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

The ATLAS collaboration, B. Budick, K. Cranmer, A. Haas, A. I. Mincer, P. Nemethy

Research output: Contribution to journalArticle

Abstract

The production of W bosons in association with two jets in proton-proton collisions at a centre-of-mass energy of √ 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.

Original languageEnglish (US)
Article number033038
JournalNew Journal of Physics
Volume15
Issue number3
DOIs
StatePublished - Mar 25 2013

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partons
detectors
protons
interactions
transverse momentum
center of mass
bosons
luminosity
collisions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Measurement of hard double-parton interactions in W(→ lν) + 2-jet events at √s = 7 TeV with the ATLAS detector. / The ATLAS collaboration; Budick, B.; Cranmer, K.; Haas, A.; Mincer, A. I.; Nemethy, P.

In: New Journal of Physics, Vol. 15, No. 3, 033038, 25.03.2013.

Research output: Contribution to journalArticle

The ATLAS collaboration ; Budick, B. ; Cranmer, K. ; Haas, A. ; Mincer, A. I. ; Nemethy, P. / Measurement of hard double-parton interactions in W(→ lν) + 2-jet events at √s = 7 TeV with the ATLAS detector. In: New Journal of Physics. 2013 ; Vol. 15, No. 3.
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AU - Budick, B.

AU - Cranmer, K.

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AU - Nemethy, P.

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N2 - The production of W bosons in association with two jets in proton-proton collisions at a centre-of-mass energy of √ 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.

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