Higgs update 4 July
Both the ATLAS and CMS experiments have observed a new fundamental particle consistent with the long-sought Higgs boson. Now the exciting work of understanding its significance begins.
Content relevant to the Higgs boson
Both the ATLAS and CMS experiments have observed a new fundamental particle consistent with the long-sought Higgs boson. Now the exciting work of understanding its significance begins.
Cette note s'inspire d'un article que prépare le Comité des directives scientifiques du CERN pour apporter aux membres du Conseil du CERN des informations de base sur la signification scientifique des éventuelles zones d'exclusion du boson de Higgs du modèle standard attendues avant la conférence EPS-HEP de juillet 2011. Les italiques signalent des détails plus techniques.
This is from a paper prepared by the CERN Scientific Policy Committee to provide background information for members of CERN Council on the scientific significance of the possible exclusion regions for the Standard Model Higgs boson expected by the time of the 2011 EPS-HEP conference in July 2011. Italic font indicates more technical details.
Background
When scientists search for new physics, they compare what they observe to what theories predict they will observe. The background is the set of results scientists expect to see. If an experiment sees more instances of a certain type of event (see “Excess”) than they expect to see as part of the background, it might be evidence of new physics.
La recherche du boson de Higgs conduit la physique des particules à l’aube d’une ère nouvelle.
The search for the Higgs boson puts particle physics on the threshold of a new era.
Le Modèle standard arrive à décrire toutes les particules élémentaires connues et la façon dont elles interagissent les unes avec les autres. Mais notre compréhension de la nature est incomplète. En particulier, le Modèle standard ne répond pas à une question simple : Pourquoi la plupart des particules élémentaires ont-elles une masse ?
The Standard Model successfully describes all of the elementary particles we know to exist and how they interact with one another. But our understanding of nature is incomplete. In particular, the Standard Model cannot answer one basic question: Why do most of these elementary particles have masses?