Measurement of hard double-parton interactions in W(→ℓν) + 2-jet events at √s = 7 TeV with the ATLAS detector
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 Larg...
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| Autores principales: | , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/78753 |
| Aporte de: |
| Sumario: | 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 σ eff = 15±3 (stat.) +5 −3 (sys.) mb. |
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