Institute of Theoretical Physics

Chinese Academy of Sciences

State Key Laboratory of Theoretical Physics

人才引进面试报告

Title

题目

"Probing light Neutralino Dark Matter at the LHC"
　

Speaker

报告人

Dr. Lorenzo Calibbi
　

Affiliation

所在单位

the Service de Physique Theorique, Universite Libre de Bruxelles, Belgium
　

Date

日期

15:00 pm, May 20,2014
　

Venue

地点

Conference Hall 322, ITP/理论物理所322报告厅
　

Abstract

摘要

I will discuss the current status of the light neutralino dark matter scenario within the minimal supersymmetric standard model (MSSM) taking into account latest results from the LHC. Constraints from the dark matter relic abundance lead us to a manageable simplified model defined by a subset of MSSM parameters, within which we could reinterpret recent searches for electroweak supersymmetric particle production based on events with multi-tau plus missing transverse momentum, performed by the ATLAS collaboration. In this way we could derive stringent constraints on the light neutralino parameter space. In combination with further experimental information from the LHC, in particular the bounds on possible invisible Higgs decays, we obtained a lower bound on the lightest neutralino that is stronger than any current limit set by underground direct dark matter searches or indirect detection experiments.