Measurements of the $$\mathrm {p}\mathrm {p}\rightarrow \mathrm{Z}\mathrm{Z}$$pp→ZZ production cross section and the $$\mathrm{Z}\rightarrow 4\ell$$Z→4ℓ branching fraction, and constraints on anomalous triple gauge couplings at $$\sqrt{s} = 13\,\text {TeV}$$s=13TeV
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Publication Date:
NSF-PAR ID:
10058298
Journal Name:
The European Physical Journal C
Volume:
78
Issue:
2
ISSN:
1434-6044
1. Abstract The production of Z boson pairs in proton–proton ( $${\mathrm{p}} {\mathrm{p}}$$ p p ) collisions, $${{\mathrm{p}} {\mathrm{p}} \rightarrow ({\mathrm{Z}}/\gamma ^*)({\mathrm{Z}}/\gamma ^*) \rightarrow 2\ell 2\ell '}$$ p p → ( Z / γ ∗ ) ( Z / γ ∗ ) → 2 ℓ 2 ℓ ′ , where $${\ell ,\ell ' = {\mathrm{e}}}$$ ℓ , ℓ ′ = e or $${{\upmu }}$$ μ , is studied at a center-of-mass energy of 13 $$\,\text {TeV}$$ TeV with the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 137 $$\,\text {fb}^{-1}$$ fb - 1more »
2. A bstract Measurement of Z-boson production in p-Pb collisions at $$\sqrt{s_{\mathrm{NN}}}$$ s NN = 8 . 16 TeV and Pb-Pb collisions at $$\sqrt{s_{\mathrm{NN}}}$$ s NN = 5 . 02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity − 4 < η μ < − 2 . 5 and transverse momentum $${p}_{\mathrm{T}}^{\mu }$$ p T μ > 20 GeV/ c in the laboratory frame. The invariant yield and nuclear modification factor are measured for opposite-sign dimuons with invariant mass 60 < m μμ < 120more »