### Seminar Details:

Title: | The hidden geometry of particle collisions |
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Location: | Oxford |

Speaker: | Thaler, Jesse |

Organiser: | Sarkar, Subir |

Date: | 2021-02-25 16:00:00 |

Link: | www2.physics.ox.ac.uk |

Join Link: | https://zoom.us/j/99110556925 |

Join Description: | Zoom |

### Seminar Description:

In this talk, I explain how various concepts and techniques in quantum field theory and collider physics can be naturally translated into a new geometric language. Using the energy mover's distance, which quantifies the minimal amount of "work" required to rearrange one event into another, we can define a distance between pairs of collider events. This distance can then be used to triangulate the "space" of collider events and rigorously define various geometric objects. Many well-known collider observables, jet algorithms, and pileup mitigation schemes have a simple geometric interpretation, as does the important concept of infrared and collinear safety. Intriguingly, these ideas can be lifted from a distance between events into a distance between theories, with potential relevance for visualizing and interpreting data from the LHC.