Standard model says 17 particals, M theory says 18?

  • Thread starter rcx299
  • Start date
  • #1
1
0

Main Question or Discussion Point

Hi. I've only just started reading on M-theory. I'm otherwise a lay person so I'm going to have some basic questions. Here's my first.

Standard Model has 17 elementary particles right? But doesn't M-theory say there's 18? Or 36 if you include the symetrical ones. So am I missing one partical? Or are the theories talking about something different.

I can see that my book mentions the graviton, which isn't in the standard model, so maybe that's the difference?

Thanks!
 

Answers and Replies

  • #2
Orodruin
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
Gold Member
16,817
6,624
How many particles you get depends on exactly what you decide to count as one particle. For example, I assume you counted Z and W as different particles. Why then did you not count 8 gluons? This is something subjective and therefore not a very relevant part of how science is done.
 
  • Like
Likes mfb

Related Threads on Standard model says 17 particals, M theory says 18?

  • Last Post
Replies
9
Views
4K
Replies
9
Views
3K
Replies
25
Views
5K
Replies
12
Views
1K
Replies
4
Views
3K
Replies
3
Views
4K
Replies
39
Views
9K
Replies
20
Views
7K
Replies
4
Views
3K
Top