Search for dark Matter in events with single Z and missing transverse Energy using pp collisions at sqrt(s) = 8 TeV with the ATLAS detector

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Abstract

A search is presented for production of dark-matter particles recoiling against a leptonically decaying Z boson in 20.3  fb−1 of pp collisions at sqrt(s) = 8  TeV with the ATLAS detector at the Large Hadron Collider. Events with large missing transverse momentum and two oppositely charged electrons or muons consistent with the decay of a Z boson are analyzed. No excess above the Standard Model prediction is observed. Limits are set on the mass scale of the contact interaction as a function of the dark-matter particle mass using an effective field theory description of the interaction of dark matter with quarks or with Z bosons. Limits are also set on the coupling and mediator mass of a model in which the interaction is mediated by a scalar particle.

Autore Pugliese

Tutti gli autori

  • G. AAD , G. CHIODINI , E. GORINI , M. PRIMAVERA , S. SPAGNOLO , A. VENTURA , ET AL.

Titolo volume/Rivista

PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY

Anno di pubblicazione

2014

ISSN

1550-7998

ISBN

Non Disponibile

Numero di citazioni Wos

29

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

62

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile