20 research outputs found

    Le temple "primitif" de Ptah à Karnak

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    International audienceRecent excavations in the temple of Ptah built by Thutmosis III at Karnak confirm the existence of an earlier building dated to the end of the Second Intermediate Period or the beginning of the 18th Dynasty. The analysis of the mudbrick remains, very deteriorated and difficult to access, discovered under the temple, reveals an earlier mudbrick building composed of three rooms whose orientation differs from that of the Tuthmosid temple. The tripartite composition, however, is comparable to the stone temple, analogy that suggests that the original building could have the same functions as his successor: a sanctuary dedicated to Ptah and Hathor and a place of welcome during the processional outings of Amon.Les fouilles récentes dans le temple de Ptah bâti par Thoutmosis III à Karnak confirment l’existence d’un édifice antérieur daté de la fin de la Deuxième Période intermédiaire ou du début de la XVIIIe dynastie. L’analyse des vestiges en briques, à la fois très détériorés et difficiles d’accès découverts sous le temple, révèle un édifice antérieur en brique composé de trois salles mais dont l’orientation diffère de celle du temple thoutmoside. La composition tripartite est toutefois comparable au temple en pierre, analogie qui permet de proposer que le temple antérieur ait pu, dès l’origine, avoir les mêmes fonctions que son successeur : un sanctuaire consacré à Ptah et à Hathor et un lieu d’accueil lors des sorties processionnelles d’Amon

    Measurement of charged particle spectra in minimum-bias events from proton-proton collisions at root s =13 TeV

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    Pseudorapidity, transverse momentum, and multiplicity distributions are measured in the pseudorapidity range vertical bar eta vertical bar 0.5 GeV in proton-proton collisions at a center-of-mass energy of root s = 13 TeV. Measurements are presented in three different event categories. The most inclusive of the categories corresponds to an inelastic pp data set, while the other two categories are exclusive subsets of the inelastic sample that are either enhanced or depleted in single diffractive dissociation events. The measurements are compared to predictions from Monte Carlo event generators used to describe high-energy hadronic interactions in collider and cosmic-ray physics.Peer reviewe

    Search for heavy resonances in the W/Z-tagged dijet mass spectrum in pp collisions at 7 TeV

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    A search has been made for massive resonances decaying into a quark and a vector boson, qW or qZ, or a pair of vector bosons, WW, WZ, or ZZ, where each vector boson decays to hadronic final states. This search is based on a data sample corresponding to an integrated luminosity of 5.0 fb 121 of proton\u2013proton collisions collected in the CMS experiment at the LHC in 2011 at a center-of-mass energy of 7 TeV. For sufficiently heavy resonances the decay products of each vector boson are merged into a single jet, and the event effectively has a dijet topology. The background from QCD dijet events is reduced using recently developed techniques that resolve jet substructure. A 95% CL lower limit is set on the mass of excited quark resonances decaying into qW (qZ) at 2.38 TeV (2.15 TeV) and upper limits are set on the cross section for resonances decaying to qW, qZ, WW, WZ, or ZZ final states

    Search for long-lived particles in events with photons and missing energy in proton\u2013proton collisions at sqrt(s)=7 TeV

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    Results are presented from a search for long-lived neutralinos decaying into a photon and an invisible particle, a signature associated with gauge-mediated supersymmetry breaking in supersymmetric models. The analysis is based on a 4.9 inverse femtobarn sample of proton-proton collisions at 1as = 7 TeV, collected with the CMS detector at the LHC. The missing transverse energy and the time of arrival of the photon at the electromagnetic calorimeter are used to search for an excess of events over the expected background. No significant excess is observed, and lower limits at the 95% confidence level are obtained on the mass of the lightest neutralino, m(neutralino) > 220 GeV (for c tau 6000 mm (for m(neutralino) < 150 GeV)

    Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at s\sqrt{s} = 7 TeV

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    The energy calibration and resolution of the electromagnetic calorimeter (ECAL) of the CMS detector have been determined using proton-proton collision data from LHC operation in 2010 and 2011 at a centre-of-mass energy of sqrt(s)=7 TeV with integrated luminosities of about 5 inverse femtobarns. Crucial aspects of detector operation, such as the environmental stability, alignment, and synchronization, are presented. The in-situ calibration procedures are discussed in detail and include the maintenance of the calibration in the challenging radiation environment inside the CMS detector. The energy resolution for electrons from Z-boson decays is better than 2% in the central region of the ECAL barrel (for pseudorapidity abs(eta)<0.8) and is 2-5% elsewhere. The derived energy resolution for photons from 125 GeV Higgs boson decays varies across the barrel from 1.1% to 2.6% and from 2.2% to 5% in the entraps. The calibration of the absolute energy is determined from Z to e+e- decays to a precision of 0.4% in the barrel and 0.8% in the endcaps

    Measurement of charged particle spectra in minimum-bias events from proton-proton collisions at √s=13TeV

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    Measurement of charged particle spectra in minimum-bias events from proton-proton collisions at √s=13TeV

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    Search for heavy resonances decaying to tau lepton pairs in proton-proton collisions at root s=13 TeV

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    Search for Higgs and Z boson decays to J/<tex>\psi</tex>orYpairsinthefourmuonfinalstateinprotonprotoncollisionsat<tex>s</tex> or Y pairs in the four-muon final state in proton-proton collisions at <tex>\sqrt{s}</tex>=13 TeV

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    Search for supersymmetry in pp collisions <tex>\sqrt{s}$</tex>=8 TeV in final states with boosted W bosons and b jets using razor variables

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