1,621 research outputs found

    Knowledge and level of understanding of the Chécate, Mídete, Muévete campaign in Mexican adults

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    Objective. To evaluate the knowledge and comprehension level of the Chécate, Mídete, Muévete campaign and its associ­ated characteristics in Mexican adult population. Materials and methods. Based on the Mexican Halfway National Health and Nutrition Survey 2016, we obtained information about the knowledge and comprehension of the logo and messages that support the Chécate, Mídete, Muévete campaign. To identify the associated characteristics, we proved logistic and linear regression models and the variable contrast ef­fects are shown. Results. 11% of the interviewed adults knew the Chécate, Mídete, Muévete campaign, 31% had a high comprehension of it and 1% did not comprehend it at all. The associated characteristics with knowledge were gender, scholarship, health service and overweight or obesity. Age, scholarship and socioeconomic status were associated to comprehension. Conclusion. These results provide new information about one of the Mexican efforts to control the overweight, obesity and diabetes epidemic

    Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

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    The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum
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