Tag: Highlights
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CMS delivers the best-precision measurement of the W boson mass at the LHC
In an extraordinary feat of precision physics, CMS measures the mass of the W boson, and finds it to be in good agreement with the prediction by the Standard Model of particle physics.
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Towards a new precision era in the study of electroweak interactions
A fundamental parameter of the Standard Model, the electroweak mixing angle plays a key role in the “Higgs mechanism”, when the W and Z gauge bosons get their masses through electroweak symmetry breaking.
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CMS observes four-top quark production
CMS observed the simultaneous production of four top quarks, one of the rarest physics processes ever observed at the LHC, opening the door to detailed searches for physics beyond the Standard Model (SM).
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Top quarks fast to arrive at new energy frontier
On 5 July 2022, the LHC surpassed the previous energy limits of experimental particle physics, breaking its own record by achieving stable proton-proton collisions at a center-of-mass energy of √s = 13.6 TeV.
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New study of rare B meson decays to two muons
Rare events, such as a total solar eclipse or a supernova explosion, are fascinating and stimulate our imagination.
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The Higgs Boson turns 10: Results from the CMS experiment
Exactly ten years ago, on the 4th of July 2012, the ATLAS and CMS experiments announced the discovery of a new particle compatible with the long-sought Higgs boson.
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Search for rare production of vector boson pairs
Vector boson (W, Z) scattering process is a purely weak process which have been studied here to investigate interesting characteristics of the standard model and to test new physics scenarios that have a sizable indirect impact on the measurable quantities. This analysis looks for production of two opposite sign W bosons accompanied by a pair…
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CMS Collaboration measures the mass of the top quark with unparalleled accuracy
The CMS collaboration has substantially improved the precision with which the top quark mass is measured. The latest result, a measurement of the top quark mass of 171.77 ± 0.38 GeV, was presented at CERN last week and estimates the value of the top quark mass with a precision of about 0.22%. The gain comes…
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Life of the Higgs boson
The Higgs boson is peculiar in many respects.
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Trio of J/ψ particles in one go
High-energy particle accelerators are unique tools to study the structure of matter at the shortest distances.