1,005 research outputs found

    Muon g-2: Theory overview

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    n this talk I reviewed the theoretical calculation of the anomalous magnetic moment of the muon in the Standard Model mainly as it has been presented in the White Paper, as well as the most recent developments on the data-driven side, but in particular for what concerns lattice calculations of hadronic vacuum polarization and hadronic light-by-light. All this is presented in the light of the new measurement of (g−2)μ recently released by the Fermilab experiment, which led to an increase of the discrepancy with the Standard Model from 3.7 to 4.2σ

    Data-driven approaches to the evaluation of hadronic contributions to the (

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    In this talk I reviewed the data-driven theoretical calculation of the hadronic contributions to the anomalous magnetic moment of the muon in the Standard Model mainly as it has been presented in the White Paper, but also including the most recent developments. All this is presented in the light of the new measurement of (g − 2)μ recently released by the Fermilab experiment, which led to an increase of the discrepancy with the Standard Model from 3.7 to 4.2σ

    El Tlacuache Núm. 442 (2010). 442 Año 10 (2010) noviembre. El Tlacuache

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    Ironías en la historia de las ideas De diestros y siniestros por Fanny Campillo. -Tesis en torno a la autonomía de los pueblos indios por Gilberto López y Rivas

    FLAG phase 2: Status and prospects

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    In this talk I presented the FLAG initiative, discussed the history of the project, its aim and scope. After completing the first review in 2010, we decided to extend the review to more quantities and to involve a larger group of people. I have illustrated the phase 2 of the project, its new structure and the schedule for the release of the next review

    El Tlacuache Núm. 388 (2009). 388 Año 9 (2009) noviembre. El Tlacuache

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    El impacto de la Revolución Cubana en América Latinatados por Gilberto López y Rivas. - Del Tlalocan: uno de los reinos de los muertos por Isabel Garza Gómez

    Cultura e sociedade em Gilberto Freyre

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    RESUMO O autor se propõe identificar as matrizes teóricas do pensamento de Gilberto Freyre. Comenta a influência de Herbert Spencer, Oliveira Lima e Franz Boas – registrada pelo próprio Gilberto Freyre – e detém-se na análise das marcas provenientes do contato daquele sociólogo com a chamada Escola de Chicago. Para o autor, a influência de Robert E. Park e William I. Thomas é decisiva na formação da abordagem pessoal de Gilberto Freyre. O autor detém-se, também, na identificação das afinidades de Gilberto Freyre com as abordagens de Max Weber, George Simmel e a chamada “Escola dos Annales”. ABSTRACT Culture and society in Gilberto Freyre. v. 19, n. 2, p. 311-326, jul./dez. 1991 The author proposes to identify the thoeretical origins of Gilberto Freyre’s thinking. He comments on the influence of Herbert Spencer, Oliveira Lima and Franz Boas – registred by Gilberto Freyre himself – and analyses in greater detail the influence originating in Freyre’s contact with the “Chicago School”. For the author, the influence of Robert E. Park and William I. Thomas is decisive in forming the personal approach of Gilberto Freyre. The author also considers Freyre’s rapport with the approaches of Max Weber, George Simmel and the so-called “School of the Annales”. RESUMÉ Culture et société vues par Gilberto Freyre. v. 19, n. 2, p. 311-326, jul./dez. 1991 L’auteur se propose tout d’abord d’identifier les matrices théoriques de la pensée de Gilberto Freyre. Dans ce but, il sougline l’influence de Herbert Spencer, de Oliveira Lima et de Franz Boas – reconnue para Gilberto Freyre lui-même – et analyse les marques laissées par ses contacts avec “L’École de Chicago”. Selon l’auteur, l’influence de Robert E. Park et de William I. Thomas a été fondalementale pour la formation de Gilberto Freyre. Le travail se ferme en montrant l’identification des idées de Gilberto Freyre avec celles de Max Weber, de Georg Simmel et de “l’Ecole des Annales”

    Pion loops in quenched quantum chromodynamics

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    We calculate the divergences of the generating functional of quenched Chiral Perturbation Theory to one loop for a generic number of flavours. The flavour number dependence of our result enlightens the mechanism of quark loop cancellation in the quenched effective theory for any Green function or S matrix element. We also apply our results to ππ scattering and evaluate the coefficient of the chiral log in the S-wave scattering lengths for the quenched case.
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