he production of W bosons in association with two jets in proton–proton collisions at a centre-of-mass energy of √ s = 7TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36pb − 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 p T balance between the two jets and amounts to f ( D ) DP = 0 . 08 ± 0 . 01 ( stat .) ± 0 . 02 ( sys .) for jets with transverse momentum p T > 20GeV and rapidity | y | < 2 . 8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of σ eff = 15 ± 3 ( stat .) +5 − 3 ( sys .) mb.

G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, A A Abdelalim, et al. (2013). Measurement of hard double-parton interactions inW(???) + 2-jet events at $\sqrt{s}\,=7$ TeV with the ATLAS detector. NEW JOURNAL OF PHYSICS, 15, 033038-1-033038-39 [10.1088/1367-2630/15/3/033038].

Measurement of hard double-parton interactions inW(???) + 2-jet events at $\sqrt{s}\,=7$ TeV with the ATLAS detector

BELLAGAMBA, LORENZO;BERTIN, ANTONIO;BOSCHERINI, DAVIDE;BRUNI, ALESSIA;BRUNI, GRAZIANO;CAFORIO, DAVIDE;DE CASTRO, STEFANO;DI SIPIO, RICCARDO;FABBRI, LAURA;FRANCHINI, MATTEO;GIACOBBE, BENEDETTO;MASSA, IGNAZIO GIACOMO;MENGARELLI, ALBERTO;MONZANI, SIMONE;PICCININI, MAURIZIO;RINALDI, LORENZO;ROMANO, MARINO;SBARRA, CARLA;SBRIZZI, ANTONIO;SEMPRINI CESARI, NICOLA;SPIGHI, ROBERTO;VALENTINETTI, SARA;VILLA, MAURO;I. Vivarelli;ZOCCOLI, ANTONIO;
2013

Abstract

he production of W bosons in association with two jets in proton–proton collisions at a centre-of-mass energy of √ s = 7TeV has been analysed for the presence of double-parton interactions using data corresponding to an integrated luminosity of 36pb − 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 p T balance between the two jets and amounts to f ( D ) DP = 0 . 08 ± 0 . 01 ( stat .) ± 0 . 02 ( sys .) for jets with transverse momentum p T > 20GeV and rapidity | y | < 2 . 8. This corresponds to a measurement of the effective area parameter for hard double-parton interactions of σ eff = 15 ± 3 ( stat .) +5 − 3 ( sys .) mb.
2013
G Aad, T Abajyan, B Abbott, J Abdallah, S Abdel Khalek, A A Abdelalim, et al. (2013). Measurement of hard double-parton interactions inW(???) + 2-jet events at $\sqrt{s}\,=7$ TeV with the ATLAS detector. NEW JOURNAL OF PHYSICS, 15, 033038-1-033038-39 [10.1088/1367-2630/15/3/033038].
G Aad; T Abajyan; B Abbott; J Abdallah; S Abdel Khalek; A A Abdelalim; O Abdinov; R Aben; B Abi; M Abolins; O S AbouZeid; H Abramowicz; H Abreu; M I O...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/143375
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