Measurement of differential production cross-sections for a Z boson in association with b-jets in 7 TeV proton-proton collisions with the ATLAS detector [Elektronisk resurs]
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Aad, G. (författare)
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Brenner, Richard (författare)
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Buszello, Claus P. (författare)
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Ekelöf, Tord (författare)
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Ellert, Mattias (författare)
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Ferrari, Arnaud (författare)
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Isaksson, Charlie (författare)
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Madsen, Alexander (författare)
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Öhman, Henrik (författare)
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Pelikan, Daniel (författare)
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Rangel-Smith, Camilla (författare)
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Zwalinski, L. (författare)
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Uppsala universitet Teknisk-naturvetenskapliga vetenskapsområdet (utgivare)
- 2014
- Engelska.
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Ingår i: Journal of High Energy Physics (JHEP). - 1029-8479. ; 10, 141
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Sammanfattning
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- Measurements of differential production cross-sections of a Z boson in association with b-jets in pp collisions at root s = 7 TeV are reported. The data analysed correspond to an integrated luminosity of 4.6 fb(-1) recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a Z boson decaying into an electron or muon pair, and containing b-jets. For events with at least one b-jet, the cross-section is presented as a function of the Z boson transverse momentum and rapidity, together with the inclusive b-jet cross-section as a function of b-jet transverse momentum, rapidity and angular separations between the b-jet and the Z boson. For events with at least two b-jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum b-jets, and as a function of the Z boson transverse momentum and rapidity. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.
Ämnesord
- Natural Sciences (hsv)
- Physical Sciences (hsv)
- Naturvetenskap (hsv)
- Fysik (hsv)
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