Searcharxiv⌕ Search

arXiv subjects

Anne-Sylvie Nicollerat

Publications and source records attributed to Anne-Sylvie Nicollerat.

2 recordsLinked to original sources

Man-made climate change:Facts and fiction

Important issues about climate change are summarized and discussed: A large body of evidence shows that the world climate is getting warmer. Climate models give a consistent explanation of this observation once human-made emissions of greenhouse gases are taken into account. Furthermore, the main source of greenhouse gases comes from the burning of oil, gas and coal, mainly in the industrialized countries. Without any change of behaviour, the possible predicted consequences of this climate change for the coming decades are very disturbing. Today's (in)action's will have long-term consequences for the entire biosphere and the living conditions of many future generations. The combination of the various points related to the climate change leads to a final question: "For how long will Humanity continue to bury its head in the sand?"

physics.soc-ph↗

Z' studies at the LHC: an update

We reanalyse the potential of the LHC to discover new $Z'$ gauge bosons and to discriminate between various theoretical models. Using a fast LHC detector simulation, we have investigated how well the characteristics of $Z'$ bosons from different models can be measured. For this analysis we have combined the information coming from the cross section measurement, which provides also the $Z'$ mass and total width, the forward-backward charge asymmetries on- and off-peak, and the $Z'$ rapidity distribution, which is sensitive to its $u \bar{u}$ and $d \bar{d}$ couplings. We confirm that new $Z'$ bosons can be observed in the process $pp \to Z' \to l^+ l^-$, up to masses of about 5 TeV for an integrated luminosity of 100 fb$^{-1}$. The off- and on-resonance peak forward-backward charge asymmetries $A_{\rm FB}^{l}$ show that interesting statistical accuracies can be obtained up to $Z'$ masses of the order of 2 TeV. We then show how the different experimental observables allow for a diagnosis of the $Z'$ boson and the distinction between the various considered models.

hep-ph↗