Events Daily

Wednesday, September 26, 2018

Astro Particle Group Mtg, Astro Particle Group Mtg
Event Type: Astroparticle Group Meet
Time: 12:15 PM - 2:00 PM
Location: 726 Broadway, 902, Lg Conf

Enhancing Long-lived particles searches at the LHC with precision timing information
Jia Liu, University of Chicago
Event Type: HEP Seminar
Time: 2:00 PM - 3:30 PM
Location: 726 Broadway, 940, CCPP Seminar
Description: We explore the physics potential of using precision timing information at the LHC in searches for long-lived particles (LLP). In comparison with the light Standard Model particles, the decay products of massive LLPs arrive at detectors with sizable time delay. We propose new strategies to take advantage of this property, using the initial state radiation jet to timestamp the event and only requiring a single LLP to decay inside the detector. This search strategy can be effective for a broad range of models. In addition to outlining the general approach, we demonstrate its effectiveness with the projected reach for two benchmark scenarios: Higgs decaying into a pair of LLPs, and pair production of long-lived neutralinos in the gauge mediated supersymmetry breaking scenario. Our strategy increases the sensitivity to the lifetime of the LLP by orders of magnitude and exhibits better behavior particularly in the large lifetime region compared to traditional LLP searches at colliders. The timing information significantly reduces the Standard Model background and provides a powerful new dimension for LLP searches.

Astro Ph
Event Type: Astro Ph
Time: 4:00 PM - 4:30 PM
Location: 726 Broadway, 902, Lg Conf