Communication
Free
Faster access than browser!

# X (charge)

In particle physics, the X-charge (or simply X) is a conserved quantum number associated with the SO(10) grand unification theory. [1]

## B − L

In high energy physics, B − L (pronounced "bee minus ell") is the difference between the baryon number (B) and the lepton number (L).

## Baryon number

In particle physics, the baryon number is a strictly conserved additive quantum number of a system.

## Conservation law

In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time.

## Grand Unified Theory

A Grand Unified Theory (GUT) is a model in particle physics in which at high energy, the three gauge interactions of the Standard Model which define the electromagnetic, weak, and strong interactions or forces, are merged into one single force.

## Lepton number

In particle physics, the lepton number is the number of leptons minus the number of antileptons.

## Noether's theorem

Noether's (first) theorem states that every differentiable symmetry of the action of a physical system has a corresponding conservation law.

## Particle physics

Particle physics is the branch of physics that studies the nature of the particles that constitute matter (particles with mass) and radiation (massless particles).

## Quantum number

Quantum numbers describe values of conserved quantities in the dynamics of a quantum system.

## SO(10) (physics)

In particle physics, one of the grand unified theories (GUT) is based on the SO(10) Lie group.

## Standard Model (mathematical formulation)

This article describes the mathematics of the Standard Model of particle physics, a gauge quantum field theory containing the internal symmetries of the unitary product group.

## Weak hypercharge

The weak hypercharge in particle physics is a quantum number relating the electric charge and the third component of weak isospin.

## X and Y bosons

In particle physics, the X and Y bosons (sometimes collectively called "X bosons") are hypothetical elementary particles analogous to the W and Z bosons, but corresponding to a new type of force predicted by the Georgi–Glashow model, a grand unified theory.

## References

Hey! We are on Facebook now! »