Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV

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Abstract

The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a hadronically decaying tau lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb(-1) recorded by a dedicated multijet plus hadronically decaying tau trigger. A neural network has been developed to separate the top-quark pairs from the W + jets and multijet backgrounds. The measured value of sigma(t (t) over bar) = 152 +/- 12 (stat.) +/- 32 (syst.) +/- 3 (lum.) pb is consistent with the standard model predictions.

Autore Pugliese

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  • POMPILI A.;SELVAGGI G.;ABBRESCIA M.;DE PALMA M.;MY S.;NUZZO S.V.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2013

ISSN

1434-6044

ISBN

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Numero di citazioni Wos

13

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Numero di citazioni Scopus

26

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Settori ERC

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Codici ASJC

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