High energy heavy-ion collisions provide a unique opportunity to study one of the four forces of nature, the strong force, under extreme conditions. A new result from the CMS experiment shapes our understanding of the strong interaction and further…

Electromagnetic interactions govern everyday life: You see an object when particles of light deposit energy on the retinas in your eyes. Our sense of touch results from the exchange of the same particles, the photons, between the atoms in our skin…

In the Standard Model of particle physics, at least one Higgs boson is needed to explain fundamental particles’ masses. There is, however, no reason why there needs to be exactly one. On the contrary, many theories of physics beyond the Standard…

The standard model of particle physics encapsulates our current knowledge of elementary particles and their interactions. The standard model is not complete; for example, it does not describe observations such as gravity, has no prediction for dark…

Quantum Chromodynamics (QCD) is the part of the Standard Model of Particle Physics that describes the strong interaction. At relatively low energies, the Constituent Quark Model is a phenomenologically successful effective method to describe…

  Fundamental particles are the most basic building blocks of the universe. It took more than 60 years to formulate a physical model to explain their interactions fully. This model is now known as the Standard Model of particle physics. Many of…

Congratulations to CMS members who have received the CMS Award for 2020!  As is the tradition, every year during the February CMS week, members of the CMS collaboration are presented with awards for their incredible contributions and dedication…

As for any other instrument, the CMS experiment needs a “quiet” environment to take data, with the lowest level of background noise. In the CMS detector, background noise is mainly due to energetic particles generated at high eta (i.e. close to the…

Physicists continue to question if the particles we know of are the most fundamental. A new result by the CMS collaboration examines the data collected between 2016 and 2018 for evidence that quarks are composite particles and not elementary. …

Studying the production of two Higgs bosons is the most obvious way to understand the field responsible for the Higgs boson. A new result by the CMS collaboration gets closer than ever to measuring this field and its physics prediction. The Higgs…

The Standard Model of Particle Physics is the theory that physicists use to describe elementary particles’ fundamental interactions. The Standard Model was developed over many decades. It has been able to predict experimental observations with…

  The year 2020 is coming to an end; despite its exceptional difficulties and challenges caused by the world-wide COVID-19 pandemic, the CMS collaboration reached many important milestones during this period. This overview gives a brief glimpse…