Top quark physics at the LHC

The Large Hadron Collider (LHC) will provide a huge amount of top-antitop events, making the LHC a top quark factory, producing 1 tt pair per second at a luminosity of 10^33cm-2s-1. A large top quark sample will be available from the start of LHC and will play an important role in commissioning the CMS and ATLAS detectors. An overview of the top quark measurements during the first data-taking period is given

Would empowering women initiate the demographic transition in least-developing countries ?

We examine the pathways by which gender inequality affects fertility and hampers growth. We introduce several dimensions of gender inequality into a 2-sex OLG model with a non-unitary representation of household decision-making. We characterize a Malthusian corner regime which is characterized by strong gender inequality in education and high fertility. We find both in theory and in the data that reducing the social and institutional gender gap does not help to escape from this regime while reducing the wage gender gap lowers fertility only in countries which have already escapted from it. The key policies to ease out the countries in the Malthusian regime are to promote mother’s longevity and to curb infant mortality. In the interior regime, parents consider the imapct of their children education on the expected intra-household bargaining position in their future couple. Education could thus compensate against the institutional and social gender gap that skills exists in developed countries.gender gap, fertility, education, household bargaining.

Would empowering women initiate the demographic transition in least-developed countries?

We examine the pathways by which gender inequality affects fertility and hampers growth. We introduce several dimensions of gender inequality into a 2-sex OLG model with a non-unitary representation of household decision-making. We characterize a Malthusian corner regime which is characterized by strong gender inequality in education and high fertility. We find both in theory and in the data that reducing the social and institutional gender gap does not help to escape from this regime while reducing the wage gender gap lowers fertility only in countries which have already escaped from it. The key policies to ease out the countries in the Malthusian regime are to promote mother's longevity and to curb infant mortality. In the interior regime, parents consider the impact of their children education on the expected intra-household bargaining position in their future couple. Education could thus compensate against the institutional and social gender gap that still exists in developed countries.gender gap, fertility, education, household bargaining.

High energy photon interactions at the LHC

Experimental prospects for studying high-energy photon-photon and photon-proton interactions at the CERN Large Hadron Collider (LHC) are discussed. Cross sections are calculated for many electroweak and beyond the Standard Model processes. Selection strategies based on photon interaction tagging techniques are studied. Assuming a typical LHC multipurpose detector, various signals and their irreducible backgrounds are presented after applying acceptance cuts. Prospects are discussed for the Higgs boson search, detection of supersymmetric particles and of anomalous quartic gauge couplings, as well as for the top quark physics.Comment: 17 pages, 16 tables and 14 figure

Presence of the ABCB1 (MDR1) deletion mutation causing ivermectin hypersensitivity in certain dog breeds in Belgium

Hypersensitivity to ivermectin and certain other drugs in Collies and related breeds is caused by a 4-base pair deletion mutation in the ABCB1 gene, better known as the MDR1 gene, encoding P-glycoprotein. There is no information available, however, regarding the presence of this mutation in dogs in Belgium. In this study, the ABCB1 genotype was assessed in 92 dogs of breeds suspected to possess the deletion mutation. The results indicated that the mutation was present in the Australian Shepherd, Collie, Shetland Sheepdog and Swiss White Shepherd, but was not detected in the Bearded Collies, Border Collies and German Shepherds of this study, which is in accordance with the findings in similar breed populations of other countries. In Belgium it is therefore important to take the ABCB1 genotype of the breeds involved into account, in order to use drugs in a safe and efficient manner and to improve the selection procedure in dog breeding

Large outburst of comet 73P/Schwassmann-Wachmann 3

We report about a large outburst of the Jupiter family-comet 73P/SW-3 that happened between September 30 and October 5 UT 2022, about 40 days after its perihelion