Publications by authors named "C Boulahouache"
An inclusive search is presented for new heavy particle pairs produced in √s=7 TeV proton-proton collisions at the LHC using 4.7±0.1 fb(-1) of integrated luminosity.
View Article and Find Full Text PDFArticle Synopsis
- The study reports the first measurements of vector-boson production associated with a top quark-antiquark pair during proton-proton collisions at a center-of-mass energy of 7 TeV, using data from the CMS detector at the LHC from 2011.
- Two analysis channels were employed: a trilepton analysis for ttZ events and a same-sign dilepton analysis for ttV events (where V can be W or Z).
- The measured cross sections are σ(ttZ) = 0.28 pb and σ(ttV) = 0.43 pb, both significant at over 3 standard deviations, and they align with theoretical predictions within the stated uncertainties.
A search for the pair production of a heavy, narrow resonance decaying into two jets has been performed using events collected in sqrt[s] = 7 TeV pp collisions with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb(-1).
View Article and Find Full Text PDFA study is presented of the mass and spin-parity of the new boson recently observed at the LHC at a mass near 125 GeV. An integrated luminosity of 17.3 fb(-1), collected by the CMS experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, is used.
View Article and Find Full Text PDFThe polarizations of the Υ(1S), Υ(2S), and Υ(3S) mesons are measured in proton-proton collisions at sqrt[s] = 7 TeV, using a data sample of Υ(nS) → μ +μ- decays collected by the CMS experiment, corresponding to an integrated luminosity of 4.9 fb(-1). The dimuon decay angular distributions are analyzed in three different polarization frames.
View Article and Find Full Text PDF