Why are vector mesons more massive than pseudoscalar mesons?

In summary, the problem is understanding why vector mesons are more massive than pseudoscalar mesons, but the relevant equations and spin-spin interactions do not provide a clear answer. A potential source for further information is the article "Decays of Heavy Vector Mesons into Higgs Particles" by Frank Wilczek. However, access to this article is currently restricted to subscription journals.
  • #1
CricK0es
54
3
Homework Statement
Why are vector mesons more massive than pseudoscalar mesons? Not any sort of set problem, just reading but I can't find an answer or explanation
Relevant Equations
*
Problem Statement: Why are vector mesons more massive than pseudoscalar mesons? Not any sort of set problem, just reading but I can't find an answer or explanation
Relevant Equations: *

It's going to be something to do with the spin-spin interactions for J=0 and J=1. But then I don't see how to get an answer or explanation out of that.

Many thanks
 
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  • #2
Please see "Decays of Heavy Vector Mesons into Higgs Particles", Frank Wilczek, Phys. Rev. Lett. 39 (1977) 1304.
 
  • #3
Do you know where I can get access to this? Maybe an alternative source with similar content?

Currently it's all locked behind subscription journals etc...
 

Related to Why are vector mesons more massive than pseudoscalar mesons?

1. Why do vector mesons have a higher mass than pseudoscalar mesons?

This is due to the different quantum numbers of the two types of mesons. Vector mesons have a spin of 1, while pseudoscalar mesons have a spin of 0. According to the Heisenberg uncertainty principle, particles with a higher spin will have a higher mass.

2. How do the masses of vector and pseudoscalar mesons affect their behavior in particle interactions?

The mass of a particle determines its energy and momentum, which in turn affects how it interacts with other particles. Vector mesons, being more massive, have a larger energy and momentum and thus tend to interact more strongly with other particles compared to pseudoscalar mesons.

3. Are there any exceptions to the rule that vector mesons are more massive than pseudoscalar mesons?

Yes, there are a few exceptions, such as the pion and kaon particles. These are both pseudoscalar mesons but have a slightly higher mass than some vector mesons. This is due to their unique properties and the symmetry breaking of the strong force.

4. How does the mass difference between vector and pseudoscalar mesons affect the stability of these particles?

The mass difference plays a crucial role in the stability of these particles. Generally, particles with higher masses are less stable and tend to decay more quickly. Therefore, pseudoscalar mesons, being less massive, have longer lifetimes compared to vector mesons.

5. Can the mass difference between vector and pseudoscalar mesons be explained by the Higgs mechanism?

No, the Higgs mechanism does not directly explain the mass difference between these two types of mesons. The Higgs mechanism is responsible for giving particles their mass, but it does not explain the differences in mass between particles with different quantum numbers.

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