# SUSY10

Aug 23 – 28, 2010
Bonn
Europe/Berlin timezone

## Ultrarelativistic sneutrinos at the LHC and sneutrino-antisneutrino oscillation

Aug 24, 2010, 3:08 PM
15m
Gr. Hörsaal Mathematik (Bonn)

Nussallee 12

### Speaker

Mr Tuomas Honkavaara (Helsinki Institute of Physics)

### Description

Sneutrino-antisneutrino oscillation can be a very useful probe to look for signatures of lepton number violation ($\Delta L$ = 2) at the LHC. Here, we discuss the effect of the boost factor $\gamma$ and the travelling distance $L$ on the probability of the oscillation. We demonstrate that these two parameters can significantly alter the probability of the oscillation when the sneutrinos are ultrarelativistic and have a very small total decay width. We propose a scenario where these requirements are fulfilled and which produces interesting signals at the LHC even for a mass splitting $\Delta m$ as small as $10^{-14}$ GeV between the sneutrino mass eigenstates.

### Primary author

Mr Tuomas Honkavaara (Helsinki Institute of Physics)

### Co-authors

Dr Dilip Ghosh (Department of Theoretical Physics and Centre for Theoretical Sciences, Indian Association for the Cultivation of Science) Prof. Katri Huitu (University of Helsinki) Dr Roy Sourov (Department of Theoretical Physics and Centre for Theoretical Sciences, Indian Association for the Cultivation of Science)

 Slides