- 4194 - HIGGS BOSON - measuring its mass? Measuring the Higgs boson's mass revolutionizes our understanding of particle interactions. The Higgs boson sets a new record for precision, and ATLAS is at the forefront of the discovery. In an announcement at the Lepton Photon Conference, the ATLAS collaboration revealed how they had accomplished a remarkable feat in particle physics.
-------------------- 4194 - HIGGS BOSON - measuring its mass?
- For over a
decade, the Higgs boson has captured the imagination of scientists worldwide.
Since its discovery at the Large Hadron Collider (LHC) 11 years ago, this
elusive particle has held the key to unlocking the secrets of the Universe's
fundamental structure.
-
- The “Standard
Model” is a theory that explains the interactions between particles in our
universe. The Higgs Boson and Top Quark
Interaction were finally observed at CERN
-
- But here's the
catch. The mass of the Higgs boson isn't
something that can be predicted. Instead, physicists rely on experimental
measurements to determine this crucial value. Why is it so important? The mass
of the Higgs boson plays a critical role in determining how it interacts with
other particles and with itself.
-
- By accurately
measuring its mass, scientists can fine-tune theoretical calculations and
compare them with the predictions from the Standard Model. Any deviations from
these predictions could hint at entirely new and unexplored phenomena, shaking
the foundations of our understanding of the Universe.
-
- Beyond theoretical
calculations, the Higgs boson's mass also profoundly impacts the evolution and
stability of the Universe's vacuum. It's no exaggeration to say that precise
knowledge of this fundamental parameter is a game-changer in particle physics.
-
- “ATLAS'” latest
achievement involves combining two crucial results to produce the most precise
measurement of the Higgs boson's mass ever recorded. The first measurement
focused on the Higgs boson's decay into two high-energy photons, known as the
"diphoton channel."
-
- The result was a
staggering mass of 125.22 billion electronvolts (GeV) with an uncertainty of a
mere 0.14 GeV. That's a precision of 0.11%.
-
- The calibration of
photon energy measurements underwent dramatic improvements, cutting the
systematic uncertainty by nearly a factor of four, down to a mere 0.09 GeV.
-
- The researchers
then combined this result with an earlier mass measurement obtained from the
"four-lepton channel." The result? A Higgs boson mass of 125.11 GeV
with an uncertainty of only 0.11 GeV.
-
- This discovery
represents another crucial step in the increasingly detailed mapping of
particle physics' critical new sector. The advanced and rigorous calibration
techniques used in this analysis were critical for pushing the precision to
such an unprecedented level... They will also greatly benefit future analyses.
-
-
October 21, 2023 HIGGS
BOSON - measuring its mass? 4194
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