Heavy-flavor suppression and azimuthal anisotropy in Pb-Pb collisions at sqrt(s_{NN}) = 2.76 TeV with the ALICE detector

Heavy-flavor hadron production studies in Pb-Pb collisions at sqrt(s_{NN}) = 2.76 TeV with the 2010 and 2011 data samples are presented. The measurements are performed with the ALICE detector in various decay channels and in a wide kinematic range. Heavy-flavor hadrons exhibit a suppression in the most central Pb-Pb collisions that amounts to a factor 3-5 for pT ~ 8-10 GeV/c. The second harmonic of the azimuthal distribution Fourier decomposition, v2, is non-zero for non-central collisions at intermediate pT (~3 GeV/c).Comment: Quark Matter 2012 proceeding

Open Heavy Flavor Production in p-p and Pb-Pb collisions as seen by ALICE at the LHC

Charm and beauty production are probed with the ALICE experiment at the LHC by studying the single lepton transverse momentum distribution (electrons at mid-rapidity, muons at large-rapidities) and D mesons reconstructed in their hadronic decays. The differential production cross sections in proton proton interactions show a good agreement with perturbative QCD calculations at both sqrt(s) = 2.76 and 7 TeV. The measurements in lead lead reactions at sqrt(s_{NN})= 2.76 TeV evidence a reduction (or suppression) of the production rate at intermediate and high pt in the most central collisions with respect to the rate in proton proton interactions.Comment: To appear in the Proceedings of the 19th Particles and Nuclei International Conference, PANIC 201

Electroweak boson detection in the ALICE muon spectrometer

The ALICE capabilities for W and Z detection at LHC are discussed. The contributions to single muon transverse momentum distribution are evaluated. The expected performance of the muon spectrometer for detecting W and Z bosons via their muonic decay is presented. Possible application for the study of in-medium effects in ultrarelativistic heavy ion collisions is discussed.The ALICE capabilities for W and Z detection at LHC are discussed. The contributions to single muon transverse momentum distribution are evaluated. The expected performance of the muon spectrometer for detecting W and Z bosons via their muonic decay is presented. Possible application for the study of in-medium effects in ultrarelativistic heavy ion collisions is discussed

Preparation for heavy-flavour measurements with ALICE at the LHC

ALICE will study nucleus-nucleus and proton-proton collisions at the LHC. The main goal of the experiment is to investigate the properties of QCD matter at the extreme energy densities that will be reached in Pb-Pb collisions. Heavy quarks (charm and beauty) are regarded as powerful tools for this study. After briefly reviewing the ALICE heavy-flavour program, we will describe the preparation for the first measurements to be performed with pp collisions.Comment: 4 pages, 2 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennesse

Open-beauty production in ppPb collisions at sNN\sqrt{s_{NN}}=5 TeV: effect of the gluon nuclear densities

We present our results on open beauty production in proton-nucleus collisions for the recent LHC $p$Pb run at $\sqrt{s_{NN}}$=5 TeV. We have analysed the effect of the modification of the gluon PDFs in nucleus at the level of the nuclear modification factor. Because of the absence of measurement in $pp$ collisions at the same energy, we also propose the study of the forward-to-backward yield ratio in which the unknown proton-proton yield cancel. Our results are compared with the data obtained by LHCb collaboration and show a good agreement.Comment: 6 pages, 3 figures, Proceedings IS2013 submitted to Nuclear Physics

Vector bosons in heavy-ion collisions at the LHC

Vector bosons become accessible experimental probes in heavy-ion collisions at the LHC. The capabilities of the LHC experiments to perform their measurement are outlined. The focus is given to their utility to study the possible formation and properties of the Quark Gluon Plasma (QGP) in the most central heavy-ion collisions. Their own sensitivity (if any) to the QGP is discussed. Their interest as references to observe multiple QGP sensitive probes is justified.Comment: HP2008 proceedings, to appear in Eur.Phys.J.

Phenomenological interpolation of the inclusive J/psi cross section to proton-proton collisions at 2.76 TeV and 5.5 TeV

We present a study of the inclusive J/psi cross section at 2.76 TeV and 5.5 TeV. The energy dependence of the cross section, rapidity and transverse momentum distributions are evaluated phenomenologically. Their knowledge is crucial as a reference for the interpretation of A-A and p-A J/psi results at the LHC. Our approach is the following: first, we estimate the energy evolution of the pt-integrated J/psi cross section at mid-rapidity; then, we evaluate the rapidity dependence; finally, we study the transverse momentum distribution trend. Whenever possible, both theory driven (based on pQCD predictions) and functional form (data driven fits) calculations are discussed. Our predictions are compared with the recently obtained results by the ALICE collaboration in pp collisions at 2.76 TeV.Comment: 23 pages, 19 figures, updated text+figures, added comparison to ALICE measurements at 2.76Te

Jpsi and dielectron photoproduction measurements with PHENIX

Jpsi and dielectron photoproduction measurements in ultra-peripheral Au+Au collisions at 200 GeV with the PHENIX experiment are presented. The triggered events correspond to those accompanied with forward neutron emission from the Au dissociation. Jpsi and high-mass dielectron cross sections and pT distributions are consistent with various theoretical calculations.Comment: 4 pages, figures updated - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennesse

Proyecto de convivencia para niños de familias desestructuradas: Una experiencia estival en onda

Vuitenes Jornades de Foment de la Investigació de la FCHS (Any 2002-2003)Este “proyecto de convivencia para niños de familias desestructuradas: una experiencia estival en Onda” surge por la necesidad de intervenir en la resolución de los problemas y necesidades educativas de una comunidad. Como su título indica, va dirigido a niños procedentes de ambientes familiares desestructurados, con bajos niveles socio-económico y culturales con residencia en la localidad castellonense de Onda. Concretamente, el grupo escogido se compone por 60 niños (30 niños y 30 niñas) con edades de 6 a 14 años (entre 1º de Primaria y 2º de ESO) Los objetivos generales del proyecto son los siguientes: 1-Adquirir habilidades de convivencia. Interaccionar con iguales; Aprender a dialogar y a respetar; Fomentar actividades cooperativas. Transmitir normas y valores. 2-Adquirir hábitos de higiene. Lavarse los dientes. Ducharse, peinarse y asearse. Utilizar los cubiertos. Comportarse en la mesa. Enseñar a pedir y agradecer. 3-Adquirir habilidades de control emocional. Desarrollar habilidades comunicativas. Generar alternativas. Pedir disculpas. Respetar derechos propios. La finalidad que persigue el proyecto a través de la realización de estas colonias de verano es no es que los alumnos aprendan las disciplinas sino que el conocimiento que éstas puedan aportar les sirva para reconstruir sus formas de pensar, sentir y de actuar, con la intención de reconstruir los conocimientos vitales que cada uno ha ido construyendo en su contexto y que esto les ayude a ser más capaces y competentes en la superación de los retos y problemas que les plantea el mundo que les ha tocado vivir