enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Electron capture - Wikipedia

    en.wikipedia.org/wiki/Electron_capture

    The leading-order Feynman diagrams for electron capture decay. An electron interacts with an up quark in the nucleus via a W boson to create a down quark and electron neutrino. Two diagrams comprise the leading (second) order, though as a virtual particle, the type (and charge) of the W-boson is indistinguishable.

  3. List of Feynman diagrams - Wikipedia

    en.wikipedia.org/wiki/List_of_Feynman_diagrams

    In the Stückelberg–Feynman interpretation, pair annihilation is the same process as pair production: Møller scattering: electron-electron scattering Bhabha scattering: electron-positron scattering Penguin diagram: a quark changes flavor via a W or Z loop Tadpole diagram: One loop diagram with one external leg Self-interaction or oyster diagram

  4. Feynman diagram - Wikipedia

    en.wikipedia.org/wiki/Feynman_diagram

    Feynman diagram of electron/positron annihilation. The electron–positron annihilation interaction: e + + e − → 2γ. has a contribution from the second order Feynman diagram: In the initial state (at the bottom; early time) there is one electron (e −) and one positron (e +) and in the final state (at the top; late time) there are two ...

  5. Beta decay - Wikipedia

    en.wikipedia.org/wiki/Beta_decay

    The leading-order Feynman diagrams for electron capture decay. An electron interacts with an up quark in the nucleus via a W boson to create a down quark and electron neutrino. Two diagrams comprise the leading (second) order, though as a virtual particle, the type (and charge) of the W-boson is indistinguishable. In all cases where β +

  6. File:Electron-capture.svg - Wikipedia

    en.wikipedia.org/wiki/File:Electron-capture.svg

    English: The leading-order Feynman diagrams for electron capture. An electron interacts with a down quark via a mediating W-boson to produce an up quark and anti-neutrino. An electron interacts with a down quark via a mediating W-boson to produce an up quark and anti-neutrino.

  7. Weak interaction - Wikipedia

    en.wikipedia.org/wiki/Weak_interaction

    The Feynman diagram for beta-minus decay of a neutron (n = udd) into a proton (p = udu), electron (e −), and electron anti-neutrino ν e, via a charged vector boson (W −). In one type of charged current interaction, a charged lepton (such as an electron or a muon, having a charge of −1) can absorb a W +

  8. Quantum electrodynamics - Wikipedia

    en.wikipedia.org/wiki/Quantum_electrodynamics

    The basic rule is that if we have the probability amplitude for a given complex process involving more than one electron, then when we include (as we always must) the complementary Feynman diagram in which we exchange two electron events, the resulting amplitude is the reverse – the negative – of the first.

  9. File:Electron Capture Decay.svg - Wikipedia

    en.wikipedia.org/wiki/File:Electron_Capture...

    English: The Feynman diagram en for the electron capture en. The up quark en in the proton, capturing an electron en , decays into an down quark en to make a neutron, emitting an electron neutrino en .