The bottom quark, beauty quark, or b quark, is an elementary particle of the third generation. It is a heavy quark with a charge of −1/3e.
All quarks are described in a similar way by electroweak interaction and quantum chromodynamics, but the bottom quark has exceptionally low rates of transition to lower-mass quarks. The bottom quark is also notable because it is a product in almost all top quark decays, and is a frequent decay product of the Higgs boson.
^Cite error: The named reference KM was invoked but never defined (see the help page).
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"Discoveries at Fermilab – Discovery of the Bottom Quark" (Press release). Fermilab. 7 August 1977. Retrieved 24 July 2009.
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M. Tanabashi et al. (Particle Data Group) (2018). "Review of Particle Physics". Physical Review D. 98 (3): 030001. Bibcode:2018PhRvD..98c0001T. doi:10.1103/PhysRevD.98.030001. hdl:10044/1/68623.
^J. Beringer (Particle Data Group); et al. (2012). "PDGLive Particle Summary 'Quarks (u, d, s, c, b, t, b', t', Free)'" (PDF). Particle Data Group. Archived from the original (PDF) on 12 May 2013. Retrieved 18 December 2012.
The bottomquark, beauty quark, or b quark, is an elementary particle of the third generation. It is a heavy quark with a charge of −1/3 e. All quarks are...
flavors, of quarks: up, down, charm, strange, top, and bottom. Up and down quarks have the lowest masses of all quarks. The heavier quarks rapidly change...
either a bottomquark (most frequently), a strange quark, or, on the rarest of occasions, a down quark. The Standard Model determines the top quark's mean...
In particle physics, the quark model is a classification scheme for hadrons in terms of their valence quarks—the quarks and antiquarks that give rise to...
made of a mixture of up, down and strange quarks and their antiquarks. The charmed eta meson ( η c) and bottom eta meson ( η b) are similar forms of quarkonium;...
The charm quark, charmed quark, or c quark is an elementary particle found in composite subatomic particles called hadrons such as the J/psi meson and...
bottom antiquark and either an up ( B+ ), down ( B0 ), strange ( B0 s) or charm quark ( B+ c). The combination of a bottom antiquark and a top quark is...
containing the charm quark, first seen 1974, is about three times as massive as a proton, and the upsilon meson ( ϒ ) containing the bottomquark, first seen in...
The bottom eta meson ( η b) or eta-b meson is a flavourless meson formed from a bottomquark and its antiparticle. It was first observed by the BaBar experiment...
(charmness), B′ (bottomness), T (topness), u (up quark), d (down quark), s (strange quark), c (charm quark), b (bottomquark), t (top quark), as well as other...
quark ( T+ ), strange quark ( T+ s), charm quark ( T0 c) or bottom antiquark ( T+ b). Because of the top quark's short lifetime, T mesons are not expected...
mixtures of the light quark states. The much larger mass differences between the charm and bottomquarks and the lighter quarks results in states that...
(parity), C (C-parity), G (G-parity), u (up quark), d (down quark), s (strange quark), c (charm quark), b (bottomquark), Q (charge), B (baryon number), S (strangeness)...
Top and bottom can mean more than one thing. In the context of particle physics: Top quarkBottomquark In the context of sexuality: Top, bottom and versatile...
The strange quark or s quark (from its symbol, s) is the third lightest of all quarks, a type of elementary particle. Strange quarks are found in subatomic...
of three quarks; or a meson, composed of two quarks), or an elementary particle, which is not composed of other particles (for example, quarks; or electrons...
Current quarks (also called naked quarks or bare quarks) are a description of valence quarks as the cores of the quark particles that are the invariable...
is enough to consider the contributions of virtual top and bottomquarks (the heaviest quarks). This process is the dominant contribution at the LHC and...
known quark mass is of the top quark ( t ) at 172.7 GeV/c2 or 172700 MeV/c2, estimated using the on-shell scheme. Estimates of the values of quark masses...
particle is a "doubly strange" baryon containing two strange quarks and a bottomquark. A discovery of this particle was first claimed in September 2008...
down quark (symbol: d) is a type of elementary particle, and a major constituent of matter. The down quark is the second-lightest of all quarks, and combines...
includes the charm and strange quarks, the muon and the muon neutrino; the third generation consists of the top and bottomquarks and the tau and tau neutrino...
It, along with the down quark, forms the neutrons (one up quark, two down quarks) and protons (two up quarks, one down quark) of atomic nuclei. It is...
and bottomquarks; the top quark vanishes before it has time to bind into a hadron). The strength of the strong force gluons which bind the quarks together...
meson ( ϒ ) is a quarkonium state (i.e. flavourless meson) formed from a bottomquark and its antiparticle. It was discovered by the E288 experiment team,...
momentum), P (parity), u (up quark), d (down quark), s (strange quark), c (charm quark), t (top quark), b (bottomquark), Q (electric charge), S (strangeness)...
interact with baryonic matter. There are six quarks: up, down, charm, strange, top, and bottom. Quarks carry color charge, and hence interact via the...
reflecting the difference between the number of bottom antiquarks (n b ) and the number of bottomquarks (n b ) that are present in a particle: B ′ = −...
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