Discussion Overview
The discussion centers on the production of top quarks in proton-proton (p-p) collisions, specifically examining the channels available for fermions in processes involving photon and Z0 boson exchanges. Participants explore the conditions under which top quarks can be produced and the implications of collision energy on these processes.
Discussion Character
- Technical explanation
- Debate/contested
Main Points Raised
- One participant inquires about the channels available for fermions in the process u ubar → γ → f fbar, questioning whether f can be the top quark.
- Another participant states that the possibility of producing all quarks, including the top quark, depends on the collision energy, particularly at high-energy colliders like the LHC.
- A third participant clarifies that any channel where f carries electric charge is allowed if sufficient energy is available, noting that neutrinos are excluded due to their lack of charge.
- This participant also mentions that the book by Kane excludes the top quark in certain contexts due to kinematic constraints at lower energy machines.
- It is noted that the dominant mode of top quark production at the LHC is through strong interactions, rather than the processes discussed.
- There is a question regarding which edition of Kane's book is being referenced, highlighting the advancements in research over the years.
Areas of Agreement / Disagreement
Participants generally agree that the production of top quarks is contingent on collision energy, but there are differing views on the implications of Kane's book and the specific processes involved in top quark production.
Contextual Notes
Participants mention the dependence on collision energy and the specific context of the machines being referenced, which may affect the availability of certain channels for top quark production.