A measurement of inclusive Z ->tau+ tau- production in pp collisions is presented, in the final states muon+hadrons, e+hadrons, e+muon, and muon+muon. The data sample corresponds to an integrated luminosity of 36 pb^-1 collected with the CMS detector at the LHC. The measured cross section is sigma(pp -> ZX) x BR (Z -> tau+ tau-) = 1.00 +- 0.05 (stat.) +- 0.08 (syst.) +- 0.04 (lumi.) nb, which is in good agreement with the next-to-next-toleading order QCD prediction and with previous measurements in the Z -> e+e-and muon+muon-channels. The reconstruction efficiency for hadronic tau decays is determined with a precision of 7%.

S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2011). Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 1108, 117.1-117.31 [10.1007/JHEP08(2011)117].

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

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MASETTI, GIANNI;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;PRIMAVERA, FEDERICA;ROSSI, ANTONIO MARIA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;BRIGLIADORI, LUCA
2011

Abstract

A measurement of inclusive Z ->tau+ tau- production in pp collisions is presented, in the final states muon+hadrons, e+hadrons, e+muon, and muon+muon. The data sample corresponds to an integrated luminosity of 36 pb^-1 collected with the CMS detector at the LHC. The measured cross section is sigma(pp -> ZX) x BR (Z -> tau+ tau-) = 1.00 +- 0.05 (stat.) +- 0.08 (syst.) +- 0.04 (lumi.) nb, which is in good agreement with the next-to-next-toleading order QCD prediction and with previous measurements in the Z -> e+e-and muon+muon-channels. The reconstruction efficiency for hadronic tau decays is determined with a precision of 7%.
2011
S. CHATRCHYAN, V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, et al. (2011). Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 1108, 117.1-117.31 [10.1007/JHEP08(2011)117].
S. CHATRCHYAN; V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER .A N(O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/119338
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