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Search for an excess of events with an identical flavour lepton pair and significant missing transverse momentum in vs=7 TeV proton–proton collisions with the ATLAS detector

journal contribution
posted on 2023-06-08, 07:36 authored by G Aad, Antonella De SantoAntonella De Santo, The ATLAS Collaboration
Results are presented of a search for particles decaying into final states with significant missing transverse momentum and exactly two identical flavour leptons (e, µ) of opposite charge in vs=7 TeV collisions at the Large Hadron Collider. This channel is particularly sensitive to supersymmetric particle cascade decays producing flavour correlated lepton pairs. Flavour uncorrelated backgrounds are subtracted using a sample of opposite flavour lepton pair events. Observation of an excess beyond Standard Model expectations following this subtraction procedure would offer one of the best routes to measuring the masses of supersymmetric particles. In a data sample corresponding to an integrated luminosity of 35 pb-1 no such excess is observed. Model-independent limits are set on the contribution to these final states from supersymmetry and are used to exclude regions of a phenomenological supersymmetric parameter space.

History

Publication status

  • Published

Journal

The European Physical Journal C - Particles and Fields

ISSN

1434-6044

Publisher

Springer Verlag

Issue

7

Volume

71

Page range

1647

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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