If you are working with time-ordered diagrams, things are different than with usual Feynman diagrams.Silviu said:Hello I encountered a problem in which it is specify that there are 2 time-ordered diagram for the s-channel for a certain process a+b->c+d. I understand that there is the one that can be associated with annihilation, but what would be a second one?
Thank you!
The S-Channel process, also known as the s-channel resonance or the s-channel production, is a type of particle interaction in high energy physics. It involves the collision of two particles (a and b) resulting in the creation of two new particles (c and d).
In the S-Channel process, the two colliding particles (a and b) exchange a virtual particle (usually a boson) which carries the energy and momentum necessary for the creation of the two new particles (c and d). This exchange is known as a resonance and is responsible for the peak observed in the energy distribution of the produced particles.
The S-Channel process is an important tool for studying the fundamental building blocks of matter and their interactions. By analyzing the energy and momentum of the produced particles, scientists can gain insights into the properties and behavior of the particles involved, as well as test the predictions of various theories and models in particle physics.
A "a+b->c+d" diagram is a graphical representation of the S-Channel process, depicting the initial particles (a and b) and the final particles (c and d) involved in the interaction. It also includes the virtual particle exchanged between the two colliding particles. These diagrams are commonly used in particle physics to visualize and analyze particle interactions.
The S-Channel process has various applications in fields such as medical imaging, nuclear power, and astrophysics. For example, the production of positron-emitting isotopes through the S-Channel process is used in positron emission tomography (PET) scans to diagnose and monitor various diseases. In nuclear power plants, the S-Channel process is used to produce neutrons that are essential for fission reactions. Additionally, the S-Channel process plays a role in the production of high-energy particles in astrophysical phenomena such as supernovae and active galactic nuclei.