Physics Encyclopedia Entry 1779315784
Summary: This entry is about the Higgs Boson, a fundamental subatomic particle predicted by the Standard Model of particle physics and discovered in 2012 at the Large Hadron Collider.
Overview
The Higgs Boson is a scalar boson that plays a crucial role in electroweak symmetry breaking, a process that gives mass to fundamental particles in the universe. It is named after physicist Peter Higgs, who, along with several other physicists, proposed the existence of this particle in the 1960s. The Higgs Boson is a key component of the Standard Model, a theoretical framework that describes the behavior of fundamental particles and forces in the universe.
The discovery of the Higgs Boson was a major milestone in particle physics, confirming a fundamental aspect of the Standard Model. The particle is produced when two protons collide at high energies, and its existence is inferred by the presence of a characteristic decay signature. The Higgs Boson is a scalar boson, meaning it has zero spin, and it interacts with fundamental particles through the Higgs field, a field that permeates the universe.
History/Background
The concept of the Higgs Boson was first proposed in the 1960s by physicists Peter Higgs, Felix Bloch, Philip Anderson, Gerald Guralnik, C. R. Hagen, and Tom Kibble. They proposed that a scalar field, now known as the Higgs field, could be responsible for giving mass to fundamental particles. The Higgs Boson is the quanta of this field, and its existence was predicted to be around 125-126 GeV (gigaelectronvolts).
The search for the Higgs Boson began in the 1980s, with the construction of the Large Electron-Positron Collider (LEP) at CERN. However, the LEP was not powerful enough to produce the Higgs Boson, and the search continued with the Large Hadron Collider (LHC), which was completed in 2008. The LHC was designed to collide protons at energies of up to 13 TeV (tera-electronvolts), which is sufficient to produce the Higgs Boson.
Key Information
* Mass: The Higgs Boson has a mass of approximately 125.09 GeV.
* Spin: The Higgs Boson has zero spin, making it a scalar boson.
* Decay signature: The Higgs Boson decays into a pair of bottom quarks, tau leptons, or W bosons.
* Production: The Higgs Boson is produced when two protons collide at high energies.
* Detection: The Higgs Boson is detected by its decay signature, which is measured by sophisticated particle detectors.
Significance
The discovery of the Higgs Boson confirmed a fundamental aspect of the Standard Model, providing strong evidence for the existence of the Higgs field. The Higgs Boson is a key component of the Standard Model, and its discovery has far-reaching implications for our understanding of the universe. The discovery of the Higgs Boson also opened up new avenues for research, including the study of the Higgs sector and the origin of mass.
INFOBOX:
- Name: Higgs Boson
- Type: Fundamental particle
- Date: Discovered in 2012
- Location: CERN, Geneva, Switzerland
- Known For: Confirmation of the Standard Model and the existence of the Higgs field
TAGS: Higgs Boson, Standard Model, Particle Physics, Large Hadron Collider, Electroweak Symmetry Breaking, Scalar Boson, Higgs Field, Fundamental Particles, CERN.
