Artículo
Measurements of the production cross-section for a Z boson in association with b-jets in proton-proton collisions at sqrt{s}=13 TeV with the ATLAS detector
Aad, G.; Abbott, B.; Abbott, D. C.; Abed Abud, A.; Abeling, K.; Abhayasinghe, D. K.; Abidi, S. H.; AbouZeid, O. S.; Abraham, N. L.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. S.; Achkar, B.; Adam, L.; Bourdarios, C. Adam; Adamczyk, L.; Adamek, L.; Adelman, J.; Adersberger, M.; Adiguzel, A.; Adorni, S.; Adye, T.; Affolder, A. A.; Afik, Y.; Agapopoulou, C.; Agaras, M. N.; Aggarwal, A.; Agheorghiesei, C.; Piegaia, Ricardo Nestor
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Fecha de publicación:
07/07/2020
Editorial:
Springer
Revista:
Journal of High Energy Physics
ISSN:
1029-8479
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This paper presents a measurement of the production cross-section of a Z boson in association with b-jets, in proton-proton collisions at s√=13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 35.6 fb−1. Inclusive and differential cross-sections are measured for events containing a Z boson decaying into electrons or muons and produced in association with at least one or at least two b-jets with transverse momentum pT> 20 GeV and rapidity |y|<2.5. Predictions from several Monte Carlo generators based on leading-order (LO) or next-to-leading-order (NLO) matrix elements interfaced with a parton-shower simulation and testing different flavour schemes for the choice of initial-state partons are compared with measured cross-sections. The 5-flavour number scheme predictions at NLO accuracy agree better with data than 4-flavour number scheme ones. The 4-flavour number scheme predictions underestimate data in events with at least one b-jet.
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Articulos de INST.DE FISICA DE BUENOS AIRES
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Citación
Aad, G. ; Abbott, B.; Abbott, D. C.; Abed Abud, A.; Abeling, K.; et al.; Measurements of the production cross-section for a Z boson in association with b-jets in proton-proton collisions at sqrt{s}=13 TeV with the ATLAS detector; Springer; Journal of High Energy Physics; 44; 7-7-2020; 1-58
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