Measurement of the $ZZ$ production cross section in $pp$ collisions at $\sqrt{s}$ = 8 TeV using the $ZZ\to\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $ZZ\to\ell^{-}\ell^{+}\nu\bar{\nu}$ channels with the ATLAS detector

M. Aaboud N. Berger 1 M. Delmastro 1 L. Di Ciaccio 1 S. Elles 1 K. Grevtsov 1 T. Guillemin 1 T. Hryn’ova 1 S. Jézéquel 1 I. Koletsou 1 R. Lafaye 1 Jérémy Lévêque 1 P. Mastrandea 1 E. Sauvan 1 B.H. Smart 1 T. Todorov 1 I. Wingerter-Seez 1 E. Yatsenko 1 D. Boumediene 2 E. Busato 2 D. Calvet 2 S. Calvet 2 A.R. Chomont 2 J. Donini 2 Ph. Gris 2 R. Madar 2 D. Pallin 2 S.M. Romano Saez 2 C. Santoni 2 F. Vazeille 2 G. Aad 3 M. Alstaty 3 M. Barbero 3 A. Calandri 3 T.P. Calvet 3 Y. Coadou 3 C. Diaconu 3 F. Djama 3 V. Ellajosyula 3 L. Feligioni 3 A. Hadef 3 G.D. Hallewell 3 F. Hubaut 3 S.J. Kahn 3 E. B. F. G. Knoops 3 E. Le Guirriec 3 J. Liu 3 K. Liu 3 D. Madaffari 3 E. Monnier 3 S. Muanza 3 E. Nagy 3 P. Pralavorio 3 Y. Rodina 3 A. Rozanov 3 M. Talby 3 T. Theveneaux-Pelzer 3 R.E. Ticse Torres 3 S. Tisserant 3 J. Toth 3 F. Touchard 3 L. Vacavant 3 Chen Wang 3 S. Albrand 4 S. Berlendis 4 A. Bethani 4 C. Camincher 4 J. Collot 4 S. Crépé-Renaudin 4 P.A. Delsart 4 C. Gabaldon 4 M.H. Genest 4 P.O.J. Gradin 4 J.Y. Hostachy 4 F. Ledroit-Guillon 4 A. Lleres 4 A. Lucotte 4 F. Malek 4 E. Petit 4 J. Stark 4 B. Trocmé 4 M. Wu 4 G. Rahal 5
1 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
3 CPPM - Centre de Physique des Particules de Marseille
4 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
5 CC-IN2P3 - Centre de Calcul de l'IN2P3
Abstract : A measurement of the $ZZ$ production in the $\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $\ell^{-}\ell^{+}\nu\bar{\nu}$ channels $(\ell = e, \mu)$ in proton--proton collisions at $\sqrt{s} = 8$ TeV at the Large Hadron Collider at CERN, using data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ collected by the ATLAS experiment in 2012 is presented. The fiducial cross sections for $ZZ\to\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $ZZ\to \ell^{-}\ell^{+}\nu\bar{\nu}$ are measured in selected phase-space regions. The total cross section for $ZZ$ events produced with both $Z$ bosons in the mass range 66 to 116 GeV is measured from the combination of the two channels to be $7.3\pm0.4\textrm{(stat)}\pm0.3\textrm{(syst)}\pm0.2\textrm{(lumi)}$ pb, which is consistent with the Standard Model prediction of $6.6^{+0.7}_{-0.6}$ pb. The differential cross sections in bins of various kinematic variables are presented. The differential event yield as a function of the transverse momentum of the leading $Z$ boson is used to set limits on anomalous neutral triple gauge boson couplings in $ZZ$ production.
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Journal articles
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http://hal.in2p3.fr/in2p3-01388543
Contributor : Claudine Bombar <>
Submitted on : Thursday, October 27, 2016 - 11:03:58 AM
Last modification on : Tuesday, November 5, 2019 - 4:32:43 PM

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IN2P3 | LPC-CLERMONT | CNRS | CPPM | UNIV-AMU | PRES_CLERMONT | LAPP | UNIV-SAVOIE | LPSC | UGA

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M. Aaboud, N. Berger, M. Delmastro, L. Di Ciaccio, S. Elles, et al.. Measurement of the $ZZ$ production cross section in $pp$ collisions at $\sqrt{s}$ = 8 TeV using the $ZZ\to\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $ZZ\to\ell^{-}\ell^{+}\nu\bar{\nu}$ channels with the ATLAS detector. Journal of High Energy Physics, Springer Verlag (Germany), 2017, 01, pp.099. ⟨10.1007/JHEP01(2017)099⟩. ⟨in2p3-01388543⟩

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