4G Dervish George W.S. Hou (NTU) 10/23/ the Fourth Generation Thoughts and Directions October 23, 2011, BOUN on diaz site !!! at

4G Dervish George W.S. Hou (NTU) 10/23/ I. Intro: Capri ’ 08 ; 1 st BSM3 & 4 Statements ; 2 nd BSM3 ; Summer ’ 11 II. From Hints to Measurements : In direct/ Direct B s → J /    / B s →  / B → K*  ║ m t ; BR (t → b W*) III. Enhancing Small Numbers nEDM4 ; BAU4 IV. Breaking the Unitarity “ Bound ” Yukawa-bound Ultra Heavy “ Mesons ” — Relativ. Bound State Issues; Lattice ; [“ Bootstrap ” Gap Equation V. Conclusion Outline

CPV George W.S. Hou (NTU) NCU, Oct 6, I. Intro arXiv: [hep-ph]

4G Dervish George W.S. Hou (NTU) 10/23/ ~ 133 citations ~ 133 citations today

4G Dervish George W.S. Hou (NTU) 10/23/ Summarized this morning.

Fourth Generation George W.S. Hou (NTU) TOP2010, Bruges, sin 2  B s ~   0.7 WSH, Nagashima, Soddu, PRD’07 (already in 05) sin 2  B s ~  0.33 WSH, Ma, arXiv: [hep-ph] 4 th generation “prediction” still robust, but needs LHCb to verify. Also, Soni et al., arXiv: [hep-ph] Buras et al. arXiv: [hep-ph] Lenz et al., arXiv: [hep-ph] curios  1.2  too sin 2  B s ≡ sin  s ≡  sin 2  s

Sum 2-B3GSM George W.S. Hou (NTU) 10/23/ Gerhard Raven B Physics Results from the LHC Practically All Flavor/CPV Hints are “Gone” !! Practically All Flavor/CPV Hints are “Gone” !! LP11

4G Dervish George W.S. Hou (NTU) 10/23/ II. From Hints to Measurements: Indirect/Direct Measuring CKM4 LHC t, t ’, t ’

4G Dervish George W.S. Hou (NTU) 10/23/ Andrei  s   [sin   s ~  0.74] Andrei: Do you like the 1 fb  number I gave, George? George: Well, perhaps  0.3  0.1 better

4G Dervish George W.S. Hou (NTU) 10/23/  2.4 x 10  9 reachable w/ 1 fb  ? CERN RRB April 2011 Add ATLAS/CMS !

4G Dervish George W.S. Hou (NTU) 10/23/ Gerhard Raven B Physics Results from the LHC LP11 Getting Interesting: 4G could enhance B s →  by ~ 2 ! Getting Interesting: 4G could enhance B s →  by ~ 2 !

4G Dervish George W.S. Hou (NTU) 10/23/ Gerhard Raven B Physics Results from the LHC LP11 I was devasted by this, and mildly depressed in September … I was devasted by this, and mildly depressed in September …

4G Dervish George W.S. Hou (NTU) 10/23/ Measuring CKM4 LHC t, t ’, t ’ BsBs = SM3 Trick: Take Ratio of B s →     and  m s Remove dependence, only left. SM3

4G Dervish George W.S. Hou (NTU) 10/23/ Measuring CKM4 LHC t, t ’, t ’ BsBs Could by smaller than SM3 Anticipating 2012 “2”“2” SM3-like

4G Dervish George W.S. Hou (NTU) 10/23/ Measurement Anticipating 2012 “2”“2” SM3-like Smaller than SM3 Intersect at ~ SM3 value

4G Dervish George W.S. Hou (NTU) 10/23/ Measurement A Third Measureable: A FB ~ SM3 ! Contours of x Sample points: blue; purple; red; green. x Allowed for m t ’ = 550 GeV

4G Dervish George W.S. Hou (NTU) 10/23/ Measurement Sample points: blue; purple; red; green. Allowed for m t ’ = 550 GeV The refined measurements of ˙ sin 2  B s ˙ B (B s →     ) ˙ A FB (B 0 → K * 0     ) together with m t ’, will pinpoint the value of Take red point to illustrate the Meaning Meaning.

4G Dervish George W.S. Hou (NTU) 10/23/ b → s → b → d t, t ’, t ’ Belle/BaBar Measurement KM Nobel Measurement of Determine (knowing t ’ mass) ~ Triangle Relevant for BAU?

4G Dervish George W.S. Hou (NTU) 10/23/ but TCPV hint is now diminished … t, b phase space suppressed vs CKM suppressed BR( b → t W* ) determines so then Y. Chao et al., PRD 11 virtual Threshold enhanced determination of CKM4

4G Dervish George W.S. Hou (NTU) 10/23/ III. Enhancing Small Numbers nEDM4 and BAU4

4G Dervish George W.S. Hou (NTU) 10/23/ New neutron EDM expts underway … » for BAU « nEDM4 Borderline even if hadronic enhanced by 10 3

4G Dervish George W.S. Hou (NTU) 10/23/ Pospelov & Ritz, PRD’01 Hamzaoui & Pospelov, PLB’95 Hamzaoui & Pospelov, PRD’96 Hou & Ma, PRD’10 nEDM4 ~ 10  31 e cm effective 3-loop estimate, picking out large momenta in loop w/ Fanrong Xu & Junji Hisanp, to appear PRD 11 nEDM is a slow (safe) track for 4G nEDM4 estimate

4G Dervish George W.S. Hou (NTU) 10/23/ BAU4 estimate Farrar & Shaposhnikov claimed, in 1993, that SM3 could generate BAU by CP violating scattering of quasi-particles (thermal excitations of q & anti-q) with bubbles of the Higgs condensate This was shot down by Gavela, Hernández, Orloff and Pène in 1994, who pointed out FS neglected the damping length in the plasma (mainly QCD) Huet & Sather gave in PRD’95 a lucid account, finding conservatively We find, following the steps of HS, bubble wall Problem: Large Yukawa coupling. w/ Masaya Kohda & Yoshio Kikukawa (prelim.) seem sufficient ! Too small !

4G Dervish George W.S. Hou (NTU) 10/23/ IV. Breaking the Unitarity “Bound” Yukawa-bound Ultra-heavy Mesons; pheno? Lattice future

4G Dervish George W.S. Hou (NTU) 10/23/ LP11 b' LHC b' LHC same sign dileptons Partial Wave Unitarity Bound b' (→ W   t) b' _ Will cross UB w/ data Nonperturbative Nonperturbative PLB 11

4G Dervish George W.S. Hou (NTU) 10/23/ Heavy Isospin Bethe-Salpeter approach to new Heavy Isospin Jain et al., PRD 92; 94 semi-degenerate cov. ±± + +     Isosinglet 1  lightest ↬ Collapse ↬ Collapse large m Q for large m Q subtract s-channel  becomes most attractive! but s-channel is repulsive ! Ishiwata & Wise, PRD 11 relativistic correction study breaks down ?

4G Dervish George W.S. Hou (NTU) 10/23/ Ishiwata and Wise, PRD 11 Fourth generation bound states relativistic expansion study breaks down ? My interpretation: QCD-bound for GeV scale binding energy Sudden turn-on of Large Yukawa Coupling ⇒ Sudden drop in radius jump in binding energy Rel. Expan. fails just when it turns interesting.    accidental degeneracy less bound

4G Dervish George W.S. Hou (NTU) 10/23/ Heavy Isospin Bethe-Salpeter approach to new Heavy Isospin Jain et al., PRD 92; 94 semi-degenerate cov. ±± + +     Isosinglet 1  lightest ↬ Collapse ↬ Collapse large m Q for large m Q subtract s-channel  becomes most attractive! but s-channel is repulsive ! Ishiwata & Wise, PRD 11 relativistic correction study breaks down ?

4G Dervish George W.S. Hou (NTU) 10/23/ : “usual” :  Goes down fast w/ m Q Tight, Relativistic Bound State (large q!) “Negative Energy Potential” Matters! What does collapse mean? What about s-channel subtr.? Enkhbat, WSH, Yokoya, to appear PRD deep boundstate production/decay … vanish for zero rel. motion Yukawa /  5

4G Dervish George W.S. Hou (NTU) 10/23/ no gg production mQ = 500 – 700 GeV; binding  to  0 GeV 1 to 1.4 TeV

4G Dervish George W.S. Hou (NTU) 10/23/ Decay narrow

4G Dervish George W.S. Hou (NTU) 10/23/ Results dijet

4G Dervish George W.S. Hou (NTU) 10/23/ from the Abstract Enkhbat, WSH, Yokoya, to appear PRD

4G Dervish George W.S. Hou (NTU) 10/23/ Lattice: only known nonpert. approach Last name: Lin First name: C.-J. David Affiliation: National Chiao-Tung University address: Title: Study of the Higgs-Yukawa Theory at the Strong-Yukawa Regime Authors: John Bulava, Philipp Gerhold, George W.-S. Hou, Karl Jansen, C.-J. David Lin, Kei-Ichi Nagai, Attila Nagy, Kenji Ogawa, Brian Smigielski Type: Parallel Session: Applications beyond QCD Abstract: We present an on-going project on the Higgs-Yukawa theory in the regime of large bare Yukawa coupling. We use the overlap fermion and the pHMC algorithm in this work. Our preliminary study shows that there exists a symmetric phase (vanishing scalar vacuum expectation value) in this regime. We also comment on the investigation of the spectrum. talk at Lattice 2011 Remote Talk tomorrow

4G Dervish George W.S. Hou (NTU) 10/23/ V. Conclusion Measure CKM relevant (?) for BAU at LHC [ measure also nEDM4 safe; BAU4 “possible” Unitarity Bound Unitarity Bound approached with LHC Data Need Lattice Study/Understanding to Go Beyond BR( t → b W* ) Ultra Relativistic, Strong/Nonpert. BoundStates !? Transition ~ Moriond / Summer Conf We await the light SM Higgs verdict