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Measurement of the Normalized $Z/\gamma^*\to\mu^+\mu^-$ Transverse Momentum Distribution in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. (Elementarpartikelfysik)
2010 (engelsk)Inngår i: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 693, nr 5, s. 522-530Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We present a new measurement of the Z/γ transverse momentum distribution in the range 0–330 GeV, in proton–antiproton collisions at . The measurement uses 0.97 fb−1 of integrated luminosity recorded by the D0 experiment and is the first using the Z/γμ+μ+X channel at this center-of-mass energy. This is also the first measurement of the Z/γ transverse momentum distribution that presents the result at the level of particles entering the detector, minimizing dependence on theoretical models. As any momentum of the Z/γ in the plane transverse to the incoming beams must be balanced by some recoiling system, primarily the result of QCD radiation in the initial state, this variable is an excellent probe of the underlying process. Tests of the predictions of QCD calculations and current event generators show they have varied success in describing the data. Using this measurement as an input to theoretical predictions will allow for a better description of hadron collider data and hence it will increase experimental sensitivity to rare signals.

sted, utgiver, år, opplag, sider
2010. Vol. 693, nr 5, s. 522-530
Emneord [en]
Z bosons, Differential cross section, Perturbative QCD, Event generators, Monte Carlo models
HSV kategori
Forskningsprogram
fysik
Identifikatorer
URN: urn:nbn:se:su:diva-47323DOI: 10.1016/j.physletb.2010.09.012ISI: 000283701300003OAI: oai:DiVA.org:su-47323DiVA, id: diva2:373639
Prosjekter
D0
Forskningsfinansiär
Swedish Research Council
Merknad
Publikationen har totalt 445 författare, V. Abazov et al.Tilgjengelig fra: 2010-12-01 Laget: 2010-12-01 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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