Production of Z bosons in the parton branching method

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Ikusi/Ireki
Data
2019-10-24
Egilea
Bermúdez Martínez, A.
Connor, P.
Domínguez Damiani, D.
Estévez Banos, L.I.
Hautmann, Francesco
Jung, H.
Lidrych, J.
Schmitz, M.
Taheri Monfared, S.
Wang, Q.
Žlebčík, R.
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Physical Review D 100(7) : (2019) // Article ID 074027
URI
http://hdl.handle.net/10810/39046
Laburpena
Transverse momentum dependent (TMD) parton distributions obtained from the parton branching (PB) method are combined with next-to-leading-order (NLO) calculations of Drell-Yan (DY) production. We apply the MC@NLO method for the hard process calculation and matching with the PB TMDs. We compute predictions for the transverse momentum, rapidity, and phi* spectra of Z-bosons. We find that the theoretical uncertainties of the predictions are dominated by the renormalization and factorization scale dependence, while the impact of TMD uncertainties is moderate. The theoretical predictions agree well, within uncertainties, with measurements at the Large Hadron Collider (LHC). In particular, we study the region of lowest transverse momenta at the LHC, and comment on its sensitivity to nonperturbative TMD contributions.
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Bestelakorik adierazi ezean, itemaren baimena horrela deskribatzen da:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.