor Other B Decay CP Eigenstate Measure Both Decay Vertex J/yKS, p+p-, h’KS, fKS, KSp0 2001 ! Focus Since Dz Dt

  28. Belle Detector ACC (PID) Aerogel Cherenkov Counter n=1.015~1.030 SC Solenoid 1.5T 3.5 GeVe+ ECL CsI(Tl) 16X0 TOF 8 GeVe- CDC Central Drift Chamber small cell +He/C2H6 KLM m/KL detection 14/15 lyr. RPC+Fe SVD Si Vertex Detector 3(4) lyr. DSSD

  29. b  d transitions consistent with SM Our Main Theme What about b  s transitions ?

  30. IV. CPV in b  s Strong and EW Penguins The Current Frontier tm Echoes

  31. Belle B0 or B0 The $1B Question: Mixing-dep. CPV in B→J/yKS B decays in ~ picosecond One B Decay Tag Flavor Other B Decay CP Eigenstate Measure Both Decay Vertex J/yKS, p+p-, h’KS, fKS, KSp0 2001 ! Dz Dt

  32. SM (KM) Prediction SfKS= sin2f1 b Possible SUSY FCNC/CPV Loop Can Break Equality b  sPenguins (Vertex Loops) Real ~ J/yKS(Tree)

  33. Smaller than bgccs in almost all modes Theory Expect sin2f1 > sin2f1 s-penguin cc(bar)s DS = Ssqq- Sccs< 0 “Problem” Need Super B Factory to Resolve ! Naïve average of all b g s modes sin2beff = 0.56 ± 0.05 2.1s deviation (was 2.6)btwn b g sqq and b g ccs New Physics !? Even deviation of ~ few deg indicate NP Need More Data ! Sinha, Misra, WSH, PRL 97, 131802 (2006)

  34. Belle B0 or B0 The $1B Question: Mixing-dep. CPV in B→J/yKS B decays in ~ picosecond One B Decay Tag Flavor Other B Decay CP Eigenstate Measure Both Decay Vertex J/yKS, p+p-, h’KS, fKS, KSp0 2001 ! Lack of Vertex, or too many g’s for LHCb Dz Dt

  35. Belle Nature’08 paper Acp on B → Kp DAKp Problem Experiment is Firm Belle +0.007 Acp = -0.107±0.018 -0.093±0.018±0.008 -0.086±0.023±0.009 -0.004 Direct CPV established in B system (2004) !  World Average including CLEO: Acp(K+p-) = -0.097±0.012  Acp(K+p0) = +0.050±0.025  DA(Kp) = 0.147 ± 0.027 @5s  Need to explain the deviation. Hadronic effect or new physics?  A(K0p0) = -0.12±0.11; S(K0p0) = +0.33±0.21  Super B factory! P. Chang 0707.2980 [hep-ex] A(K0p0) = -0.24 ± 0.15 ± 0.03, S(K0p0) = 0.40 ± 0.23 ± 0.03 6

  36. +0.0500.025 -0.0970.012 ? A lot of (hadronic) finesse d p0 _ d b s B- K- u u World = +0.1470.028> 5s Experiment is Firm Difference is Large! DAKp~ 0 expected Why aPuzzle ? Large C ? Large EWPenguin? Baek, London, PLB653, 249 (2007) Need NP CPV Phase PEW has practically no weak phase in SM t, ?

  37. My first B paper dimensions nondecoupling

  38. +0.0500.025 -0.0970.012 ? A lot of (hadronic) finesse d p0 _ d b s B- K- u u World = +0.1470.028> 5s Experiment is Firm DAKp~ 0 expected Why aPuzzle ? Large C ? Large EWPenguin? Baek, London, PLB653, 249 (2007) Need NP CPV Phase PEW has practically no weak phase in SM t, ? t, t’ 4th Gen. in EWP Natural nondecoupling

  39. DmBs • DGBs In Search ofNew Physics b  sCPVPhenomena Is Current NP Frontier • Sfinb sqq • AK+p--AK+p0 Puzzle Two Hints TCPV (?) Mixing-dep. DCPV Direct sin2FBs CPV ? SM-like cos2FBs

  40. V. CPV in b  s Box sin2FBs The Current Frontier tm Echoes

  41. 3 fb-1 ⇨ > 4 fb-1

  42. FBs≡-argVts ~ -0.02 SM b/f1=-argVtd⇨FBd ~0.37 measured 2006 e.g. PRL 97, 242003 (2006) ms = 17.770.10(stat)0.07(sys) ps-1 Window on BSM CPV ? ~ real a bit “smallish”, if take nominal fBs

  43. CDF/DØ: 8 fb-1 projected • s(sin2FBs) ~ 0.2 (?)/exp • similar • LHCb : 0.5 fb-1 (2008 ?) • s(sin2FBs) ~ 0.04 • ATLAS : 2.5 fb-1 (2008 ?) • s(sin2FBs) ~ 0.16 • CMS ? FBsProspect (short term) Bs J/ analogous toBdJ/KS VVVertex& Angular Resolved Analysis to disentangle CP +/- components Nakada @ fLHC 3/07

  44. (?) LHC Physics Run Starts 2008 Forward Design

  45. LHCb : 0.5 fb-1 (2008 ?) • s(sin2FBs) ≃ 0.04 • ATLAS : 2.5 fb-1 (2008 ?) • s(sin2FBs) ≃ 0.16 • CMS ? $ Tevatron could get lucky ifsin2FBslargeNew Physics ! FBsProspect (short term) Bs J/ analogous toBdJ/KS VV Angular & Vertex Resolved Analysis to disentangle CP +/- components • CDF/DØ: 8 fb-1 projected • s(sin2FBs) ≃ 0.2 (?)/exp • similar €LHCb the winner if ~ SM sin2FBs ~ -0.04in SM But 2009 looks interesting ! Could Tevatron run beyond 2008 ? Nakada @ fLHC 3/07

  46. LHCb : 0.5 fb-1 (2008 ?) • s(sin2FBs) ≃ 0.04 • ATLAS : 2.5 fb-1 (2008 ?) • s(sin2FBs) ≃ 0.16 • CMS ? $ Tevatron could get lucky ifsin2FBslargeNew Physics ! FBsProspect (short term) Bs J/ analogous toBdJ/KS VV Angular & Vertex Resolved Analysis to disentangle CP +/- components • CDF/DØ: 8 fb-1 projected • s(sin2FBs) ≃ 0.2 (?)/exp • similar €LHCb the winner if ~ SM sin2FBs ~ -0.04in SM But 2009 looks interesting ! Could Tevatron run beyond 2009 ? Nakada @ fLHC 3/07

  47. d _ d p0 • DmBs • DGBs t,t’? b s B- K- u u In Search ofNew Physics b  sCPVPhenomena Is Current NP Frontier Can sin2FBs belarge? • Sfinb sqq • AK+p--AK+p0 Puzzle Two Hints TCPV Mixing-dep. DCPV Direct EWPenguin WSH, Nagashima, Soddu, PRL’05 t’ non decoupled WSH, Nagashima, Soddu PRD76, 016004 (2007) Boxes CPV ? sin2FBs ~ -0.5–-0.7 SM-like in SM4

  48. LHCb : 0.5 fb-1 (2008 ?) • s(sin2FBs) ≃ 0.04 • ATLAS : 2.5 fb-1 (2008 ?) • s(sin2FBs) ≃ 0.16 • CMS ? $ Tevatron could get lucky ifsin2FBslargeNew Physics ! FBsProspect (short term) Bs J/ analogous toBdJ/KS VV Angular & Vertex Resolved Analysis to disentangle CP +/- components • CDF/DØ: 8 fb-1 projected • s(sin2FBs) ≃ 0.2 (?)/exp • similar €LHCb the winner if ~ SM sin2FBs ~ -0.04in SM But 2009 looks interesting ! Could Tevatron run beyond 2009 ? Nakada @ fLHC 3/07

  49. Large CPV in Bs Mixing Added 4/2008 WSH, Nagashima, Soddu, PRD’07 SM (high) rsb DAKp, DS CDF2srange Can Large CPV in Bs Mixing Be Measured @ Tevatron ? Sign Predicted ! Sure thing by LHCb ca. 2009+ sin2FBs ~ -0.5 --0.7 ? Despite DmBs, B(bsll) SM-like WSH, Nagashima, Soddu, PRL’05

More Related