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1 Heavy Quark Phenomenology August 17, 2003 ICHEP2004, Beijing B → K S CP Polarization B → K S CP / K * Polarization/Collider Implications
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August 17, ICHEP2004George W.S. Hou (NTU) 2 Outline Comment on BNV in Decay Intro: HQ & NP b s Phenomena is Current Frontier for NP K S CPV Light and K S CPV : PRL Highlights Model Upshot / PV,PP Numerics / K S CPV / B S Polarization K * Polarization : Heuristic/Drastic Model SM; NP — CPV, TV Collider Search for Light : Tevatron! Conclusion Based on WSH, M. Nagashima, A. Soddu, hep-ph/0404002 C.K. Chua, WSH, M. Nagashima, PRL92, 201803 (2004) WSH and M. Nagashima, hep-ph/0408007 K. Cheung and WSH, hep-ph/0404041 (to appear PRD)
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August 17, ICHEP2004George W.S. Hou (NTU) 3 Comment on B#V in Decay ARGUS 1992 CLEO 1999 ? 2004? Marciano, Nucl.Phys.Proc.Suppl. ’95 Contrary to our hep-ph Likewise for + +
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August 17, ICHEP2004George W.S. Hou (NTU) 4 I. Introduction: HQ & NP b s Phenomena is Current Frontier for NP CP Phase sin2 B d 0.73 Agree with CKM Fit but B K / Modes ? Is sin2 B d K s Opposite Sign to sin2 B d !? Polarization ? Other b s Penguins ? K * Polarization ? EWP: Could NP emerge in b s ℓ + ℓ − ? m B s “Just Around the Corner ” but if sin2 B s ≠ 0 NP b s L ? Wrong Helicity Component? Test via B 0 K S Mixing-dep CPV ( K S tagging) ≠ 0 NP or B s [or Polarization]
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August 17, ICHEP2004George W.S. Hou (NTU) 5 K S CPV II. Light and K S CPV PRL Highlights 60 ° - 70 ° NP CPV phase ~ 60 ° - 70 ° ~ 200 GeV ~ 500 GeV Collider Direct Search (IV) Flavor Factory but need to disentangle hadronic effect Two Particle System Clean Modes Model Upshot
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August 17, ICHEP2004George W.S. Hou (NTU) 6 If S K s < 0 Large Large Effective s-b Mixing New New CPV Phase Right-handed Right-handed Interaction Large,NewPhysics, Large, New Physics, b → s CPV Effect [ to get sin 2 1eff (K S 0 ) ~ sin 2 1 ] [Belle/BaBar Update...] Model: a Light Strange-beauty Squark Large Large Eff. s-b Mixing New 1 New CPV Phase Independently Motivated
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August 17, ICHEP2004George W.S. Hou (NTU) 7 R.H. Flavor Mass/Mixing Hierarchy & R.H. Flavor Sector Motivation: Abelian Flavor Symmetry Nir-Seiberg, PLB’93; Leurer-Nir-Seiberg, NPB’94 Commuting Charges mass V CKM no r.h. force Ansatz
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August 17, ICHEP2004George W.S. Hou (NTU) 8 R.H. Flavor Mass/Mixing Hierarchy & R.H. Flavor Sector Motivation: Abelian Flavor Symmetry Nir-Seiberg, PLB’93; Leurer-Nir-Seiberg, NPB’94 Chua-WSH, PRL’01: Because of FCNC, Need 4 Texture Zeros (decouple s flavor) Arhrib-Chua-WSH ’01: Decouple d flavor Commuting Charges Ansatz Alternative Picture: Chang, Masiero, Murayama GUT s-b Focus: s-b no r.h. force Prominent r.-h. elements
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August 17, ICHEP2004George W.S. Hou (NTU) 9 Focus on 200 GeV Level Splitting by Large Mixing Drive One State Light 1 CP Phase strange-beauty squark
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August 17, ICHEP2004George W.S. Hou (NTU) 10 A Little Note on Formalism … Besides O 1,2 Tree O 3-6 Strong Penguin O 7-10 EM/EW Penguin also O 11,12 /g Dipole Matrix Elements evaluated via Naïve Factorization
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August 17, ICHEP2004George W.S. Hou (NTU) 11 Arhrib-Chua-WSH, PRD’01 B K s Rate b s (and B K s ) Rate Constraint Survive b s Constraint !! K s Rate “Sees Red” Combine b s and B K s Combine b s and B K s → ~ /2, 3 /2 ? → ~ /2, 3 /2 ? 1, 0.5 TeV 2, 0.5 1, 0.8 TeV 2, 0.8 [ More Conservative ] : LR Chiral Enhancement
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August 17, ICHEP2004George W.S. Hou (NTU) 12 m ES S ’K s Simpler (vs S ’K s ) S K s < 0, S K s ~ S K s Possible S K s S K s < 0 prefers lower -plane S K s S ’K s S K s , S ’K s ~ sin2 B d as well! Lower gluino mass S K s Lower gluino mass lowers S K s Prefer to keep gluino mass above 500 GeV (L.E. Constraints) >> Hadronic Parameters << CP phase enters B → K s via Lower q 2, and/or larger S K s Larger | S K s | Could ~ /2 be it? S ’K s Anticorrel. noticed first by Khalil & Kou ’03 for S ’K s [Murayama et al. ’03] 0.5 TeV Preferred : Anticorrelated
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August 17, ICHEP2004George W.S. Hou (NTU) 13 Amplitudes V ∓ A S K s vs S K s S ’K s Reason why Opposite Trend in S K s vs S K s , S ’K s hadronicuncertainty Right-handed interactions
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August 17, ICHEP2004George W.S. Hou (NTU) 14 In SM, b s L b s L Strength of Mixing-dep. CPV R Test R component ( A twood, G ronau, S oni, 1997 ) ( A twood, G ronau, S oni, 1997 ) S K * 0 ( K s ) nowPromising S K * 0 ( K s ) now Promising B s In contrast B s B s probably rely on B s R Can also test R comp. via Polarization in b (Mannel, Recksiegel, 1997) (Mannel, Recksiegel, 1997) Wrong Helicity Photon in b s R Implication : Wrong Helicity Photon in b s R Free of hadronic uncertainty Crisp
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August 17, ICHEP2004George W.S. Hou (NTU) 15 Lighter gluino ~ 500 GeV Needed m B s > 70 ps -1 - m B s > 70 ps -1 Tough ! sin2 B s ~ 0 - 1 - sin2 B s ~ 0 - 1 Tough ? Would’ve preferred [Arhib, Chua, WSH 01] S K s < 0 heavier gluino but for … S K s < 0 LHCb can still measure! B s CPV in untagged B s also 100 GeV100 GeV ? ~ 200 GeV case Direct Detection ! Except, Easier Direct Detection ! m B s, sin2 B s Clean Measure: m B s, sin2 B s Take ~ /2 as example Tough (!?) 1, 0.5 TeV 2, 0.5 1, 0.8 TeV 2, 0.8 Details: WSH and M. Nagashima, hep-ph/0404001 to appear in PRD
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August 17, ICHEP2004George W.S. Hou (NTU) 16 Polarization Puzzle III. K * Polarization Puzzle PRL Large,NewPhysics, Large, New Physics, CPC b → s Effect Needed ?
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August 17, ICHEP2004George W.S. Hou (NTU) 17 Heuristic/Drastic Model On-shell b s g: g is Transverse b s ~ 3 x 10 − 4 b s g ~ few x 10 − 3 B K* ~ 4 x 10 − 5 B K T * T ~ 5 x 10 − 6 10% 0.1% ? Complicated Color Structure min. is “gg” b x x Simple String Fragmentation Resonances
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August 17, ICHEP2004George W.S. Hou (NTU) 18 Ansatz ad hoc term
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August 17, ICHEP2004George W.S. Hou (NTU) 19 SM and NP “Solutions”: Prediction for K* SM NP ( ) absence for K*
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August 17, ICHEP2004George W.S. Hou (NTU) 20 CP and T Violation in Polarization States
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August 17, ICHEP2004George W.S. Hou (NTU) 21 w/ Kingman Cheung, hep-ph/0404041 to appear PRD ~ 200 GeV ~ 500 GeV LSP ? Tevatron Study IV. Collider Search for Light
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August 17, ICHEP2004George W.S. Hou (NTU) 22 Standard b squark limit diluted by dual s-b flavor of
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August 17, ICHEP2004George W.S. Hou (NTU) 23 Cross Sections at Tevatron ~ 0.1-1 pb ≲ 0.01 pb A few hundred events at few fb − 1 Dominant
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August 17, ICHEP2004George W.S. Hou (NTU) 24 Detection Basically, just a light “b”-squark in Production so, Discovery not a problem. Question is Decay: bino LSP or gravitino Can be Stable? (LSP) In principle Heavy MIPs Anyway, need Good b-tagging ! [s-tagging?] sin 2 is b fraction
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August 17, ICHEP2004George W.S. Hou (NTU) 25 standard sbeauty reference 1 Discovery (> 10 evts) up to 300 GeV w/ 2 fb − 1 & sin 2 m >0.5 Single vs double b-tag contain info on sin m b-tag cross section: check consistency vs mass
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August 17, ICHEP2004George W.S. Hou (NTU) 26 Conclusion S K s S K s S ’K s May S K s, S K s , S ’K s Data May Call for s-bR.-h. - Large s-b Mixing, w/ New CPV Phase & R.-h. Interaction Polarization Puzzle K * Polarization Puzzle may call for Drastic Remedy Flavor-mixed A Light Flavor-mixed Squark? Independtly Well Motivated (Flavor & SUSY) Survive b s (!) S K s ≲ 0 S K s , S ’K s ~ S K s Can Account for S K s ≲ 0, but S K s , S ’K s ~ S K s m B s sin2 B s m B s, sin2 B s May Become Difficult S K s nowPromising, and Clean S K s now Promising, and Clean Search at Tevatron (and beyond) Profitable [offerred]
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