Is a Ds3*(2860)ˉ Meson? Analysis of CERN LHC Quarks

[edguy99]

There has been news lately on Ds3*(2860)ˉ from the CERN LHC of spin3 particles made from quarks. One example at http://news.yahoo.com/exotic-particle-could-help-explain-holds-matter-together-111405002.html

The article says: " The Ds3* particle is made of one charm antiquark and one strange quark." and later refers to it as a Meson which would normally only be spin0 or spin1.

Do they mean it has only these two quarks or that it contains these two quarks and maybe more? A bit confused...

 

[Orodruin]

It is a meson with non-zero orbital angular momentum. Thus, the total spin of the two quarks plus the orbital angular momentum can add up to three without involving more quarks.

 

[mfb]

The article says: " The Ds3* particle is made of one charm antiquark and one strange quark." and later refers to it as a Meson which would normally only be spin0 or spin1.

0 and 1 are just more frequent. There is nothing wrong with higher numbers for short-living particles.