What is Weak force: Definition and 64 Discussions

In nuclear physics and particle physics, the weak interaction, which is also often called the weak force or weak nuclear force, is the mechanism of interaction between subatomic particles that is responsible for the radioactive decay of atoms. The weak interaction participates in nuclear fission, and the theory describing its behaviour and effects is sometimes called quantum flavourdynamics (QFD). However, the term QFD is rarely used, because the weak force is better understood by electroweak theory (EWT).The effective range of the weak force is limited to subatomic distances, and is less than the diameter of a proton. It is one of the four known force-related fundamental interactions of nature, alongside the strong interaction, electromagnetism, and gravitation.

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  1. B

    Electromagnetic and the weak force

    Homework Statement I need an example of the math Homework Equations The Attempt at a Solution
  2. H

    Neutron Decay and the Weak Force

    I believe the neutron decays with a half life around 12 minutes via the weak mechanism. I'm wondering what causes a particular neutron to decay. At the moment the neutron decays, has it encountered (run into) a stray weak field? Or ... does the neutron decay just because of internal forces...
  3. N

    Does the strong force affect the weak force

    Hello, can anyone help. Does the strong force affect the weak force in any way. Or do both not interact with each other. Thank you.
  4. J

    Can particles be weak force charge neutral?

    can particles be "weak force" charge neutral? In the standard model we have fermions of various electrical charges, including neutral. In some sense, we can consider right handed electrons as "weak force" neutral, however the mass term kind of "mixes" the left and right handed. Is there...
  5. G

    Weak force holds neutrons together?

    I have been given the impression that the weak force is what holds the neutron together (preventing it from decaying to an electron and proton) and that the neutron eventually decayed, despite this weak force, by 'tunneling out' Is that right or am I way off?
  6. I

    The weak force and effective coupling

    I just read something about the creation of deuteron in the first step of the pp cycle. Given that you have the reaction: p + p -> d + e^+ + v_e, where e^+ is a positron and v_e is an electron neutrino. Since there is a neutrino present, it is a weak interaction. In addition, as the interaction...
  7. R

    Problems with electromagnet force and weak force

    The electromagnetic force is mediated by photons , which have 0 mass. so electromagnetic forces have infinite range. the weak force is mediated by three intermediate bosons, W+, W-and Z0 particles. these all have mass, the two W particles about 80GeV and the Z is about 90GeV. the bit below is...
  8. D

    Do black holes repel the weak force?

    I don't have a formal education in physics so please excuse my ignorance. I had an idea and was wondering if as matter gets stretched and spun toward the event horizon is it possible that as it is consumed the weak force is repelled while everything else gets consumed? I hope that makes sense...
  9. P

    Are photons affected by the strong force? The weak force?

    Can light travel through an atom? If yes, how will it emerge? If no, why not? Will it interact with any subatomic particles?
  10. D

    Questions about weak force +bosons

    i can't seem to find any straightforward descriptions of it for why+when its needed. Plus I am really confused as to how they weighed the bosons if they only exist for less than a nanosecond. I am more interested in finding out how scientists figured out the bosons weight than anything
  11. T

    Weak Force Affects Particles: Electrons & Quarks

    Homework Statement What particle(s) does the weak force affect? I think it's electrons but my teacher thought it was quarks since the range of the weak force is <0.003 fm.
  12. C

    Why is the Weak Force So Weak?

    Why is it called the 'weak force'? what makes it weak?
  13. L

    The speed of light, gravity, strong force, weak force

    I could benefit from someone shedding some light on a couple of questions that I have regarding the speed of various entites: 1) It seems that the speed of gravity, e.g, if the sun disappeared, is the speed of light WRT things I've read. What is it that would inherently cause gravity to travel...
  14. C

    Exploring the Relationship between Gravity and the Weak Force

    gravity and weak force is it possible to compare the strength of weak force to gravity and if so how is weak force stronger than gravity?
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