The Era of Discovery at the Large Hadron Collider

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The Era of Discovery at the Large Hadron Collider

• High Energy Experimental and Theoretical Particle
  Physics at Rutgers

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CERN Large Hadron Collider
Proton-Proton Collisions 14 TeV
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Electroweak Scale
Standard Model -
SU(2) U(1) Gauge Symmetries Quark and Lepton
Masses
mW,Z g v
Spontaneously Broken
m? h v
Higgs Sector

• h H i v Scalar Order Parameter
• v 174 GeV
• No other Positive Information

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Electroweak Scale
Standard Model -
SU(2) U(1) Gauge Symmetries Quark and Lepton
Masses
mW,Z g v
Spontaneously Broken
m? h v
Higgs Sector

• h H i v Scalar Order Parameter
• v 174 GeV
• No other Positive Information

Excitations Higgs Boson
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Physics Associated with the Higgs Sector ??

• Supersymmetry (Fermionic Extra Dimensions)
• Technicolor
• Warped Extra Dimensions
• Dark Matter

The Era of Discovery
How will we Discern New Physics in the Data ?
What Signatures will be Important ? How will we
Unravel the New Physics and Discover
the Physics Associated with
Electroweak Symmetry Breaking ?
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• Hadron Collider

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Invariant Kinematic Correlations

• Uniform M2 on Two Body Resonances
• Consistent with Intermediate Scalar
• Edges
• Three Body Tree (Only feature in
  . D1
  Histogram)
• Coincide with Endpoint of Resonant
  . Two Body Correlation
• - Arise from Missing Lepton
• - Anything Else Contributing to
  . Edge is massless
• Relative Density of Two Body Resonances,
  . Resonant Two Body Correlation, and
  . Edge Contrast
• - Br (? ? lll) / Br(? ? llX)

Dalitz (symmetrized)
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m132
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m122
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Invariant Kinematic Correlations

• Three Body Resonant Trees
• 310 GeV mlll 330 GeV
• Further Enhances
  . S/BCombinatoric Contrast

m123
m132
m122
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Kinematic Correlations
Nl 4

• No Kinematic Correlation
• - Consistent with Arising from
  . Different Parent Particle
• m14 m and m23 ? m or
• m14 ? m and m23 m
• - Single Resonant Two Body Decay
• m14 m23 m
• - If Density at Intersection \geq 2
  . Some Events with (At least)
  . Two Resonant Two Body Decays
• - Density at Intersection gives Fraction

m14
m23
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Isolating Top Quarks
Top Quarks Couple Strongly to Higgs Condensate
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Discerning SUSY in Cascade Decay Correlations
Dilepton Invariant Mass Distributions
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High Energy Particle Physics at Rutgers LHC
Experiment Theory
Tom Banks Matt Strassler Scott Thomas .. ..
Eva Halkiadakis Amit Lath Steve Schnetzer
Sunil Somalwar ..
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What will You Do in the Era of Discovery ?
This Could Be You !