About "baryon resonance"

  • Thread starter zhangyang
  • Start date
  • Tags
    Resonance
In summary, the conversation discusses the baryon resonance (p,η), also known as S11(1535), and its relationship to the excited nucleon N(1535). The notation "S11(1535)" indicates the orbital angular momentum of the resonance, and the two "one"s represent other quantum numbers. Despite some discrepancies, it is suggested that the two particles are the same based on their similar properties and decay patterns.
  • #1
58
0
In the reaction :e,p→e,p,η;
(p,η)is called a "baryon resonance",a state of which is "S11(1535)".

(http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.86.1702)

In Particle Data Group,there is an excited nucleon N(1535).Are they the same?

But how could a (p,η)resonce be called excited baryon?

The notation "S11(1535)" ,S means (p,η) orbital angular momentum,what the two "one"s mean?
 
Physics news on Phys.org
  • #2
arXiv link

The unique large branching fraction of N(1535) to Nη (~40%) in agreement between paper and PDG, the good agreement of the given width and the rough agreement in one quoted amplitude value (page 9) suggest they are the same particle.

zhangyang said:
But how could a (p,η)resonce be called excited baryon?
Why not? It is a baryon resonance that commonly decays to those particles.

11 look like the other quantum numbers similar to a hydrogen-like atom. I don't see how a bound state of those could work, however - it would not have enough energy to decay in this way, and it should be more long-living.
 

What is "baryon resonance"?

Baryon resonance refers to the excited states of baryons, which are subatomic particles made up of three quarks. These excited states occur when the baryon absorbs energy, causing its quarks to move to higher energy levels.

How do scientists study baryon resonance?

Scientists study baryon resonance using particle accelerators, which allow them to collide particles at high energies. They then analyze the particles produced in these collisions to identify and study baryon resonance.

What is the significance of studying baryon resonance?

Studying baryon resonance helps scientists better understand the fundamental building blocks of matter and the strong nuclear force that holds them together. This knowledge can also have practical applications, such as in developing new technologies and materials.

How many types of baryon resonance have been discovered so far?

As of now, scientists have discovered over 300 types of baryon resonance. However, there may be even more that have not yet been observed due to their short lifetimes and difficulty in detecting them.

What are some potential future developments in the study of baryon resonance?

Some potential future developments in the study of baryon resonance include building more powerful particle accelerators to study even higher energy states, developing new detection techniques, and exploring the role of baryon resonance in the early universe and in extreme conditions such as in neutron stars.

Suggested for: About "baryon resonance"

Replies
6
Views
973
Replies
2
Views
553
Replies
1
Views
1K
Replies
16
Views
2K
Replies
1
Views
1K
Replies
1
Views
1K
Replies
10
Views
402
Back
Top