New Subatomic Particles Are Shifting the Standard Model of Physics

Published on May 4, 2019

Captions provided by CCTubes – Captioning the Internet! The Large Hadron Collider just discovered a new pentaquark, but how does it fit in our current understanding of the Standard Model?

Could Everything We Know About String Theory Be Wrong? –

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LHCb experiment discovers a new pentaquark
“The analysis presented today at the Rencontres de Moriond quantum chromodynamics (QCD) conference used nine times more data from the Large Hadron Collider than the 2015 analysis. The data set was first analysed in the same way as before and the parameters of the previously reported Pc(4450)+ and Pc(4380)+ structures were consistent with the original results. ”

The Standard Model
“Our best understanding of how these particles and three of the forces are related to each other is encapsulated in the Standard Model of particle physics. Developed in the early 1970s, it has successfully explained almost all experimental results and precisely predicted a wide variety of phenomena. Over time and through many experiments, the Standard Model has become established as a well-tested physics theory.”

The Physics Still Hiding in the Higgs Boson
“That’s one reason she and many of her colleagues want to build a bigger, better machine. The first phase of the proposed supercollider has been nicknamed the “Higgs factory,” because the machine would collide electrons and positrons with energies precisely tuned to maximize their chance of yielding Higgs bosons, whose subsequent decays could be measured in detail. In phase two, the giant machine would slam together protons, resulting in messier but much more energetic collisions.”


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