Underlying Event measurements in pp collisions at root s=0.9 and 7 TeV with the ALICE experiment at the LHC

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)We present measurements of Underlying Event observables in pp collisions at root s = 0 : 9 and 7 TeV. The analysis is performed as a function of the highest charged-particle transverse momentum p(T),L-T in the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different p(T) thresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2-3 between the lower and higher collision energies, depending on the track p(T) threshold considered. Data are compared to PYTHIA 6.4, PYTHIA 8.1 and PHOJET. On average, all models considered underestimate the multiplicity and summed p(T) in the Transverse region by about 10-30%.7Calouste Gulbenkian Foundation from LisbonSwiss Fonds Kidagan, ArmeniaConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Financiadora de Estudos e Projetos (FINEP)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)National Natural Science Foundation of China (NSFC)Chinese Ministry of Education (CMOE)Ministry of Science and Technology of China (MSTC)Ministry of Education and Youth of the Czech RepublicDanish Natural Science Research CouncilCarlsberg FoundationDanish National Research FoundationEuropean Research Council under European CommunityHelsinki Institute of PhysicsAcademy of FinlandFrench CNRS-IN2P3Region Pays de LoireRegion AlsaceRegion AuvergneCEA, FranceGerman BMBFHelmholtz AssociationGeneral Secretariat for Research and Technology, Ministry of Development, GreeceHungarian OTKANational Office for Research and Technology (NKTH)Department of Atomic EnergyDepartment of Science and Technology of the Government of IndiaIstituto Nazionale di Fisica Nucleare (INFN) of ItalyMEXT, JapanJoint Institute for Nuclear Research, DubnaNational Research Foundation of Korea (NRF)CONACYTDGAPA, MexicoALFA-ECHELEN Program (High-Energy physics Latin-American-European Network)Stichting voor Fundamenteel Onderzoek der Materie (FOM)Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), NetherlandsResearch Council of Norway (NFR)Polish Ministry of Science and Higher EducationNational Authority for Scientific Research - NASR (Autoritatea Nationala pentru Cercetare Stiintifica - ANCS)Federal Agency of Science of the Ministry of Education and Science of Russian FederationInternational Science and Technology Center, Russian Academy of SciencesRussian Federal Agency of Atomic EnergyRussian Federal Agency for Science and InnovationsCERN-INTASMinistry of Education of SlovakiaDepartment of Science and Technology, South AfricaCIEMATEELAMinisterio de Educacion y Ciencia of SpainXunta de Galicia (Conselleria de Educacion)CEADENCubaenergia, CubaIAEA (International Atomic Energy Agency)Swedish Reseach Council (VR)Knut & Alice Wallenberg Foundation (KAW)Ukraine Ministry of Education and ScienceUnited Kingdom Science and Technology Facilities Council (STFC)The United States Department of EnergyUnited States National Science FoundationState of TexasState of OhioFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Measurement of charm production at central rapidity in proton-proton collisions at s\sqrt{s} = 2.76 TeV

The pt-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D0, D+, and D*+ in the rapidity range |y| K- pi+, D+ -> K- pi+ pi+, D*+ -> D0 pi+, and their charge conjugates, and was performed on a L_int = 1.1 nb^-1 event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at sqrt(s)= 2.76 TeV and at 7 TeV was evaluated by extrapolating to the full phase space the pt-differential production cross sections at sqrt(s) = 2.76 TeV and our previous measurements at sqrt(s) = 7 TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of c dbar D mesons produced in a vector state was also determined.The $p_{\rm T}$-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D$^0$, D$^+$, and D$^{*+}$ in the rapidity range $|y|<0.5$, and for transverse momentum $1< p_{\rm T} <12$ GeV/$c$, were measured in proton-proton collisions at $\sqrt{s} = 2.76$ TeV with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays D$^0 \rightarrow$K$\pi$, D$^+ \rightarrow$K$\pi\pi$, D$^{*+} \rightarrow$D$^0\pi$, and their charge conjugates, and was performed on a $L_{\rm int} = 1.1$ nb$^{-1}$ event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at $\sqrt{s} = 2.76$ TeV and at 7 TeV was evaluated by extrapolating to the full phase space the $p_{\rm T}$-differential production cross sections at $\sqrt{s} = 2.76$ TeV and our previous measurements at $\sqrt{s} = 7$ TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of cdbar D mesons produced in a vector state was also determined

Underlying Event measurements in pp collisions at s=0.9 \sqrt {s} = 0.9 and 7 TeV with the ALICE experiment at the LHC

We present measurements of Underlying Event observables in pp collisions at s√=0.9 and 7TeV. The analysis is performed as a function of the highest charged-particle transverse momentum p T,LT in the event. Different regions are defined with respect to the azimuthal direction of the leading (highest transverse momentum) track: Toward, Transverse and Away. The Toward and Away regions collect the fragmentation products of the hardest partonic interaction. The Transverse region is expected to be most sensitive to the Underlying Event activity. The study is performed with charged particles above three different p T thresholds: 0.15, 0.5 and 1.0 GeV/c. In the Transverse region we observe an increase in the multiplicity of a factor 2–3 between the lower and higher collision energies, depending on the track p T threshold considered. Data are compared to Pythia 6.4, Pythia 8.1 and Phojet. On average, all models considered underestimate the multiplicity and summed p T in the Transverse region by about 10–30%

Measurement of the Cross Section for Electromagnetic Dissociation with Neutron Emission in Pb-Pb Collisions at √sNN = 2.76 TeV

The first measurement of neutron emission in electromagnetic dissociation of 208Pb nuclei at the LHC is presented. The measurement is performed using the neutron Zero Degree Calorimeters of the ALICE experiment, which detect neutral particles close to beam rapidity. The measured cross sections of single and mutual electromagnetic dissociation of Pb nuclei at √sNN = 2.76 TeV with neutron emission are σ_single EMD = 187.2±0.2 (stat.) +13.8−12.0 (syst.) b and σ_mutual EMD = 6.2 ± 0.1 (stat.) ±0.4 (syst.) b respectively. The experimental results are compared to the predictions from a relativistic electromagnetic dissociation model.The first measurement of neutron emission in electromagnetic dissociation of $^{208}$Pb nuclei at the LHC is presented. The measurement is performed using the neutron Zero Degree Calorimeters of the ALICE experiment, which detect neutral particles close to beam rapidity. The measured cross sections of single and mutual electromagnetic dissociation of Pb nuclei at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with neutron emission are $\sigma_{\rm single\ EMD} = 187.4\pm0.2$ (stat.) $^{+13.2} _{-11.2}$ (syst.) b and $\sigma_{\rm mutual\ EMD} = 5.7\pm0.1$ (stat.) $\pm$0.4 (syst.) b, respectively. The experimental results are compared to the predictions from a relativistic electromagnetic dissociation model

Fatores de personalidade e evolu??o cl?nica em pacientes transplantados de rim

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS ([email protected]) on 2015-10-28T22:00:26Z No. of bitstreams: 1 475925 - Texto Completo.pdf: 4376108 bytes, checksum: 6bf0771ea7aea9aa52f43e4e367e7bab (MD5)Made available in DSpace on 2015-10-28T22:00:26Z (GMT). No. of bitstreams: 1 475925 - Texto Completo.pdf: 4376108 bytes, checksum: 6bf0771ea7aea9aa52f43e4e367e7bab (MD5) Previous issue date: 2015-08-31Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPESConselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPqThe relationship between personality and health is frequently studied in scientific research. This study aimed to investigate the clinical/biochemical course of kidney transplant patients and its relationship with personality traits in the 3rd, 6th and 9th month after transplantation. Participants were 114 kidney transplant patients, 68 men and 46 women, with an average age of 47.72 years (SD=11.4). Personality was assessed using the Brazilian Factorial Personality Inventory (BFP). Patient charts were used to record clinical/biochemical variables over nine months following transplantation (hypertension, acute rejection, graft loss, death, creatinine and estimated glomerular filtration rate/eGFR). In addition to sociodemographic variables, information was also collected on transfusions prior to transplantation and panel reactive antibodies (HLA I and II).Two groups with personality types were differentiated by psychological characteristics (hierarchical cluster analysis): Cluster 1- average Neuroticism, high Surgency, Agreeableness and Conscientiousness, and low Openness; Cluster 2- high Neuroticism, average Surgency and Agreeableness, average Conscientiousness and low Openness. There was no statistically significant difference between the two clusters in terms of hypertension, acute infection, graft loss, death and HLA I and II panel reactive antibodies. Creatinine levels, eGFR and transfusions were associated with personality types. Cluster 1 contained significantly higher creatinine levels than Cluster 2 and these remained high on all three assessment occasions, with transfusion prior to transplantation less frequent in this group. Cluster 1 exhibited a slight decrease in average eGFR over time, with an increase observed in cluster 2. In individual analyses, Neuroticism was higher in patients with lower schooling levels (p=0.002) and exhibited a significant positive correlation with average eGFR (r=0.250; p=0.008). Agreeableness was significantly higher in men patients (p<0.001) and those without infection (p=0.050). Agreeableness also showed a significant positive correlation with average creatinine levels (r= 0.250; p= 0.007) and a negative association with eGFR (r=-0.208; p=0.027). Higher levels of Conscientiousness were observed in participants with children (p=0.026) not taking medication for depression (p=0.033), as well as a positive correlation with HLA I panel reactive antibodies (r=0.223; p=0.018). In relation to Openness, the only statistically significant difference identified was in relation to schooling, with higher average values found among participants who had completed higher education (p=0.037). The results suggest that personality traits may be associated with transplant results. Monitoring these patients over a longer period may provide a better understanding of the relationship between personality traits and clinical course during the posttransplant period.A rela??o entre personalidade e sa?de tem sido objeto de estudo frequente em pesquisas cient?ficas. Este estudo teve como objetivo principal investigar a evolu??o cl?nica/laboratorial de pacientes transplantados de rim e sua rela??o com tra?os de personalidade no 30, 60 e 90 m?s ap?s o transplante. Participaram do estudo 114 pacientes transplantados renais, 68 homens e 46 mulheres, com idade m?dia de 47,72 anos (DP=11,4). Para a avalia??o da personalidade foi utilizada a Bateria Fatorial de Personalidade (BFP). A partir dos prontu?rios, foram registradas as vari?veis cl?nicas/laboratoriais ao longo de nove meses ap?s o transplante (hipertens?o arterial (HA), rejei??o aguda, infec??o, perda do enxerto, ?bito, creatinina e taxa de filtra??o glomerular estimada/ TFGe). Al?m das vari?veis sociodemogr?ficas, coletaram-se ainda informa??es sobre as transfus?es pr?vias ao transplante e Painel de ant?genos HLA (classe I e II). Dois grupos com perfis de personalidade foram diferenciados pelas caracter?sticas psicol?gicas (an?lise de cluster hierarquizado): Cluster 1- Neuroticismo m?dio, Extrovers?o, Socializa??o e Realiza??o altos e Abertura baixo; Cluster 2- Neuroticismo alto, Extrovers?o, Socializa??o, Realiza??o m?dio e Abertura baixo. Para HA, rejei??o aguda, infec??o, perda do enxerto, ?bito e Painel de ant?genos HLA, classe I e II n?o houve diferen?a estatisticamente significativa entre os dois Clusters. Os n?veis de creatinina, TFGe e transfus?es tiveram associa??o com os perfis de personalidade. Verificou-se que o Cluster 1 concentrou n?veis de creatinina significativamente mais altos que o Cluster 2 e que se mantiveram mais elevados nos tr?s momentos de avalia??o, sendo a transfus?o pr?via ao transplante menos frequente neste grupo. No Cluster 1 ocorreu leve redu??o da m?dia de TFGe ao longo do tempo, enquanto que no Cluster 2 houve aumento. Nas an?lises individuais, Neuroticismo apresentou m?dias mais elevadas nos pacientes com menor escolaridade (p=0,002) e correla??o significativa e positiva com a m?dia de TFGe (r=0,250; p=0,008). O fator Socializa??o apresentou m?dias significativamente mais elevadas nos pacientes homens (p<0,001) e em pacientes sem infe??o (p=0,050). Al?m disto, o fator Socializa??o indicou correla??o significativa positiva com a m?dia de creatinina (r= 0,250; p= 0,007) e negativa com TFGe (r=-0,208; p=0,027). O fator Realiza??o apontou n?veis mais altos nos participantes com filhos (p=0,026) e sem uso de medica??es para depress?o (p=0,033), al?m de correla??o positiva com Reatividade contra painel de ant?genos HLA I (r=0,223; p=0,018). No fator Abertura a ?nica diferen?a estat?stica significativa identificada foi em rela??o ? escolaridade que apontou maiores m?dias nos investigados com Ensino Superior (p=0,037). Os resultados sugerem que as caracter?sticas de personalidade podem estar associadas aos resultados do transplante O acompanhamento destes pacientes durante um per?odo maior poder? levar a um melhor entendimento da rela??o entre fatores de personalidade e evolu??o cl?nica no per?odo p?s-transplante