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

3.7K
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...
3.7K
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

3.6K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed...
3.6K
Symmetry in Maxwell's Equations01:28

Symmetry in Maxwell's Equations

3.4K
Once the fields have been calculated using Maxwell's four equations, the Lorentz force equation gives the force that the fields exert on a charged particle moving with a certain velocity. The Lorentz force equation combines the force of the electric field and of the magnetic field on the moving charge. Maxwell's equations and the Lorentz force law together encompass all the laws of electricity and magnetism. The symmetry that Maxwell introduced into his mathematical framework may not be...
3.4K
Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

3.1K
Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
3.1K
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

37.1K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
37.1K
Electromagnetic Wave Equation01:24

Electromagnetic Wave Equation

1.1K
Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Test of CP Symmetry in the Neutral Decays of Λ via J/ψ→ΛΛ[over ¯].

Physical review letters·2026
Same author

Precise Measurement of the Chromoelectric Dipole Moment of the Charm Quark.

Physical review letters·2026
Same author

Precise Measurement of Matter-Antimatter Asymmetry with Entangled Hyperon-Antihyperon Pairs.

Physical review letters·2026
Same author

Observation of Λ[over ¯]p→K^{+}π^{+}π^{-}π^{0} and Λ[over ¯]p→K^{+}π^{+}π^{-}2π^{0}.

Physical review letters·2026
Same author

First Measurement of the D_{s}^{+}→K^{0}μ^{+}ν_{μ} Decay.

Physical review letters·2026
Same author

Observation of the Electromagnetic Radiative Decays of the Λ(1520) and Λ(1690) to γΣ^{0}.

Physical review letters·2026

Related Experiment Video

Updated: Jul 1, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

8.7K

Determination of the Σ^{+} Timelike Electromagnetic Form Factors.

M Ablikim1, M N Achasov2, P Adlarson3

  • 1Institute of High Energy Physics, Beijing 100049, People's Republic of China.

Physical Review Letters
|March 8, 2024
PubMed
Summary

Researchers studied the electron-positron annihilation into Σ⁺Σ⁻ pairs. They determined the relative phase of hyperon electromagnetic form factors, offering insights into baryon dynamics.

More Related Videos

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

7.8K
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

6.7K

Related Experiment Videos

Last Updated: Jul 1, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

8.7K
Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

7.8K
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

6.7K

Area of Science:

  • Particle Physics
  • Quantum Chromodynamics
  • Hadron Spectroscopy

Background:

  • The study of hyperon electromagnetic form factors provides crucial insights into the structure and dynamics of baryons.
  • Previous research has primarily focused on the magnitude of these form factors, with limited exploration of their phase information.

Purpose of the Study:

  • To investigate the process of electron-positron annihilation into Σ⁺Σ⁻ pairs at various center-of-mass energies.
  • To extract the relative magnitude and phase of the Σ⁺ electromagnetic form factors in the timelike region.
  • To explore the phase of hyperon electromagnetic form factors across a wide range of four-momentum transfer for the first time.

Main Methods:

  • Data analysis of e⁺e⁻ → Σ⁺Σ⁻ events collected by the BESIII detector at BEPCII collider.
  • Utilizing a fully differential angular description of final state particles.
  • Extracting electromagnetic form factor magnitudes and relative phases.

Main Results:

  • The relative phase between electric and magnetic form factors of Σ⁺ was determined at different center-of-mass energies: sinΔΦ=-0.67±0.29(stat)±0.18(syst) at √s=2.3960 GeV, ΔΦ=55°±19°(stat)±14°(syst) at √s=2.6454 GeV, and 78°±22°(stat)±9°(syst) at √s=2.9000 GeV.
  • This marks the first exploration of hyperon electromagnetic form factor phases over a broad range of four-momentum transfer.
  • The study provides essential data on the phase evolution with four-momentum transfer.

Conclusions:

  • The determined phase information is vital for understanding the asymptotic behavior of hyperon form factors.
  • The results contribute to a deeper understanding of the internal dynamics of baryons.
  • This research opens new avenues for exploring the complex nature of hadron structure.