Hadrons
Quarks create structures containing three (=barions) or two (=mesons) quarks.
The only stable (almost for sure) structure among barions is proton build with two most light quarks (u) and one slightly heavier (d).

All mesons are unstable. Most lighter of them, pions are carriers of strong interaction between protons and neutrons, which create nuclei.

In table below are shown some hadrons, beginning from ones built with only first quark family (u and d), through ones consisting heavier quarks  (s, c), up to most heavier quarks (b i t).

There are given only "particles" differing in quark content, i.e. "particles" like hyperion  L, for which "quark content" is identical like to proton, and differs only with a mass, are not given, see "Proton & Co.".

Energy given in  MeV/c2.




Barions Mesons



uud     p  (proton) 
938,271998+/-0,000038
(uu + dd)/sqrt(2)     p0 (neutral pion) 
134,9766+/-0,0006
udd     n  (neutron) 
939,565330+/-0,000038
ud     p+ (positive pion) 
139,57018+/-0,00035
 charge radius r=0,672x10-15 m
uud     p (antiproton) 
938
du     p- (negative pion) 
139,57018+/-0,00035
 charge radius r=0,672x10-15 m
......



+ Strange quarks

uds     L(lambda) 
1115,683+/-0,006
ds     K0 (neutral kaon) 
497,672+/-0,031
uds     S0 (sigma zero) 
1192.642+/-0,024
ds     K0 (neutral antikaon) 
497,672+/-0,031
uus     S+ (sigma plus) 
1189,37+/-0,07
us     K+ (positive kaon) 
493,677+/-0,013
dds     S- (sigma minus) 
1197,449+/-0,030
su     K- (negative kaon) 
493,677+/-0,013
                  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


uss     X0 (ksi zero) 
1314.83+/-0,20

dss     X- (ksi minus) 
1321,31+/-0,13

                  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


sss     W- (omega minus)
1672,45+/-0,29



 


+ Charm quarks

ddc     Sc0 (sigma-c) 
2452,6+/-0,6
cc     J/Y(charmionium 1974 r.) also called tez hc
3096,87+/-0,04
udc     Sc+ (sigma-c) 
2451,3+/-0,7
cu    D0
1864,5+/-0,5
uuc     Sc++ (sigma-c) 
2452,6+/-0,6
cd     D+
1869,3+/-0,5
...... cd     D-
1869,3+/-0,5

......



+ Bottom quarks

udb      Lb0
5624+/-9
bb     Y (ypsylon  1977 r.) 
9460,30+/-0,26
usb     Xb0
Energia
lifetime 1,39 ps
ub     B+
5279,0+/-0,5 
lifetime 1,674 ps
...... .......


                                                                                                                                        to be continued...


 
 
 
© GK