BY HIMADRI SAMAL

12. • The Higgs Boson is named for
Peter Higgs who, along with two
other teams, proposed the
mechanism that suggested such a
particle in 1964 and was only one to
identify some of its theoretical
properties.
• In mainstream media, it is often
referred to as “The God Particle”,
after the title of Leon Lederman’s
book on the topic (1993).
PETER HIGGS:

13. • Initially when this model was being developed it seemed that
these models were incomplete as they forbid elementary particles
from having any mass.
• Then in 1964 three groups of physicists almost simultaneously
released papers describing how masses could be given to these
particles, using an approach known as spontaneous symmetry
breaking.
Higgs Field-
it is one of the several ways that this
mechanism could arise.
According to this theory a field exists
throughout space that is responsible for the Higgs mechanism.
HIGGS BOSON MECHANISM

14.  Experiment to show
whether the Higgs
boson did or did not
exist began in 1980s.
In 2008 the large
hadron collider (LHC)
was inaugurated, being
the most powerful
particle accelerator ever
built.
INSTITUTION OF
LHC EXPERIMENT

15.  In late 2011 two of the LHC’s
experiments independently began
to suggest “hints” of a Higgs boson
detection.
And in 2012 CERN announced
evidence of discovery of a boson
with energy level and other
properties consistent with those
expected in a Higgs Boson.

16. • According to the theory, a
field exists that has non zero
strength everywhere – even in
empty space, and that
particle acquire mass by
interacting with this so called
higgs field.
•If this theory is true, a
matching particle should also
exist and be detectable,
providing a crucial test of the
theory.

18. •About the Experiment –
• One of the primary goals of the
Large Hadron Collider at CERN
in Geneva, Switzerland, the most
powerful particle accelator and
one of the most complicated
scientific instrument ever built –
is to test the existence of the

19.  Scientists at the Large
Hadron collider, smashed
together beams of proton –
the “hearts of tom” – at close
to the speed of light.
 which recreated the
conditions that existed a
fraction of a second after the
Big Bang.
After the collision they
rapidly decay.
If Higgs Boson is right then
a few Higgs boson should be
created in every trillion
collisions.
What are they trying to do in this
experiment?

20.  In July 2012, the scientists at the CERN nuclear research facility
found the Higgs Boson, the so called ‘God particle’.
•The leaders of the experiment said that there were two independent
teams who have observed a particle similar to Higgs with mass 126 GeV.
According to the scientists they have more than “five sigma” certainty
that the particle they saw was the Higgs Boson.
Result of the experiment

21. SOURCES: WIKIPEDIA,NOBELPRIZES.ORG,SLIDESHARE