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Of Particular Significance

Conversations About Science with Theoretical Physicist Matt Strassler

  • About
    • About Me
      • A New Career Phase
    • About This Site and How to Use It
  • New? Start Here
  • Articles
    • Large Hadron Collider News
      • Two-Photons: Data and Theory Disagree
      • Hey Where’d My Higgs Go?
      • Searches for New Phenomena (as of 9/2011)
        • Searches Aimed at Supersymmetry
          • Seeking Photons/Zs and Something Undetectable
          • Seeking New Particles with Long Lifetimes
      • Gangbusters!
      • A Historic Day? Or Just an Important One?
      • Why so quiet at LHC?
      • Multi-Lepton Events: A Good Place to Look for New Physics
      • Triggering: Advances in 2012
        • Data Parking at CMS
      • Higgs Search: ATLAS and CMS Summer Data Combined
      • Old Pages (Of Historical Interest)
        • The December 2011 Higgs Update
        • The July 2011 Higgs Hints
      • What do current LHC results (mid-August 2011) imply about supersymmetry?
    • Relativity, Space, Astronomy and Cosmology
      • Black Holes
        • Black Hole Information Paradox: An Introduction
      • Why Do Astronauts Float?
        • How Strong Is Gravity at the Space Station?
      • The First Principle of Relativity
      • Dark Matter
        • Current Hints of Dark Matter (4/13)
        • Seeing Signs of Dark Matter Annihilation
        • Searching for Dark Matter at the LHC
      • Parallax: Seeing in Depth
      • Transit of Venus and the Distance to the Sun
      • Big Bang, Classic Confusions
      • Reflections on Beauty in Motion
      • History of the Universe
        • Big Bang: Expansion, NOT Explosion
        • Some Definitions for Cosmology
        • Before Inflation
        • Inflation
          • Dust Thou Art, BICEP2
        • Hot Big Bang
    • Thoughts on the Scientific Process
      • Scientific Scepticism Isn’t Just Politics
      • Why is the Tevatron So Busy with Hints of New Physics?
    • Large Hadron Collider FAQ
      • The Trigger: Discarding All But the Gold
        • Trigger Failure, and Repair, at the LHC
      • Introduction to the LHC
      • Photos Of The LHC
      • What’s a Hadron?
      • What’s a Proton, Anyway?
        • Proton Collisions Vs. Quark/Gluon/Antiquark Mini-Collisions
        • Checking What’s Inside a Proton
      • How We Learn What Happened in a Proton-Proton Collision
      • Some Technical Concepts
        • What are anti-particles?
        • Fermions and Bosons
        • Invariant Mass
        • GeV and TeV
    • The Higgs Particle
      • Taking Stock of the “Higgs” (Jan. 2013)
        • 1. Is it a Higgs?
        • 2. Perhaps Composite?
        • 3. A Higgs of Simplest Type?
        • 4. More Than One Higgs?
        • 5. Supersymmetry?
        • 6. Surprises?
      • Why the Higgs Particle Matters
        • Why the Higgs Particle Matters (Old Version)
      • Non-Standard Decays of the Observed Higgs Particle
        • Higgs Decays to Unknown Spin-Zero Particles
        • Higgs Decay to Unknown Spin-One Particles
      • The Higgs FAQ 2.0
      • The Old Higgs FAQ
        • The Higgs FAQ 1.0
      • Discovery of the Higgs
        • Higgs Discovery: Personal Reflections
        • Higgs Discovery: The Data
        • Higgs Discovery: Skill and A Little Luck
        • Higgs Discovery: Is it a Higgs?
        • Higgs Discovery: Is it a Simplest Higgs?
      • Why is it Hard to Find the Higgs Particle?
        • A Lightweight Standard Model Higgs Particle
      • Holiday Higgs Hints: Confidence-Inspiring or Not?
      • How The Higgs Field Works
      • Why The Hints of Higgs Currently Rest on Uncertain Ground
      • Implications of Higgs Searches (as of 9/2011)
      • The Standard Model Higgs
        • Lightweight Higgs: A `Sensitive Creature’
          • A Quantitative Addendum to the Sensitive Creature
            • Non-SM h Decays
              • Table of Decays
          • Decay to Unusual Jets
        • Production of the Standard Model Higgs Particle
        • Decays of the Standard Model Higgs
        • Seeking and Studying the Standard Model Higgs Particle
    • Particle Physics Basics
      • Virtual Particles: What are they?
      • Mass, Energy, Matter, Etc.
        • Matter and Energy: A False Dichotomy
        • Mass and Energy
          • How Did Einstein Do It?
        • More on Mass
          • The Two Definitions of “Mass”, And Why I Use Only One
        • The Energy That Holds Things Together
          • Neutron Stability in Atomic Nuclei
      • Why Do Particles Decay?
        • Most Particles Decay — But Why?
        • Most Particles Decay — Yet Some Don’t!
      • Particle/Anti-Particle Annihilation
      • The Structure of Matter
        • The Molecular Structure of Matter
        • Electrons: On the Outskirts of Atoms
        • Protons and Neutrons: The Massive Pandemonium in Matter
        • The Nuclei of Atoms: At the Heart of Matter
          • What Holds Nuclei Together?
        • Atoms: Building Blocks of Molecules
          • Isotopes: Variations on an Atom
          • Atoms of an Isotope Are Identical, Literally
          • Atoms: Their Inner Workings
      • C, P, T (And Their Combinations)
      • The Known (Apparently-) Elementary Particles
        • The Known Particles — If The Higgs Field Were Zero
        • Jets: The Manifestation of Quarks and Gluons
          • B-tagging: Identifying Jets from Bottom Quarks
        • Tau Leptons
      • Quantum Fluctuations and Their Energy
      • Particle Physics: Why do it? And why do it *that* way?
      • Tunneling: A Quantum Process
      • Fields and Their Particles: With Math
        • 8. How Particles and Fields Interact (an introduction)
        • 3. Waves (Classical Form)
        • 4. Waves (Classical Equation of Motion)
          • 4a. Waves (The Quick Calculation)
        • 5. Waves (Quantum)
        • 6. Fields
          • 6a. Chicken and Egg; Matter and Field
        • 1. Ball on a Spring (Classical)
          • 1a. Resonance
        • 7. Particles Are Quanta
          • 7a. How Bosons and Fermions Differ
        • 2. Ball on a Spring (Quantum)
      • Neutrinos
        • Making Neutrino Beams
        • Neutrino Types and Neutrino Oscillations
          • Velocity Differences of Neutrinos
        • Neutrinos Faster Than Light?
          • OPERA: The First Few Days
            • OPERA’s Paper: My Initial Reaction
            • OPERA’s Presentation: My Initial Comments
          • OPERA: Some Arguments Against
            • Cohen-Glashow: OPERA is Self-Contradictory
            • OPERA: Another Speed Bump
            • OPERA vs ICARUS
            • Supernovas and Neutrino Speeds
          • OPERA: Additional Supporting Info
          • OPERA: What Went Wrong
            • How LVD Helped Solve OPERA’s Mystery
          • OPERA: Comparing the Two Versions
        • How One Detects Neutrinos
          • IceCube: A Giant Frozen Neutrino Catcher
      • The Known Forces of Nature
        • The Strengths of the Known Forces
      • Theories and Vacua
      • The Hierarchy Problem
        • Naturalness and the Standard Model
          • How to Add 2 Curves
      • Cerenkov Radiation
      • How the Higgs Field Works (with math)
        • 1. The Basic Idea
          • 1. The Basic Idea (1st version)
        • 2. Why the Higgs Field is Non-Zero on Average
        • 4. Why the Higgs Field is Necessary
        • 3. How the Higgs Particle Arises
    • Tevatron News
      • Apparent Unexpected Asymmetries in the Production of Quarks
      • A Rare and Interesting Decay of a “B meson” – update 2
    • Some Speculative Theoretical Ideas for the LHC
      • Extra Dimensions
        • How to Look for Signs of Extra Dimensions
          • Kaluza-Klein Partners — Why? Step 1
          • Kaluza-Klein Partners — Why? Step 2
          • How Big Could an Extra Dimension Be?
          • Extra Dimensions & Newton’s Gravity
        • Extra Dimensions – How to Think About Them
          • Worlds of 1 Spatial Dimension
          • Dimensions of Physical Space
          • Worlds of 2 Spatial Dimensions
          • What is an “Extra” Dimension? Some Examples
      • Supersymmetry
        • Where Stands Supersymmetry (as of 4/2012)?
        • Where Stands Supersymmetry (as of 12/2013)
        • Supersymmetry and Multi-Lepton Events
        • Supersymmetry — What Is It?
        • How to Look for Supersymmetry at the LHC
          • When The Standard Assumptions About Supersymmetry are Relaxed
            • Test Page
  • Movie Clips
  • Xotica
    • Sunrise
      • Sunrise (older version)
    • The Grand Si11iness of 11/11/11 11:11:11
    • Hurriquake 2011: What are the Chances?
  • Technical Zone
    • Test Page
    • The Triplet & the W Mass
      • 4. Toward the Standard Model
      • 2. Particles and the Generation of Mass
      • 3. An Improved Cartoon of the Triplet Model
      • 5. The Massless Photon
      • 1. The Vacuum of a Field Theory
      • 6. The Standard Model Completed

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Depiction of proton collisions at the Large Hadron Collider. Copyright CERN.

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A decay of a Higgs boson, as reconstructed by the CMS experiment at the LHC

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