Measurement of the $\mathrm{Z}\gamma^{*} \to \tau\tau$ cross section in pp collisions at $\sqrt{s} = $ 13 TeV and validation of $\tau$ lepton analysis techniques - INSPIRE

DataBETA

Measurement of the $\mathrm{Z}\gamma^{*} \to \tau\tau$ cross section in pp collisions at $\sqrt{s} =$ 13 TeV and validation of $\tau$ lepton analysis techniques

CMS

Collaboration

Jan 10, 2018

68 pages

Published in:

Eur.Phys.J.C 78 (2018) 9, 708

Published: Sep 3, 2018

e-Print:

1801.03535 [hep-ex]

DOI:

10.1140/epjc/s10052-018-6146-9

Report number:

CMS-HIG-15-007,
CERN-EP-2017-307

Experiments:

CERN-LHC-CMS

View in:

reference search56 citations

Citations per year

Abstract: (Springer)

A measurement is presented of the

\mathrm {Z}/\gamma ^{*} \rightarrow \tau \tau

cross section in

\text {pp}

collisions at

\sqrt{s} = 13\hbox { TeV}

, using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of

2.3\hbox { fb}^{-1}

. The product of the inclusive cross section and branching fraction is measured to be

\sigma (\text {pp} \rightarrow \mathrm {Z}/\gamma ^{*}\text {+X}) \, \mathcal {B}(\mathrm {Z}/\gamma ^{*} \rightarrow \tau \tau ) = 1848 \pm 12\,(\text {stat}) \pm 67\text { (syst \,+\,lumi)}\text { pb}

, in agreement with the standard model expectation, computed at next-to-next-to-leading order accuracy in perturbative quantum chromodynamics. The measurement is used to validate new analysis techniques relevant for future measurements of

\tau

lepton production. The measurement also provides the reconstruction efficiency and energy scale for

\tau

decays to hadrons

\,+\,\nu _{\tau }

final states, determined with respective relative uncertainties of 2.2 and 0.9%.

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-15-007/ (CMS Public Pages)

p p: scattering
p p: colliding beams
Z0: hadroproduction
Drell-Yan process
Z0: leptonic decay
tau: pair production
perturbation theory: higher-order
higher-order: 2
quantum chromodynamics: perturbation theory
CERN LHC Coll

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