6 research outputs found

    Test beam performance of a CBC3-based mini-module for the Phase-2 CMS Outer Tracker before and after neutron irradiation

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    The Large Hadron Collider (LHC) at CERN will undergo major upgrades to increase the instantaneous luminosity up to 5–7.5×1034^{34} cm2^{-2}s1^{-1}. This High Luminosity upgrade of the LHC (HL-LHC) will deliver a total of 3000–4000 fb-1 of proton-proton collisions at a center-of-mass energy of 13–14 TeV. To cope with these challenging environmental conditions, the strip tracker of the CMS experiment will be upgraded using modules with two closely-spaced silicon sensors to provide information to include tracking in the Level-1 trigger selection. This paper describes the performance, in a test beam experiment, of the first prototype module based on the final version of the CMS Binary Chip front-end ASIC before and after the module was irradiated with neutrons. Results demonstrate that the prototype module satisfies the requirements, providing efficient tracking information, after being irradiated with a total fluence comparable to the one expected through the lifetime of the experiment

    Observation of four top quark production in proton-proton collisions at √s = 13 TeV

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    They start on the zero-alcohol and they wanna try the real thing : Parents\u27 views on zero-alcohol beverages and their use by adolescents

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    Objective: Zero-alcohol beverages containing 0.0-0.5% alcohol by volume may offer public health benefits if individuals use them to substitute for alcohol-containing products, thereby reducing alcohol use. There are, however, concerns that zero-alcohol beverages may encourage adolescents\u27 earlier interest in alcohol and increase exposure to alcohol company branding. As this poses a challenge for parents, we studied parents\u27 views on zero-alcohol beverages and their provision to adolescents. Methods: We interviewed n=38 parents of 12-17-year-olds and used reflexive thematic analysis to interpret interview data. Results: Parents considered zero-alcohol beverages to be \u27adult beverages\u27 that potentially supported reduced adult drinking but were unnecessary for adolescents. Parents were concerned that adolescent zero-alcohol beverage use could normalise alcohol consumption and be a precursor to alcohol initiation. There was a potential conflict between moderate provision in \u27appropriate\u27 contexts, and potential benefits, which were each supported by some parents. Uncertainty on health qualities was also reported. Conclusions: Parents reported conflicting and cautious views on zero-alcohol beverage provision to adolescents. Implications for public health: As evidence on the impacts of zero-alcohol beverage availability develops, parent-targeted messages highlighting the potential risk of normalisation of alcohol use for young people could be developed, in conjunction with broader policy responses

    A second update on mapping the human genetic architecture of COVID-19

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