Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Subatomic Particles

Subatomic Particles

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.

Electron Behavior

Electron Behavior

Electrons are negatively charged subatomic particles attracted to and orbit around the positively-charged nucleus of an atom. They reside in spaces associated with energy levels called shells and are further organized into subshells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus have less energy,...

Electron Behavior

Electron Behavior

Overview
Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the...

Sources and Properties of Electric Charge

Sources and Properties of Electric Charge

All objects we see around us consist of atoms, which combine to form molecules. The lightest element in the universe is hydrogen, and a hydrogen atom consists of a positively charged proton and a negatively charged electron. The magnitude of charge that a proton and an electron carry are the same, and it is the fundamental unit of charge. In SI units, it is 1.602 times 10-19 coulomb.
Most atoms additionally constitute another fundamental particle, the neutron. It carries no electrical charge. A...

Thomson's e/m Experiment

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...

Atomic Mass

Atomic Mass

Atoms — and the protons, neutrons, and electrons that compose them — are extremely small. For example, a carbon atom weighs less than 2 × 10−23 g. When describing the properties of tiny objects such as atoms, we use appropriately small units of measure, such as the atomic mass unit (amu). The amu was originally defined based on hydrogen, the lightest element, then later in terms of oxygen. Since 1961, it has been defined with regard to the most abundant isotope of carbon, atoms of which...

You might also read

Related Articles

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

Sort by

Same author

Can the Strong Interactions between Hadrons Be Determined Using Femtoscopy?

Physical review letters·2026

Same author

Emergence of the π(1300) Resonance from Lattice QCD.

Physical review letters·2026

Same author

Searching for the Tetraneutron Resonance on the Lattice.

Physical review letters·2026

Same author

Lattice Calculation of the Sn Isotopes near the Proton Dripline.

Physical review letters·2026

Same author

Deciphering the mechanism of <math><mrow><mi>J</mi> <mo>/</mo> <mi>ψ</mi></mrow></math> -nucleon scattering.

Fundamental research·2025

Same author

Ab Initio Study of the Radii of Oxygen Isotopes.

Physical review letters·2025

Search research articles

Related Experiment Video

Updated: Nov 4, 2025

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Where Is the Lightest Charmed Scalar Meson?

Meng-Lin Du¹, Feng-Kun Guo^2,3, Christoph Hanhart⁴

¹Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany.

Physical Review Letters

|May 28, 2021

Summary

The lightest charmed scalar meson, D_{0}^{*}(2300), conflicts with LHCb data. A lighter D_{0}^{*}(2100) meson better explains B meson decay, highlighting the need for chiral symmetry in heavy meson analysis.

More Related Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

Related Experiment Videos

Last Updated: Nov 4, 2025

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

Area of Science:

Particle Physics
Hadron Spectroscopy
Quantum Chromodynamics

Background:

The D_{0}^{*}(2300) is the lightest observed charmed scalar meson.
Previous analyses of B meson decays have relied on this assignment.
Modern B factories and LHCb experiments provide high-precision data.

Purpose of the Study:

To re-evaluate the properties of the lightest charmed scalar meson.
To analyze the decay B^{-}→D^{+}π^{-}π^{-} using precise LHCb data.
To ensure consistency with fundamental principles like chiral symmetry and unitarity.

Main Methods:

Analysis of LHCb data for the B^{-}→D^{+}π^{-}π^{-} decay.
Application of an unitarized chiral amplitude model.
Model-independent extraction of the low-energy S-wave Dπ phase.

Main Results:

The parameters of the D_{0}^{*}(2300) are in conflict with LHCb data.
A lighter charmed scalar meson, D_{0}^{*}(2100), provides a good description of the data.
The difference between decay and scattering Dπ phases is attributed to ρ^{-} exchange.

Conclusions:

The lightest charmed scalar meson is likely lighter than D_{0}^{*}(2300).
Accurate extraction of heavy meson properties requires methods respecting chiral symmetry, unitarity, and analyticity.
This finding is analogous to studies of light scalar mesons.