Lighting Up Collider Searches for Electroweak States

Despite appearing in many extensions of the Standard Model, uncolored electroweak particles face limited collider search prospects. For nearly degenerate electroweak multiplets where the lightest state is electrically neutral, searches typically rely on pair production of the new states in association with visible radiation, e.g. the mono-X final state. We show that for such new particles, considering final state photon radiation can provide increased sensitivity. The additional kinematical information provided by including final state electromagnetic radiation more than compensates for the reduced statistics.
Leinweber Center for Theoretical Physics,
Oct 27, 2016, 12:39 PM