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Measurement of the $Z$ boson differential cross section in transverse momentum and rapidity in proton–proton collisions at 8 TeV


CMS Collaboration; Khachatryan, V; Sirunyan, A M; Tumasyan, A; Amsler, C; Canelli, F; Chiochia, V; De Cosa, A; Hinzmann, A; Hreus, T; Kilminster, B; Lange, C; Ngadiuba, J; Pinna, D; Robmann, P; Ronga, F J; Taroni, S; Yang, Y; et al (2015). Measurement of the $Z$ boson differential cross section in transverse momentum and rapidity in proton–proton collisions at 8 TeV. Physics Letters B, 749:187-209.

Abstract

We present a measurement of the $Z$ boson differential cross section in rapidity and transverse momentum using a data sample of pp collision events at a centre-of-mass energy $\sqrt{s}$=8 TeV , corresponding to an integrated luminosity of 19.7 $fb^{−1}$. The $Z$ boson is identified via its decay to a pair of muons. The measurement provides a precision test of quantum chromodynamics over a large region of phase space. In addition, due to the small experimental uncertainties in the measurement the data has the potential to constrain the gluon parton distribution function in the kinematic regime important for Higgs boson production via gluon fusion. The results agree with the next-to-next-to-leading-order predictions computed with the fewz program. The results are also compared to the commonly used leading-order MadGraph and next-to-leading-order powheg generators.

Abstract

We present a measurement of the $Z$ boson differential cross section in rapidity and transverse momentum using a data sample of pp collision events at a centre-of-mass energy $\sqrt{s}$=8 TeV , corresponding to an integrated luminosity of 19.7 $fb^{−1}$. The $Z$ boson is identified via its decay to a pair of muons. The measurement provides a precision test of quantum chromodynamics over a large region of phase space. In addition, due to the small experimental uncertainties in the measurement the data has the potential to constrain the gluon parton distribution function in the kinematic regime important for Higgs boson production via gluon fusion. The results agree with the next-to-next-to-leading-order predictions computed with the fewz program. The results are also compared to the commonly used leading-order MadGraph and next-to-leading-order powheg generators.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:14 April 2015
Deposited On:16 Feb 2016 15:23
Last Modified:29 Sep 2017 12:42
Publisher:Elsevier
ISSN:0370-2693
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2015.07.065
Related URLs:http://arxiv.org/abs/1504.03511 (Organisation)

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