Measurements of the pp WZ inclusive and differential production cross sections and constraints on charged anomalous triple gauge couplings at s=13 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Dragicevic, M, Eroe, J, Del Valle, A Escalante
et al (show 2266 more authors) (2019) Measurements of the pp WZ inclusive and differential production cross sections and constraints on charged anomalous triple gauge couplings at s=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2019 (4). 122-.

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Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title> <jats:p>The WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \sqrt{s} $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> </jats:alternatives> </jats:inline-formula> = 13 TeV using data collected with the CMS detector, corresponding to an integrated luminosity of 35.9 fb<jats:sup>−1</jats:sup>. The inclusive cross section is measured to be <jats:italic>σ</jats:italic> <jats:sub>tot</jats:sub>(pp → WZ) = 48.09 <jats:sub>− 0.96</jats:sub> <jats:sup>+ 1.00</jats:sup> (stat) <jats:sub>− 0.37</jats:sub> <jats:sup>+ 0.44</jats:sup> (theo) <jats:sub>− 2.17</jats:sub> <jats:sup>+ 2.39</jats:sup> (syst) ± 1.39(lum) pb, resulting in a total uncertainty of −2.78/+2.98 pb. Fiducial cross section and ratios of charge-dependent cross section measurements are provided. Differential cross section measurements are also presented with respect to three variables: the Z boson transverse momentum <jats:italic>p</jats:italic> <jats:sub>T</jats:sub>, the leading jet <jats:italic>p</jats:italic> <jats:sub>T</jats:sub>, and the <jats:italic>M</jats:italic>(WZ) variable, defined as the invariant mass of the system composed of the three leptons and the missing transverse momentum. Differential measurements with respect to the W boson <jats:italic>p</jats:italic> <jats:sub>T</jats:sub>, separated by charge, are also shown. Results are consistent with standard model predictions, favouring next-to-next-to-leading-order predictions over those at next-to-leading order. Constraints on anomalous triple gauge couplings are derived via a binned maximum likelihood fit to the <jats:italic>M</jats:italic>(WZ) variable. </jats:p>

Item Type: Article
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Particle and resonance production
Depositing User: Symplectic Admin
Date Deposited: 20 May 2019 13:28
Last Modified: 17 Mar 2024 03:43
DOI: 10.1007/JHEP04(2019)122
Open Access URL: https://doi.org/10.1007/JHEP04(2019)122
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3042180