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Related Concept Videos

Gauss's Law01:07

Gauss's Law

If a closed surface does not have any charge inside where an electric field line can terminate, then the electric field line entering the surface at one point must necessarily exit at some other point of the surface. Therefore, if a closed surface does not have any charges inside the enclosed volume, then the electric flux through the surface is zero. What happens to the electric flux if there are some charges inside the enclosed volume? Gauss's law gives a quantitative answer to this question.
Nuclear Transmutation03:20

Nuclear Transmutation

Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
Detection of Black Holes01:10

Detection of Black Holes

Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Thomson's e/m Experiment01:19

Thomson's e/m Experiment

In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
Additional Subnuclear Structures02:10

Additional Subnuclear Structures

The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
Additional Subnuclear Structures02:10

Additional Subnuclear Structures

The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
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Related Experiment Video

Updated: May 18, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Total width of 125 GeV Higgs boson.

Vernon Barger1, Muneyuki Ishida, Wai-Yee Keung

  • 1Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA. barger@pheno.wisc.edu

Physical Review Letters
|September 26, 2012
PubMed
Summary

The 125 GeV Higgs boson

Area of Science:

  • Particle Physics
  • High-Energy Physics
  • Cosmology

Background:

  • The Standard Model of particle physics includes the Higgs boson, crucial for understanding mass.
  • Experimental data from the Large Hadron Collider (LHC) and Tevatron provide insights into Higgs boson properties.

Purpose of the Study:

  • Determine the total width of the 125 GeV Higgs boson.
  • Estimate the branching fraction for Higgs boson decay into dark matter.
  • Investigate the viability of the di-photon (γγ) decay channel signal at the LHC.

Main Methods:

  • Analysis of LHC and Tevatron measurements of Higgs boson cross sections.
  • Comparative analysis of various Higgs boson decay channels.
  • Theoretical modeling for Higgs boson decay to dark matter.

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Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Related Experiment Videos

Last Updated: May 18, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

  • Examination of theoretical constraints on Higgs boson decay signals.

    • Main Results:

    • The total width of the 125 GeV Higgs boson is determined to be 6.1(-2.9)(+7.7) MeV.
    • A method for estimating the Higgs boson's branching fraction to dark matter is presented.
    • A no-go theorem is discussed concerning the di-photon (γγ) signal of the Higgs boson at the LHC.

    Conclusions:

    • The derived total width provides a key parameter for Higgs boson physics.
    • The proposed method offers a pathway to probe Higgs boson interactions with dark matter.
    • The no-go theorem has implications for future searches and interpretations of Higgs boson signals at the LHC.