26 Sep 2019
For the first time, CMS physicists have measured the production rate of top quark pairs as a function of three experimental observables simultaneously. The new result helps to answer several fundamental questions, among which, the properties of…
21 Sep 2019
For the first time, CMS physicists have investigated an effect called the “running” of the top quark mass, a fundamental quantum effect predicted by the Standard Model. Mass is one of the most complex concepts in fundamental physics, which went…
11 Sep 2019
When the CMS experiment records particle collision events, a large number of unwanted extra collisions overlap in the detector and hide the rare particle collision that is worthwhile studying. CMS physicists have developed a new method that gives…
10 Sep 2019
New algorithms from the Compact Muon Solenoid experiment use the ideas used in mobile phone facial recognition to better understand the collisions at the Large Hadron Collider. One of the most exciting challenges at the Large Hadron Collider is the…
05 Aug 2019
The Bs  meson is a bound state of a strange quark and a beauty antiquark – as such it possesses both beauty and strangeness! For many years, searches for an extremely rare decay of the Bs meson, to a μ+μ-  pair, remained a holy grail of particle…
17 Jul 2019
The CMS collaboration has carried out for the first time a direct search for a Higgs boson decaying into charm quarks, a vital step in understanding the Higgs particle and the Standard Model. The discovery of a Higgs boson by both the ATLAS and CMS…
15 Jul 2019
Not many people know that there is a boson-boson collider hiding in the proton-proton collisions of the Large Hadron Collider. The idea is that during rare occasions other particles such as the photon and gauge bosons W and Z are created by the…
12 Jul 2019
The CMS Collaboration has recently presented an updated search for new invisible particles. The technique capitalizes on the imbalance among the visible particles in a collision that such an object would induce. If dark matter is made of fundamental…
12 Jul 2019
New physics may show up at the LHC in the form of yet unobserved particles which travel inside the detector before decaying, far from the point in space where they were produced. If these particles decay to photons, at CMS we can use the short but…
11 Jul 2019
At the EPS-HEP conference this week the CMS collaboration presents new results of a powerful search that is motivated by a variety of new physics models that predict a signature of a bump in the production of the most frequently produced particles…
07 Jul 2019
The CMS collaboration has recently released new results on how the top quark and Higgs boson interact, and this required a much deeper understanding of the production of top quarks together with bottom quarks.  The two heaviest known elementary…
22 May 2019
The study of dark matter is one of the primary research topics at the CMS experiment. The standard model of particle physics describes the behavior of elementary particles with incredible accuracy but provides no explanation or possible particle…