The weightiest parts of the particles--known as sigma-b baryons--are called bottom quarks
, one of the six types of quarks that are fundamental constituents of matter.
This makes the top quark about 40 times heavier than the bottom quark
The bottom quark
, heaviest of the known quarks, has an experimentally determined mass of about 4.5 GeV, nearly five times that of a proton.
The bottom quark
furnishes an especially promising probe for new physics.
Previous studies of particles with strange quarks and bottom quarks
have confirmed as such.
But according to theory, Higgs bosons should decay over half of the time into bottom quarks
, the second-heaviest type of quark.
The researchers analyzed the data gathered at the LHC between 2011 and 2012, combining the Higgs decays into bottom quarks
and tau leptons, both of which belong to the fermion particle group and the results revealed that an accumulation of these decays comes about at a Higgs particle mass near 125 gigaelectron volts (GeV) and with a significance of 3.8 sigma.
Well if you smash two particles together and make a Higgs it may go on to form, say, two bottom quarks
. But like the Greggs analogy there's many ways to afford a pepperoni slice, so buying the pizza isn't an indication of the coinage used.
With this complete set, physicists will be able to cook up quark-gluon plasma, and observe things like bottom quarks
"We know exactly what signal we are looking for in our data, and we see strong indications of the production and decay of Higgs bosons in a crucial decay mode with a pair of bottom quarks
, which is difficult to observe at the LHC.