10 research outputs found

    Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC

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    This is the pre-print version of the Published Article, which can be accessed from the link below - Copyright @ 2010 Springer VerlagResults on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7 TeV are presented, using data collected with the CMS detector over a broad range of pseudorapidity (eta) and azimuthal angle (phi). Short-range correlations in Delta(eta), which are studied in minimum bias events, are characterized using a simple "independent cluster" parametrization in order to quantify their strength (cluster size) and their extent in eta (cluster decay width). Long-range azimuthal correlations are studied differentially as a function of charged particle multiplicity and particle transverse momentum using a 980 inverse nb data set at 7 TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate transverse momentum of 1-3 GeV/c, 2.0< |Delta(eta)| <4.8 and Delta(phi) near 0. This is the first observation of such a long-range, near-side feature in two-particle correlation functions in pp or p p-bar collisions

    Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV

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    Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC

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    Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7TeV are presented, using data collected with the CMS detector over a broad range of pseudorapidity (eta) and azimuthal angle (phi). Short-range correlations in Delta(eta), which are studied in minimum bias events, are characterized using a simple "independent cluster" parametrization in order to quantify their strength (cluster size) and their extent in eta (cluster decay width). Long-range azimuthal correlations are studied differentially as a function of charged particle multiplicity and particle transverse momentum using a 980 nb(-1) data set at 7TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate p(T) of 1-3 GeV/c, 2.

    ELABORATION OF HAMBURGER ENRICHED WITH CASHEW FIBERS (Anacardium occidentale L.)

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    ELABORATION OF HAMBURGER ENRICHED WITH CASHEW FIBERS (Anacardium occidentale L.) The aim of this study was to develop a cashew fiber-enriched hamburger, characterize the product through physical, chemical and sensory analyses to verify its nutritional characteristics and the product acceptance. In order to determine the amount of residue to be added, prior sensory tests were performed with 10 trained panelists to assess the quality attributes of the product by quantitative descriptive analysis. Three different sample formulations were developed with different amounts of cashew fiber: 20 (F1), 30 (F2) and 50% (F3), respectively. The determination of chemical composition and physicochemical data were performed in triplicate, both in raw and in cooked hamburgers. The sensory evaluation was performed by 48 untrained panelists using multiple comparison test, with a standard P sample (commercial hamburger), and hedonic scale. The product presented good nutritive value, with higher fiber content and lower fat content compared to the traditional hamburger, and results show it is a good source of protein, ash, vitamin C and with high zinc content. It was observed that the addition of 30% of cashew fibers to the hamburger presented better acceptance by the panelists. The Multiple Comparison Test showed that the formulation F2 was considered the most accepted when compared to the standard sample by 43.4% of the panelists. Therefore, it was concluded that increasing the percentage of cashew residue decreased the acceptance of the hamburgers. These results support the technological potential of the cashew residue for the production of products such as hamburger, as well as the possibility of its production and marketing.30231532

    Where are the Brazilian ethnobotanical studies in the Atlantic Forest and Caatinga?

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