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title: 'Measurement of differential and integrated fiducial cross sections for Higgs boson production in the four-lepton decay channel in $\Pp \Pp$ collisions at $\sqrt{s} = 7$ and $8\TeV$'
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$Revision: 330691 $ $HeadURL: svn+ssh://svn.cern.ch/reps/tdr2/papers/HIG-14-028/trunk/HIG-14-028.tex $ $Id: HIG-14-028.tex 330691 2016-03-04 18:47:55Z alverson $

Introduction {#sec:IntroductionPAS}
============

The observation of a new boson consistent with the standard model (SM) Higgs boson [@Englert:1964et; @Higgs:1964ia; @Higgs:1964pj; @Guralnik:1964eu; @Higgs:1966ev; @Kibble:1967sv] was reported by the ATLAS and CMS collaborations in 2012 [@Aad:2012tfa; @Obs:2012gu]. Subsequent measurements confirmed that the properties of the new boson, such as its couplings and decay width, are indeed consistent with expectations for the SM Higgs boson [@Chatrchyan:2013lba; @Aad:2013wqa; @CMS:2014ega; @Aad:2015gba; @Aad:2015zhl] (and references given therein).

In this paper we present measurements of the integrated and differential cross sections for the production of four leptons via the $\PH \to 4\ell$ decays ($\ell = \Pe$, $\mu$) in pp collisions at centre-of-mass energies of 7 and 8. All cross sections are measured in a restricted part of the phase space (fiducial phase space) defined to match the experimental acceptance in terms of the lepton kinematics and topological event selection. The ${\ensuremath{\PH \to 4\ell}\xspace}$ denotes the Higgs boson decay to the 