# 2019 Meeting of the Division of Particles & Fields of the American Physical Society

29 July 2019 to 2 August 2019
Northeastern University
US/Eastern timezone

## Search for neutral long-lived particles decaying into displaced jets in the ATLAS calorimeter

29 Jul 2019, 14:00
15m
Shillman 335 (Northeastern University)

### Shillman 335

#### Northeastern University

Oral Presentation Beyond Standard Model Physics

### Speaker

Mason Proffitt (University of Washington (US))

### Description

New long-lived particles (LLPs) are a feature of many extensions to the Standard Model and may elude searches for promptly decaying particles. An analysis of data collected in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector at the Large Hadron Collider is described, focusing on identifying signatures of jets produced by LLPs decaying to Standard Model fermions within the ATLAS calorimeter system. The most recent results of this analysis, published this year using data collected in 2016, are presented, and plans for improving this analysis with the full Run 2 dataset (2015-2018) are summarized.

### Primary author

Mason Proffitt (University of Washington (US))