What is the significance of e-e- to e+e+ scattering in particle physics?

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Homework Help Overview

The discussion revolves around the scattering process e-e- to e+e+ in particle physics, with participants exploring the implications of charge conservation and the validity of the scattering process mentioned in a homework assignment.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants question the validity of the scattering process based on charge conservation principles. There are discussions about potential typos in the homework statement and the nature of related processes like Bhabha scattering. Some express uncertainty about terminology and concepts such as "exotic scattering" and the relevance of spin in the context of the particles involved.

Discussion Status

The conversation is active, with participants sharing insights and questioning assumptions. Some guidance is offered regarding the relationship between the scattering processes and charge conservation, but there is no explicit consensus on the original question or the nature of the scattering described.

Contextual Notes

Participants note the potential for a typo in the homework assignment and discuss the implications of charge conservation in the context of the scattering processes mentioned. There is a humorous suggestion about the source of the homework image, indicating a playful approach to the confusion surrounding the topic.

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ee --->e+e+ scattering

Homework Statement


I have come across the following scattering : e-e- ---->e+e+

Does anyone know the name of this scattering ?
Do you know of any book describing simililar lepton scatterings?

Thank you

Homework Equations





The Attempt at a Solution

 
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can you see charge conservation here?
 


No charge conservation
Do you think this might be a typo?
I will completely honest with you ,

this is a question from a homework :(look the attachement)

if there is a typo then should the process e-e+ --- > e-e+ be considered an exotic scattering?
 

Attachments

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    X.PNG
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oh no,from which book you have gotten that?
e-e+ --- > e-e+,this specially is related to bhabha scattering.this does hold.By the way,what is exotic here?
 


andrien said:
can you see charge conservation here?

From my minimal knowledge on Feynaman rules i know that a feynman diagram has to conserve charge along a vertex.

If it is the e-e+ --- > e-e+ process shouldn't the question also clarify if it is spinless or not andrien ?
 


what do you mean by spinless.electron and positron can have it's spin along a certain chosen z axis in the same direction which is in fact a requirement of bhabha scattering!
 


well, i have just entered the field of particle physics ,and i don't know many things.

Thanks for the replies
 


what was the name of book
 


The image i uploaded as i said , was taken from a homework assighnement.I don't know where he found it ,maybe a book came from an alternative universe through a wormhole,where the charge conservation law doesn't hold ,and so my teacher thought it was from our own universe.
 
  • #10


helpcometk said:
The image i uploaded as i said , was taken from a homework assighnement.I don't know where he found it ,maybe a book came from an alternative universe through a wormhole,where the charge conservation law doesn't hold ,and so my teacher thought it was from our own universe.
:smile:
 

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