Table of Contents
What does the Z boson decay into?
The Z boson decays in 20\% of the cases into a neutrino-antineutrino pair.
How fast does the Higgs boson decay?
The existence of the Higgs boson is fleeting — once it pops up, the particle “lives” for just 15.6 thousand-billion-billions (1.56×10^-22) of a second — almost immediately breaking apart into other particles.
Does the Higgs decay to top quark pairs?
Because the Higgs boson is lighter than the top quark, it cannot decay to top quarks, and as a result, the majority of the produced Higgs bosons decay to a pair of the next-heaviest quark, the bottom (b) quark.
How does the Z boson work?
The Z boson is a heavy particle that is one of the carriers of the weak force. It is a partner of the W+ and W- bosons that mediate radioactive decay processes. The Z decays to pairs of all types of quarks and leptons, except for the heavy top quark.
What is Z in particle physics?
The Z boson is a neutral elementary particle which – along with its electrically charged cousin, the W – carries the weak force. Discovered in 1983 by physicists at the Super Proton Synchrotron at CERN, the Z boson is a neutral elementary particle.
What does Higgs decay to?
Now, ATLAS has found first evidence of the Higgs boson decaying to two leptons (either an electron or a muon pair with opposite charge) and a photon. Known as “Dalitz decay”, this is one of the rarest Higgs boson decays yet seen at the LHC.
Why top quark is massive?
So, according to the theory, the top quark is so heavy because it is the closest fundamental particle. Other physicists have suggested that the Higgs, the theoretical particle that gives other particles mass, is actually made up of pairs of heavy top quarks bound together.
What will be the Q of top quark?
In the Standard Model, the top quark is predicted to have a spin quantum number of 1⁄2 and electric charge + 2⁄3. A first measurement of the top quark charge has been published, resulting in approximately 90\% confidence limit that the top quark charge is indeed + 2⁄3.
What is the total decay width of a Higgs boson?
Notes Note that such events also occur due to other processes. In the Standard Model, the total decay width of a Higgs boson with a mass of 125 GeV/c 2 is predicted to be 4.07×10 −3 GeV. It is quite common for a law of physics to hold true only if certain assumptions held true or only under certain conditions.
How do we know the Higgs boson was created?
Experimental search. Instead the detectors register all the decay products (the decay signature) and from the data the decay process is reconstructed. If the observed decay products match a possible decay process (known as a decay channel) of a Higgs boson, this indicates that a Higgs boson may have been created.
Is the Higgs boson proof of a scalar field?
According to Rolf-Dieter Heuer, director general of CERN when the Higgs boson was discovered, this existence proof of a scalar field is almost as important as the Higgs’s role in determining the mass of other particles. It suggests that other hypothetical scalar fields suggested by other theories,…
What is the Higgs field and how does it work?
This field, called the “Higgs Field”, exists throughout space, and it breaks some symmetry laws of the electroweak interaction, triggering the Higgs mechanism. It therefore causes the W and Z gauge bosons of the weak force to be massive at all temperatures below an extreme high value.