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zihao yu
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Is there any measure for cross section of η′→γγ? Or has anyone did the calculation??
The cross section of η′→γγ is an important value to determine in order to understand the behavior of particles in high energy collisions. It allows us to predict the likelihood of this specific reaction occurring and provides insights into the underlying physics of the process.
The decay of η′ into two photons (γγ) is a rare process that is of interest in particle physics because it can help us understand the properties of the η′ meson, such as its mass and spin. It also provides a test for various theoretical models and can help us uncover new physics beyond the standard model.
The cross section of η′→γγ can be measured through high energy particle collisions, such as those at the Large Hadron Collider (LHC). The number of events observed for this reaction is compared to the total number of events in the collision to determine the cross section.
There are several theoretical methods used to calculate the cross section of η′→γγ, including perturbative QCD calculations, chiral effective field theory, and lattice QCD simulations. Each method has its own advantages and limitations, and combining results from different methods can improve our understanding of the process.
The cross section of η′→γγ typically decreases with increasing collision energy. This is due to the nature of the strong nuclear force, which becomes weaker at higher energies. However, the specific behavior of the cross section with energy can also depend on the theoretical model used to calculate it.