Tuesday 23 July 2019 |

Events for day: Tuesday 11 September 2018 |

11:00 - 12:00 Particles Phenomenology Journal ClubSerendipity in dark photon searches School PARTICLES AND ACCELERATORS Based on "1801.04847[hep-ph]" Abstract:"Searches for dark photons provide serendipitous discovery potential for other types of vector particles. In this paper, authors develop a framework for recasting dark photon searches to obtain constraints on more general theories, which includes a data-driven method for determining hadronic decay rates." Larak Seminar Room ... 14:00 - 15:00 Weekly SeminarHEPCo Group Calorimetric Dark Matter Detection with Galactic Center Gas Clouds School PHYSICS Seminar Room Class D, Farmanieh Building ... 15:00 - 16:00 LectureSteiner Triple Systems with High Chromatic Index School MATHEMATICS A Steiner triple system is a set of triples (subsets of ${1,2,dots,n}$) such that every pair is in exactly one triple. A partial parallel class in a Steiner triple system is a subset of its triples that are pairwise disjoint. The chromatic index of a Steiner triple system is the smallest number of partial parallel classes into which its blocks can be partitioned. It has been conjectured that every Steiner triple system of order $v eq 7$ has chromatic index at most $({v+3})/{2}$ when $v equiv3 mod{6}$ and at most $({v+5})/{2}$ when $v equiv 1 mod{6}$. We construct a Steiner triple system of order $v$ with chromatic index at least ... |