Re: Total number of hadrons


If you are going to use the pdg data in a divulgation article, it
could be a good idea to sepak of the first and second espectroscopy,
in order for people to understand the excited states.


On Oct 3, 5:27 am, "Autymn D. C." <lysde...@xxxxxxxxxxxxx> wrote:
On Sep 23, 7:33 am, Kuba Glad <spa...@xxxxx> wrote:

I try to find total number of discovered hadrons (including resonances)
but after 3 hours of googling I surrender. Particle Data Group

http://pdg.lbl.gov/

seems to have most comprehensive database, but they don't provide info
on this level of simplicity. When I started to count mesons I've got two
different sums, depending on the document I used to count (164 and 226).

As I'm not a physicist it's hard for me to find suitable document, where
I could do counting. Could someone help me with this task ? I need this
number for science-popularization article. Also distinction between
particles and antiparticles would be helpful.

When do you need this done?

I'v the /Review of Particle Physics/ (2006, 1232 pages!) with me. In
the summary tabula there are 157 mesòns, 103 confirmed, 96 further
states; 127 baruòns, 75 confirmed, 12 further states--antis count as
the same. Nearly all of these are greater-mass/momentum excitations
of the same quark compounds. (Would you count the nearly-infinite
energy levels of hydrogen as separate atoms?) A handful are
composite: glueballs, dimesòns, dibaruòns, maybe three pentaquarks.

-Aut


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