The Particle at the End of the Universe: How the Hunt for the Higgs Boson Leads Us to the Edge of a New World

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The Particle at the End of the Universe: How the Hunt for the Higgs Boson Leads Us to the Edge of a New World Page 33

by Sean Carroll

dark matter

  and “axions,” 169

  detecting, 25, 64

  discovery of, 244–45

  and the early universe, 245–47

  Feynman diagram of, 251

  and gravity, 64, 143, 247–48

  and the Higgs discovery, 268

  and the Higgs portal, 249–52, 251

  and PAMELA experiment, 200–201

  and physics beyond the Standard Model, 17, 252–54

  and supersymmetry, 190, 261

  and WIMPs, 247–49

  data collection, 110–14. See also statistical analysis

  Dawson, Sally, 174

  decay of particles

  discovery of, 170

  and evidence for the Higgs boson, 95–96

  and field theory, 131–33

  Higgs decay modes, 54, 170–74, 171, 173, 184–88

  and neutrino emission, 46–48

  neutron decay, 46–47, 131–34, 230

  and particle detectors, 95–97

  de Hevesy, George, 209–10

  Democritus, 10, 279

  Deutsch, David, 126

  Dirac, Paul, 44

  Discover magazine, 181, 198–99

  Dorigo, Tommaso, 198

  down quarks

  and atomic structure, 10–11, 28

  charge of, 50, 294

  interaction with Higgs boson, 143

  and particle spin, 291

  and quark generations, 51

  and resting value of Higgs field, 146

  and weak interactions, 32, 158

  D Zero experiment, 199–200

  early universe, 245–47

  The Economist, 200

  Einstein, Albert

  and “aether” theory, 139

  and energy/mass equivalency, 34

  and energy/wavelength connection, 126–27

  and general relativity, 14

  and Lederman, 19

  “miraculous year,” 13

  and the photoelectric effect, 127, 164

  and quantum mechanics, 128

  and special relativity, 123

  and speed of light, 196, 197

  and theological implications of physics, 21, 22–23

  and vacuum energy, 221, 255

  Eisner, Hal, 135, 146

  electric charge. See charge of particles

  electricity, 14, 121, 213–14

  electromagnetic calorimeters, 107, 107–8, 109

  electromagnetic force

  and atomic structure, 42–43

  electromagnetic fields, 33, 120–22

  and infinite-answer problem, 229

  and local symmetries, 154

  and observable macroscopic forces, 31

  and particle charge, 29

  and particle detector findings, 104–5

  and particle spin, 291

  and quantum field theory, 33

  and superconductivity, 211

  and symmetry, 152, 213

  unification with weak force, 231

  electron neutrinos, 48–49, 159, 257, 291

  electrons

  and atomic structure, 10–11, 29, 41, 42–43

  and Higgs decay modes, 173

  interaction with Higgs boson, 143

  and linear accelerators, 66

  and mass, 60, 145

  and neutron decay, 133–34

  and particle detectors, 104, 108–10, 109

  and particle spin, 129, 285, 288, 291

  and resting value of Higgs field, 146

  and size of atoms, 145–46

  and solidity of matter, 28

  and supersymmetry, 257

  and symmetry, 149, 159

  and weak interactions, 159

  electron volt (eV) measure, 55, 59, 59

  electroweak phase transition, 161

  electroweak theory, 257–61

  electroweak unification, 232–34, 235

  elementary particles, 8–11, 27. See also specific particles

  elements, 10

  Ellis, John, 174, 183, 191

  energy/mass equivalency, 34, 57–61, 86, 142–44

  Englert, François, 183, 221–26, 228, 238–41

  entertainment industry, 204–8

  entropy, 267

  Epicurus, 279, 280

  Euclidean geometry, 124

  European Organization for Nuclear Research, 61

  European Physical Society Prize, 64

  Evans, Lyn

  and design of the LHC, 81–83, 241

  and explosion at the LHC, 76

  and inauguration of the LHC, 4

  and new collider proposals, 277

  and physics beyond the Standard Model, 18

  retirement, 90–91

  expansion of space, 246, 254–55

  experimentation vs. theory, 8, 192–93

  The Fabric of Reality (Deutsch), 126

  Faraday, Michael, 14, 121–22

  Fawell, Harris, 24

  Fermi, Enrico, 8, 47, 132, 155, 228–30

  Fermi National Accelerator Laboratory (Fermilab)

  competition with CERN, 65–69

  and Congressional hearings, 269

  D Zero experiment, 199–200

  maximum energies achieved, 86

  and predecessors of the LHC, 16

  and top quark discovery, 136–37

  fermions

  and antimatter, 43–44

  and atomic structure, 28–29

  and the Big Bang, 161

  and boson forces, 52

  and connection fields, 162

  described, 293–95, 294

  detection of, 41

  fermionic fields, 131–33, 217

  and Feynman diagrams, 167–68

  and Higgs decay modes, 173

  mass of, 143, 294

  and neutron decay, 132

  and particle spin, 158, 285–86, 290–94

  and quantum field theory, 33

  and string theory, 262

  and supersymmetry, 257–58, 259, 261

  Fermi telescope, 251–52

  Feynman, Richard, 101, 167, 213, 229, 237

  Feynman diagrams

  and dark matter, 251

  described, 167

  and Englert and Brout model, 223

  and gluon fusion to create Higgs, 166–67, 167–69, 168

  and Higgs decay modes, 173, 188

  and weak interactions, 229

  fields and field theory, 31–35, 118–20, 123–28, 220

  fine-structure constant, 252–53

  fixed-target experiments, 62

  “flavor” symmetries, 150

  force-carrying particles, 5, 11, 28–29, 131, 283. See also bosons

  Ford, Kent, 244

  Forester, James, 68

  fossil hunting, 94

  Franck, James, 209–10

  Franklin, Benjamin, 121, 271

  Freese, Katherine, 250

  Freund, Peter, 216

  Friedman, Jerome, 66

  From Eternity to Here (Carroll), 255, 267

  funding for physics research, 17–18, 69–73, 80–83, 269–70

  fuzziness of quantum mechanics, 34

  Gaillard, Mary K., 174

  Galileo, 156

  gamma rays, 251

  Gargamelle experiment, 162, 237

  gauge bosons

  and connection fields, 153

  and development of the Higgs model, 222–24, 231, 233, 236

  and electroweak unification, 233

  and particle spin, 286, 291

  and symmetry, 52, 160, 213

  gauge invariance, 151

  gauge symmetry

  and connection fields, 153–54

  and development of the Higgs model, 219–20, 222–23, 225, 227, 236, 239

  and superconductivity, 211, 212

  Geer, Steve, 180

  Gell-Mann, Murray, 50

  general relativity, 14, 123–24

  Gianotti, Fabiola

  and announcement of Higgs discovery, 164–65, 183–84

  and t
he arts, 277

  on data transmission system, 113

  and inauguration of the LHC, 4, 6

  and memo leaks, 203

  and OPERA experiment findings, 195–97

  and physics beyond the Standard Model, 18

  Gilbert, Walter, 220–21

  Ginzburg, Vitaly, 214–15

  Giudice, Gian, 90

  Glashow, Sheldon, 232–34, 236–37

  global positioning system (GPS), 14

  global symmetries, 151

  gluons

  and connection fields, 153

  and creation of Higgs bosons, 166–67, 167–69, 168

  evidence of, 64

  and Feynman diagrams, 168

  and Higgs decay modes, 171, 172

  masslessness of, 143

  and nuclear forces, 30

  and particle detectors, 96–97, 97–98, 103–4

  and particle spin, 53, 286

  and proton collisions, 102

  and quantum field theory, 33, 129

  and the Relativistic Heavy-Ion Collider (RHIC), 67–68

  and strong interactions, 156

  and supersymmetry, 259

  and virtual particles, 101

  The God Particle (Lederman and Teresi), 20

  “God Particle” term, 19, 37

  Goldstone, Jeff, 217, 220–25, 239, 241

  gravatinos, 286

  gravitons

  and connection fields, 153

  and force of gravity, 29

  masslessness of, 143

  and particle detector findings, 104–5

  and particle spin, 52, 53, 288

  and quantum field theory, 33, 130

  gravity

  and dark matter, 64, 143, 247–48

  and field theory, 117, 123–25

  gravitational fields, 33, 63–64, 118–20

  gravitational lensing, 143

  gravitational waves, 124–25

  and the hierarchy problem, 254

  particle associated with, 29

  and particle spin, 52, 286, 291

  and quantum field theory, 33, 130

  and quantum mechanics, 25, 29

  and the Standard Model, 26

  and superconductivity, 211

  and symmetry, 152, 154, 213

  and vacuum energy, 221

  See also quantum gravity

  Grazer, Brian, 204–5

  Great Pyramid of Giza, 106

  Greece, ancient, 7, 10, 279

  Greek Security Team, 113–14

  Green, Michael, 262

  Gross, David, 30

  Guinness Book of World Records, 67

  Gunion, John, 174

  Guralnik, Gerald, 183, 222, 225–28, 233–34, 238–41

  Haber, Howard, 174

  hackers, 113–14

  hadronic calorimeters, 107, 107–10, 109

  hadrons

  discovery of, 50–52, 56

  and Higgs decay modes, 172

  and nuclear forces, 30

  origin of term, 48

  and particle colliders, 63, 96, 103, 109

  types of, 294

  Hagen, Carl Richard, 183, 222, 225–28, 233–34, 238–41

  Hahnemann, Samuel, 39

  Han dynasty, 121

  hardening of electronics, 108

  Hawking, Stephen, 21, 211, 255

  Heisenberg, Werner, 155

  helicity of particles, 290–92

  Hellman, Hal, 55

  Hertz, Heinrich, 122, 271

  Heuer, Rolf, 3, 16

  Hewett, JoAnne, 1–3, 6, 14, 17–18, 70, 282

  hierarchy problem, 254, 255–56, 260–61, 265–66

  Higgs, Peter

  and announcement of Higgs discovery, 183, 185

  and development of the Higgs mechanism, 222–28, 239–41

  on “God Particle” term, 20

  and Higgs boson name, 11–12, 238

  and inauguration of the LHC, 5

  Sakurai Prize, 240

  Higgs bosons

  announcement of, 3–4, 6, 12, 183–85

  and connection fields, 153

  creation of, 166–67, 167–69, 168

  and dark matter, 248–49, 249–52, 251

  decay modes of, 16, 54, 170–74, 171, 173, 173, 184–88

  discovery of, 5–6, 78–79, 175, 181–85

  early indications of, 64

  and Feynman diagrams, 166–67, 167–69, 168, 173

  and field theory, 117–18

  and “God Particle” term, 19–20

  lifespan of, 170, 272

  and mass of particles, 5, 12, 27, 31–37, 35, 53–54, 58, 60, 142–46, 273

  and neutron decay, 132–33, 134

  origin of name, 5, 11–12

  and particle detectors, 96, 104

  and particle spin, 52–53, 53, 285, 286, 288

  prediction of, 224, 266–67, 282

  and the Standard Model, 9, 11–12

  summarized, 35–36

  and supersymmetry, 258, 259, 259–60

  and the weak force, 32

  and WIMPs, 248–49, 250, 252

  See also Higgs field

  Higgs field

  analogy for lay audience, 137–39

  and the Big Bang, 160–61

  and connection fields, 153

  described, 32–34

  and the Higgs boson, 117–18, 166–67, 167–69

  and mass of particles, 5, 12, 27, 31–37, 35, 53–54, 58, 60, 142–46, 273

  and matter-antimatter asymmetry, 268

  and particle spin, 290–92

  and relativity, 139, 273

  resting value of, 35, 139–42, 141, 146, 147–50, 253–54, 273

  summarized, 35–37

  and supersymmetry, 257, 259–60, 260–61

  and symmetry breaking, 52, 146, 147, 147–50, 156–60, 162, 273–74, 278, 292

  and vacuum energy, 256

  See also Higgs bosons

  The Higgs Hunter’s Guide (Gunion, Haber, Kane, and Dawson), 174

  Higgs mechanism

  as collaboration, 212

  developments leading to, 222, 224–26, 236

  and naming conventions, 237–39

  and symmetry breaking, 289

  and vacuum energy, 256

  and weak interaction theory, 163

  High Energy Physics (Hellman), 55

  Hindus, 10

  homeopathy, 39–41

  House of Wisdom (blog), 279

  Howard, Ron, 204–5

  Hulse, Russell, 124

  Hunt, Johnnie Bryan, 73

  ICARUS experiment, 196–97

  Illinois Mathematics and Science Academy, 19

  Imagine Entertainment, 204

  Incandela, Joe, 3–4, 6, 18, 79, 184, 186, 277

  The Infinity Puzzle (Close), 234

  information technology, 110–12, 112–14, 179–80, 201–2

  inner detectors, 107, 107, 109

  Insane Clown Posse, 115–17

  Institute for Advanced Study, 19, 155

  Institute for Theoretical Physics, 209–10

  interference patterns, 125

  International Conference on High Energy Physics (ICHEP), 3, 181, 203

  International Linear Collider (ILC) (proposed), 276–77

  International Space Station, 70

  Internet, 113, 274

  Intersecting Storage Rings (ISR), 61–62

  ions, 45

  iridium, 56

  Jago, Crispian, 39–41

  Janot, Patrick, 65

  Johnson Space Center, 70

  Jona-Lasinio, Giovanni, 217, 219

  Kaluza, Theodor, 263

  Kane, Gordon, 174, 255

  Kaplan, David, 206–8, 277

  Kendall, Henry, 66

  Kibble, Tom, 222, 225–28, 233–36, 238–41

  Klein, Abraham, 221

  Klein, Oskar, 263

  Krumhansl, James, 72

  Lamb, Willis, 50

  Lamont, Mike, 77–78

  Landau, Lev, 214–15r />
  Laplace, Pierre-Simon, 120, 123

  Large Electron-Positron Collider (LEP), 17, 62, 80, 82

  Large Hadron Collider (LHC)

  advances of, 56–57

  and black hole panic, 189–91

  blog coverage of startup, 199

  and cancellation of the SCC, 73

  competition with Tevatron, 65

  construction of, 81–83

  cost of, 65, 83, 90, 270, 276

  damage to, 75–77

  and dark matter, 252

  and decay of Higgs bosons, 54

  and discovery the Higgs, 15–16

  energies attained, 86–88, 181

  and energy/wavelength connection, 127

  and Evans’s retirement, 90–91

  impact on particle physics, 8–9

  inauguration of, 1–6

  magnet of, 75–77, 88–90

  mass of particles created by, 272

  operation of, 83–85

  and particle “pileup,” 102, 182, 185

  planning and design of, 80–81, 81–83

  and quench, 76

  recovery from breakdown, 77–79

  and statistical analysis, 180

  and string theory, 262

  and supersymmetry, 259

  “Large Hadron Rap,” 205–6

  Larry King radio show, 270

  Laser Interferometer Gravitational-Wave Observatory (LIGO), 124–25

  Laue, Max von, 209–10

  Lederman, Leon, 19–20, 25, 37, 48, 67

  Lee, Benjamin, 221, 237–38

  Lee, T. D., 155

  Legoland, 9

  Leibniz, Gottfried, 222

  Lemaître, Georges, 22

  leptons

  and atomic structure, 11

  described, 293

  generations of, 49, 295

  and Higgs decay modes, 171, 184–85, 187

  mass of, 53, 143

  and neutron decay, 133–34

  origin of term, 48

  and particle detectors, 96

  and particle spin, 286, 292

  and resting value of Higgs field, 146

  and the strong nuclear force, 41

  Leucippus, 279

  Lewis, Gilbert, 127

  LHCb experiment, 97

  LHCf experiment, 97

  lifespan of elementary particles, 94–95, 105–6, 170

  light, 125, 143

  linear accelerators, 66, 276

  liquid noble gas particle detectors, 250–51

  local symmetries, 151, 154–55, 211, 222, 289

  Lucas, George, 207

  Lucretius, 279

  Lykken, Joe, 79, 238–39

  magnets and magnetism

  and the electromagnetic field, 120–22

  and fields, 116–18

  Insane Clown Posse on, 116–17

  at the LHC, 75–77, 88–90

  and particle charges, 57

  and particle detectors, 99–100

  technological advances, 274

  See also electromagnetic force

  Maiani, Luciano, 65, 83

  Manhattan Project, 72, 269

  Mann, Michael, 205

  Mansfield, Edwin, 274

  mass

  and the Big Bang, 161

  and creation of Higgs bosons, 166–67

  and dark matter, 246

 

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