Measurement of hard double-parton interactions in W (->lnu) + 2 jet events at sqrt(s) = 7 TeV with the ATLAS detector

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Abstract

The production of W bosons in association with two jets in proton–proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36 pb−1, collected with the ATLAS detector at the Large Hadron Collider. The fraction of events arising from double-parton interactions, f(D)DP, has been measured through the pT balance between the two jets and amounts to f(D)DP = 0.08 ± 0.01 (stat.) ± 0.02 (sys.) for jets with transverse momentum pT > 20 GeV and rapidity |y| < 2.8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of σeff = 15 ± 3 (stat.) +5−3 (sys.) mb.

Autore Pugliese

Tutti gli autori

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

Titolo volume/Rivista

NEW JOURNAL OF PHYSICS

Anno di pubblicazione

2013

ISSN

1367-2630

ISBN

Non Disponibile

Numero di citazioni Wos

71

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

94

Ultimo Aggiornamento Citazioni

22/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile