Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV

Abstract

A measurement of inclusive Z to tau^+ tau^- production in pp collisions is presented, in the final states mu+hadrons, e+hadrons, e+mu, and mu+mu. The data sample corresponds to an integrated luminosity of 36 inverse picobarns collected with the CMS detector at the LHC. The measured cross section is sigma(pp to Z) B(Z to tau^+ tau^-) = 1.00 +/- 0.05 (stat.) +/- 0.08 (syst.) +/-0.04 (lumi.) nb, which is in good agreement with the next-to-next-to-leading order QCD prediction and with previous measurements in the Z to e^+e^- and mu^+ mu^- channels. The reconstruction efficiency for hadronic tau decays is determined with a precision of 7%.

References in corpus (12)

• PYTHIA 6.4 Physics and Manual
• Parton distributions for the LHC
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• NLO vector-boson production matched with shower in POWHEG
• A first unbiased global NLO determination of parton distributions and their uncertainties
• Measurements of Inclusive W and Z Cross Sections in pp Collisions at sqrt(s)=7 TeV
• Measurement of the W -> lnu and Z/gamma* -> ll production cross sections in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Early LHC Underlying Event Data - Findings and Surprises
• Search for Neutral MSSM Higgs Bosons Decaying to Tau Pairs in pp Collisions at sqrt(s)=7 TeV
• CT10 parton distributions and other developments in the global QCD analysis
• Measurement of sigma(ppbar -> Z + X) Br(Z -> tau+tau-) at sqrt(s)=1.96 TeV

Cited by in corpus (33)

• Observation of a new boson with mass near 125 GeV in pp collisions at sqrt(s) = 7 and 8 TeV
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
• Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions
• Search for neutral Higgs bosons decaying to tau pairs in pp collisions at sqrt(s) = 7 TeV
• A search for a doubly-charged Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Measurement of W+W- and ZZ production cross sections in pp collisions at sqrt(s) = 8 TeV
• Performance of tau-lepton reconstruction and identification in CMS
• Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $\sqrt{s}$ = 7 TeV
• Reconstruction and identification of tau lepton decays to hadrons and tau neutrino at CMS
• Measurement of inclusive W and Z boson production cross sections in pp collisions at sqrt(s) = 8 TeV
• Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV
• Search for New Physics with Jets and Missing Transverse Momentum in pp collisions at sqrt(s) = 7 TeV
• Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h to tau tau
• Measurement of the ZZ production cross section and search for anomalous couplings in 2l2l' final states in pp collisions at sqrt(s) = 7 TeV
• Search for heavy neutrinos and third-generation leptoquarks in hadronic states of two $\tau$ leptons and two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for heavy neutrinos or third-generation leptoquarks in final states with two hadronically decaying tau leptons and two jets in proton-proton collisions at sqrt(s) = 13 TeV
• Strange Quark PDFs and Implications for Drell-Yan Boson Production at the LHC
• Measurement of the Z to tau tau cross section with the ATLAS detector
• Search for high-mass resonances decaying into tau-lepton pairs in pp collisions at sqrt(s) = 7 TeV
• Low mass neutralino dark matter in mSUGRA and more general models in the light of LHC data
• Simultaneous measurements of the $t\bar{t}$, $W^{+}{W}^{-}$, and $Z/{\gamma }^{\ast }\to \tau \tau$ production cross-sections in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Search for supersymmetry in the vector-boson fusion topology in proton-proton collisions at sqrt(s) = 8 TeV
• Search for the standard model Higgs boson in the H to ZZ to ll tau tau decay channel in pp collisions at sqrt(s)=7 TeV
• Constraining $\tau$-lepton dipole moments and gluon couplings at the LHC
• Measurement of the $\mathrm{Z}{\gamma }^{\ast }\to \tau \tau$ cross section in pp collisions at $\sqrt{s}=$ 13 TeV and validation of $\tau$ lepton analysis techniques
• Search for electroweak production of charginos in final states with two tau leptons in pp collisions at sqrt(s) = 8 TeV
• Hard Processes in Proton-Proton Collisions at the Large Hadron Collider
• Weak properties of the tau lepton via a spin-0 unparticle
• Measurement of $\tau$ polarisation in $Z/{\gamma }^{\ast }\to \tau \tau$ decays in proton-proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Spin correlations and new physics in $\tau$-lepton decays at the LHC
• Electroweak Measurements with the ATLAS and CMS Experiments
• Observation of W to tau and neutrino Production in pp Collisions at sqrt(s) = 7 TeV