Standard-model tutorials, questions, and resources

$\rho\to \pi\pi$ parity

December 18th, 2022

parity standard-model conservation-laws particle-physics pions

How can we split a proton?

October 31st, 2020

proton-decay confinement protons standard-model quarks

If the quarks in a neutron are (up,down,down), why isn't it negatively charged?

August 1st, 2022

charge baryons quarks standard-model

What is lepton number?

August 1st, 2022

particle-physics standard-model leptons

How does Higgs field relate to Aether theories?

August 1st, 2022

higgs standard-model aether

One Loop Higgs Mass Correction

April 4th, 2020

standard-model quantum-field-theory

If the electron is point like, then what is the significance of the classical radius of the electron?

January 16th, 2020

particle-physics standard-model quantum-electrodynamics scales

Is there such a thing as red - anti red gluon? Why such gluon posssibilities appear in equations?

February 22nd, 2021

strong-force standard-model gluons

Relationship between hierarchy problem and higgs fine tuning?

November 7th, 2020

standard-model supersymmetry higgs scales fine-tuning

Why is mass renormalization insufficient to explain electron mass?

March 13th, 2020

mass standard-model renormalization fermions higgs

Do color-neutral gluons exist?

October 12th, 2020

gluons quantum-chromodynamics standard-model strong-force quarks

Do quark charges repel one another?

March 8th, 2021

quarks standard-model strong-force confinement color-charge

How do I know the proton isn't made of 3 anti-down quarks?

August 1st, 2022

particle-physics standard-model quarks protons

Help me understand Lepton universality

May 14th, 2021

standard-model leptons

What's the isospin of photons?

August 1st, 2022

isospin-symmetry electroweak standard-model photons particle-physics

What parity has an electron?

March 7th, 2020

parity particle-physics standard-model

What is $U(1)$ symmetry?

May 8th, 2020

gauge-theory standard-model symmetry gauge-invariance

Explaining chirality for spin 1/2 particle

November 21st, 2020

chirality elementary-particles standard-model symmetry

What is the difference between a charged rho meson and a charged pion?

August 1st, 2022

particle-physics quantum-spin standard-model mesons pions

Computing box diagrams with non-vanishing external momenta

June 25th, 2020

feynman-diagrams homework-and-exercises quantum-field-theory standard-model

Is there an explanation for the 3:2:1 ratio between the electron, up and down quark electric charges?

August 1st, 2022

standard-model particle-physics color-charge physical-constants quantum-chromodynamics

Does the Higgs field really explain mass or just reformulate it? What about charge?

August 1st, 2022

particle-physics mass standard-model charge higgs

Does the Standard Model require neutrinos to be massless?

May 7th, 2021

particle-physics mass standard-model neutrinos

How to integrate out the $W$-boson fields?

August 1st, 2022

beyond-the-standard-model weak-interaction quantum-field-theory standard-model path-integral

Chiral anomalies

September 22nd, 2020

quantum-anomalies quantum-field-theory chirality standard-model beyond-the-standard-model

Hypercharge of the complex Higgs doublet

July 18th, 2020

higgs standard-model

Why is Neutron Heavier than Proton?

August 1st, 2022

standard-model radiation protons neutrons

What constant varies in the fine structure constant?

September 1st, 2020

physical-constants standard-model renormalization

Does the Standard Model have a Landau pole?

August 6th, 2020

quantum-field-theory renormalization standard-model

Proton Radius Puzzle, Is it possible that proton's radius differ depending on how you measure it? What does that even mean?

October 7th, 2020

particle-physics standard-model protons beyond-the-standard-model

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