Browsing IGFAEArtigos by Title
Now showing items 1433 of 290

Causality constraints on corrections to the graviton threepoint coupling
(Springer, 20160203)We consider higher derivative corrections to the graviton threepoint coupling within a weakly coupled theory of gravity. Lorentz invariance allows further structures beyond the one present in the Einstein theory. We ... 
Cavitation effects on the confinement/deconfinement transition
(Elsevier, 2014)Cavitation is a process where the viscous terms in a relativistic fluid result in reducing the effective pressure, thus facilitating the nucleation of bubbles of a stable phase. The effect is particularly pronounced in ... 
Central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at √s=13 TeV
(Springer, 2018)Measurements are reported of the central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at a centreofmass energy of 13 TeV. Backgrounds are significantly reduced compared to previous measurements made at ... 
Centrality dependence of charged jet production in p–Pb collisions at √sNN= 5.02 TeV
(Springer, 2016)Measurements of charged jet production as a function of centrality are presented for p–Pb collisions recorded at √ sNN = 5.02TeVwith theALICEdetector.Centrality classes are determined via the energy deposit in ... 
Centrality dependence of inclusive J/ψ production in pPb collisions at √sNN =5.02 TeV
(Springer, 2015)We present a measurement of inclusive J=ψ production in pPb collisions at √ sNN = 5:02TeV as a function of the centrality of the collision, as estimated from the energy deposited in the Zero Degree Calorimeters. The ... 
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at √sNN=5.02 TeV
(Elsevier, 2017)We present the chargedparticle pseudorapidity density in Pb–Pb collisions at √sNN=5.02TeVin centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5to 5, which is sufficient for ... 
Centrality dependence of ψ(2S) suppression in pPb collisions at √sNN=5.02 TeV
(Springer, 2016)The inclusive production of the (2S) charmonium state was studied as a function of centrality in pPb collisions at the nucleonnucleon center of mass energy √sNN = 5.02TeV at the CERN LHC. The measurement was performed ... 
Centrality, rapidity and transverse momentum dependence of J/ψsuppression in Pb–Pb collisions at √sNN=2.76TeV
(Elsevier, 2014)The inclusive J/ψnuclear modification factor (RAA) in Pb–Pb collisions at √sNN=2.76TeVhas been measured by ALICE as a function of centrality in the e+e−decay channel at midrapidity (y <0.8) and as a function of centrality, ... 
CGC beyond eikonal accuracy: finite width target effects
(EDP Sciences, 20160321)We present a method to systematically include the corrections to the eikonal approximation that are associated with the finite width of the target. The retarded gluon propagator in background field is calculated at ... 
Chargedparticle multiplicity distributions over a wide pseudorapidity range in protonproton collisions at √s= 0.9, 7, and 8 TeV
(Springer, 2017)We present the chargedparticle multiplicity distributions over a wide pseudorapidity range (−3.4<η<5.0) for pp collisions at √s=0.9,7, and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector ... 
Charmonium dissociation and recombination at LHC: revisiting comovers
(Elsevier, 2014)We present our results on charmonium production at the Large Hadron Collider energies within the comover interaction model. The formalism includes both comover dissociation of J/ψ’s and possible secondary J/ψ production ... 
Coherent ρ 0 photoproduction in ultraperipheral PbPb collisions at √sNN=2.76 TeV
(Springer, 2015)We report the first measurement at the LHC of coherent photoproduction of ρ 0 mesons in ultraperipheral PbPb collisions. The invariant mass and transverse momentum distributions for ρ 0 production are studied in the ... 
Coherent ψ(2S) photoproduction in ultraperipheral Pb–Pb collisions at √sNN=2.76 TeV
(Elsevier, 2015)We have performed the first measurement of the coherent ψ(2S)photoproduction cross section in ultraperipheral Pb–Pb collisions at the LHC. This charmonium excited state is reconstructed via the ψ(2S) →l+l−and ψ(2S) ... 
Cold holographic matter in the Higgs branch
(Elsevier, 2015)We study collective excitations of cold (2 +1)dimensional fundamental matter living on a defect of the fourdimensional N=4super Yang–Mills theory in the Higgs branch. This system is realized holographically as a D3–D5 ... 
Collapse and revival in holographic quenches
(Springer, 2015)We study holographic models related to global quantum quenches in finite size systems. The holographic set up describes naturally a CFT, which we consider on a circle and a sphere. The enhanced symmetry of the conformal ... 
Color coherence in a heavy quark antenna radiating gluons inside a QCD medium
(Elsevier, 2014)We compute the color coherence effects for soft gluon radiation off antennas containing heavy quarks in the presence of a QCD medium – the actual calculations is made for a triplet configuration and then generalize to both ... 
Compactifications of the KlebanovWitten CFT and new AdS3 backgrounds
(Springer, 2015)In this paper we find various new backgrounds in Type IIB, IIA and Mtheory with an AdS3factor. The solutions are smooth and preserve small amounts of SUSY. These new backgrounds are found by application of nonAbelian ... 
Constraining the magnitude of the Chiral Magnetic Effect with Event Shape Engineering in Pb–Pb collisions at √sNN=2.76 TeV
(Elsevier, 2018)In ultrarelativistic heavyion collisions, the eventbyevent variation of the elliptic flow v2reflects fluctuations in the shape of the initial state of the system. This allows to select events with the same centrality ... 
Correlations and the ridge in the Color Glass Condensate beyond the glasma graph approximation
(Springer, 2018)We consider twogluon production in dilutedense collisions within the Color Glass Condensate framework, applicable to both protonnucleus and heavylight ion collisions. We go beyond the glasma graph approximation which ... 
D3–D5 theories with unquenched flavors
(Elsevier, 2017)We construct the string duals of the defect theories generated when Nfflavor D5branes intersect Nccolor D3branes along a 2 +1dimensional subspace. We work in the Veneziano limit in which Ncand Nfare large and Nf/Ncis ...