Search for dark matter particles in proton-proton collisions at root 8 = TeV using the razor variables

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Abstract

A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 fb(-1), at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90 confidence level for a mediator mass scale I > below 1 TeV. The use of razor variables yields results that complement those previously published.

Autore Pugliese

Tutti gli autori

  • POMPILI A.;CALABRIA C.;MINIELLO G.;SELVAGGI G.;CRISTELLA L.;ABBRESCIA M.;DE PALMA M.;RADOGNA R.;VENDITTI R.;MY S.;NUZZO S.V.

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Anno di pubblicazione

2016

ISSN

1029-8479

ISBN

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Numero di citazioni Wos

1

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Numero di citazioni Scopus

1

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