Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Thomson's e/m Experiment01:19

Thomson's e/m Experiment

7.9K
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...
7.9K
Nuclear Transmutation03:20

Nuclear Transmutation

21.1K
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...
21.1K
The Bohr Model02:18

The Bohr Model

84.2K
Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the...
84.2K
Fermi Level Dynamics01:12

Fermi Level Dynamics

1.0K
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
1.0K
Subatomic Particles03:37

Subatomic Particles

119.6K
Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller subatomic particles: protons, neutrons, and electrons. These three particles account for the mass and the charge of an atom.
119.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Search for Light Pseudoscalar Bosons, Pair-Produced in Higgs Boson Decays in the Four-Electron Final State in Proton-Proton Collisions at sqrt[s]=13  TeV.

Physical review letters·2026
Same author

First Evidence for Mixing-Induced CP Violation in B_{s}^{0}→J/ψϕ(1020) Decays in pp Collisions at sqrt[s]=13  TeV.

Physical review letters·2026
Same author

Observation of Suppressed Charged-Particle Production in Ultrarelativistic Oxygen-Oxygen Collisions.

Physical review letters·2026
Same author

Measurement of D^{0} Meson Photoproduction in Ultraperipheral Heavy Ion Collisions.

Physical review letters·2026
Same author

Observation of tWZ Production at the CMS Experiment.

Physical review letters·2026
Same author

First Exclusive Reconstruction of the B^{*+}, B^{*0}, and B_{s}^{*0} Mesons and Precise Measurement of Their Masses.

Physical review letters·2026
Same journal

Quantitative understanding of PDF fits and their uncertainties.

The European physical journal. C, Particles and fields·2026
Same journal

Probing the Higgs portal to a strongly-interacting dark sector at the FCC-ee.

The European physical journal. C, Particles and fields·2026
Same journal

Quantifying vacuum-like jets in heavy-ion collisions: a machine learning study.

The European physical journal. C, Particles and fields·2026
Same journal

High-energy decays and weak quantum measurements.

The European physical journal. C, Particles and fields·2026
Same journal

Combined effective field theory interpretation of Higgs boson, electroweak vector boson, top quark, and multijet measurements.

The European physical journal. C, Particles and fields·2026
Same journal

A journey to ITACA: Ion Tracking with Ammonium Cations Apparatus.

The European physical journal. C, Particles and fields·2026
See all related articles

Related Experiment Video

Updated: Apr 12, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

9.0K

The NUHM2 after LHC Run 1.

O Buchmueller1, R Cavanaugh2, M Citron1

  • 1High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK.

The European Physical Journal. C, Particles and Fields
|May 19, 2015
PubMed
Summary
This summary is machine-generated.

This study analyzes the NUHM2 model using extensive data, finding preferred regions with negative scalar masses squared. The tension between the supersymmetric interpretation and LHC data remains in NUHM2, similar to previous models.

More Related Videos

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

27.8K
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

7.5K

Related Experiment Videos

Last Updated: Apr 12, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

9.0K
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

27.8K
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

7.5K

Area of Science:

  • High Energy Physics
  • Particle Physics
  • Cosmology

Background:

  • Supersymmetry (SUSY) theories predict new particles but lack direct experimental evidence.
  • The Next-to-Minimal Supersymmetric Standard Model (NUHM2) offers a framework to reconcile theoretical predictions with experimental constraints.
  • Understanding the parameter space of SUSY models is crucial for guiding future experimental searches.

Purpose of the Study:

  • To perform a frequentist analysis of the NUHM2 parameter space.
  • To incorporate the latest experimental data, including Higgs mass measurements and LHC searches for SUSY signals.
  • To investigate the implications of dark matter detection experiments and B-physics observables.

Main Methods:

  • Utilizing the MultiNest sampling algorithm to explore the NUHM2 parameter space with over 10^6 points.
  • Including data from ATLAS and CMS Higgs mass measurements.
  • Incorporating LHC Run 1 data for SUSY searches, B-physics observables, electroweak precision data, and dark matter scattering experiments (XENON100, LUX).

Main Results:

  • Preferred NUHM2 parameter regions exhibit negative SUSY-breaking scalar masses squared at the GUT scale for both squarks/sleptons and Higgs multiplets.
  • The tension between the supersymmetric interpretation of B-physics observables and the absence of SUSY signals at the LHC is not significantly alleviated in NUHM2.
  • The minimum chi-squared (χ²) value for NUHM2 is found to be 21 degrees of freedom (dof), comparable to previous analyses of CMSSM and NUHM1.

Conclusions:

  • The NUHM2 model, despite its extended parameter space, does not resolve the current tension with LHC SUSY searches.
  • Preferred regions suggest specific properties for SUSY-breaking parameters, pointing towards negative scalar masses squared.
  • Further investigation into the parameter space and comparison with other SUSY models remain essential for understanding physics beyond the Standard Model.