DAILY NEWS ANALYSIS
02 April, 2021
6 Min Read
GS-Paper-3: S&T– UPSC PRELIMS – Mains Application
Context: Large Hadron Collider beauty Experiment. The LHCb experiment at CERN (European Council for Nuclear Research) has announced the results of their latest analysis of data. LHCb is an experiment set up to explore what happened after the Big Bang that allowed matter to survive and build the Universe we inhabit today.
Fourteen billion years ago, the Universe began with a bang. Crammed within an infinitely small space, energy coalesced to form equal quantities of matter and antimatter. But as the Universe cooled and expanded, its composition changed. Just one second after the Big Bang, antimatter had all but disappeared, leaving the matter to form everything that we see around us — from the stars and galaxies to the Earth and all life that it supports.
Imp Points:
What is the new finding?
What is this excitement all about?
It is necessary to delve into the world of elementary particles to understand this.
(1) Particle zoo
Until now it is believed that the electron, muon and tauon and their antiparticles, though they differ in mass, behave similarly in particle interactions.
In this particle zoo, while the baryons are made up of combinations of three quarks, the mesons contain two quarks, more accurately a quark and antiquark pair, and the leptons are truly fundamental and are thought to be indivisible.
(2) Colliding particle beams
By interactions here, is meant the following:
(3) Lepton universality principle
More Article on LHC: https://www.aspireias.com/daily-news-analysis-current-affairs/Particle-physics-Large-Hadron-Collider-experiment
Source: TH
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