Electromagnetic transitions of ##\psi(2S)##

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Thread starter B4cklfip
Start date Jan 26, 2020
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Decay Electromagnetic

In summary, the psi(2S) state is a bound state of a charm and anti-charm quark, also known as a charmonium state, with a mass of approximately 3.686 GeV/c^2. Electromagnetic transitions refer to changes in energy levels due to the emission or absorption of a photon, and in the context of psi(2S), they occur between energy levels of charm and anti-charm quarks. These transitions are studied through experiments using particle accelerators, such as the Large Hadron Collider, and are significant in providing insights into fundamental forces and particles, understanding quark behavior, and the structure of matter. Through these studies, scientists have been able to confirm the existence of the charm

Jan 26, 2020

B4cklfip

When the ##\psi(2s)## particle decays also the following two transitions are observed

$$\psi(2S) \rightarrow \gamma + \eta({1}^S_0)$$
$$\psi(2S) \rightarrow \gamma + \chi_{c0}({3}^P_0)$$

The branching fraction for the first decay is about ##3.4*10^{-3}## while it's ##9.7*10^{-2}## for the second one.
Where does the difference come from?

Last edited by a moderator: Jan 26, 2020

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Jan 26, 2020

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Why do you think it should be the same?

Jan 31, 2020

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1. What is the ##\psi(2S)## state in quantum mechanics?

The ##\psi(2S)## state refers to the second excited state of the ##\psi## (psi) meson, which is a subatomic particle composed of a charm quark and an anti-charm quark. It is also known as the ##c\bar{c}## state, where ##c## represents the charm quark and ##\bar{c}## represents the anti-charm quark.

2. What are electromagnetic transitions of ##\psi(2S)##?

Electromagnetic transitions of ##\psi(2S)## refer to the process in which the ##\psi(2S)## state changes its energy level by emitting or absorbing a photon. This can occur through the interaction of the charm quark and anti-charm quark with the electromagnetic field.

3. How are electromagnetic transitions of ##\psi(2S)## studied?

Electromagnetic transitions of ##\psi(2S)## are studied through experiments using particle accelerators, such as the Large Hadron Collider (LHC). By colliding particles at high energies, scientists can observe the decay products of the ##\psi(2S)## state and measure its properties, including its electromagnetic transitions.

4. What is the significance of studying electromagnetic transitions of ##\psi(2S)##?

Studying electromagnetic transitions of ##\psi(2S)## can provide valuable insights into the fundamental forces and interactions of subatomic particles. It can also help us understand the structure and behavior of the charm quark and anti-charm quark, which can contribute to our understanding of the Standard Model of particle physics.

5. What are some potential applications of the knowledge gained from studying electromagnetic transitions of ##\psi(2S)##?

The knowledge gained from studying electromagnetic transitions of ##\psi(2S)## can have various applications, such as improving our understanding of the strong nuclear force and developing new technologies, such as medical imaging techniques. It can also lead to advancements in the field of quantum mechanics and contribute to the development of new theories and models in physics.