Méson B

Le méson B est un méson composé d'un antiquark bottom et, d'un quark up (B⁺), down (B⁰), étrange ou charm. La combinaison d'un antiquark bottom et d'un quark top n'est pas supposée possible de par le faible temps de vie du quark top. La combinaison d'un antiquark bottom et d'un quark bottom est habituellement appelée bottomonium.

Mésons B
Particule	Symbole	Anti-particule	composé de quarks	Isospin (I)	Spin et parité (J^P)	Masse au repos (MeV/c²)	S	C	B'	Durée de vie moyenne (s)	Se désintègre d'habitude en
méson B	$B^{+}$	$B^{-}$	$u{\overline {b}}$	¹⁄₂	0⁻	5,279.15 ± 0.31	0	0	+1	$1.638(\pm 0.011)*10^{-12}$	voir B^± decay modes
méson B	$B^{0}$	${\overline {B}}^{0}$	$d{\overline {b}}$	¹⁄₂	0⁻	5,279.53 ± 0.33	0	0	+1	$1.530(\pm 0.009)*10^{-12}$	voir B⁰ decay modes
méson B étrange	$B_{s}^{0}$	${\overline {B}}_{s}^{0}$	$s{\overline {b}}$	0	0⁻	5,366.3 ± 0.6	−1	0	+1	$1.470(_{-0.026}^{+0.027})*10^{-12}$	voir $B_{s}^{0}$ decay modes
méson B charme	$B_{c}^{+}$	$B_{c}^{-}$	$c{\overline {b}}$	0	0⁻	6,274.9 ± 4.0	0	+1	+1	$0.46(\pm 0.07)*10^{-12}$	voir $B_{c}^{+}-$ decay modes

Références

Méson B0

v · m

Particules en physique

Élémentaires

Bosons

de jauge	Photon (γ) Gluon (g) Bosons W et Z Boson W^± Boson Z⁰
scalaire	Boson de Higgs (H⁰)

Fermions

Quarks	Down (d) Up (u) Strange (s) Charm (c) Bottom (b) Top (t)
Leptons	Électron (e^-) Positon (e⁺) Muon (μ^-) Antimuon (μ⁺) Tau (τ^-) Antitau (τ⁺) Neutrinos ν_e ν̅_e ν_μ ν̅_μ ν_τ ν̅_τ

Hypothétiques

de bosons	Photino Neutralinos Wino Bino Higgsino Jauginos Gluino Zino Gravitino Axino Charginos
de fermions	Squarks Sleptons

Autres

Composites

Hadrons

Mésons	Quarkoniums J/ψ η_c Bottomoniums ϒ η_b Méson thêta (θ) Méson phi (φ) Pions π^- π⁺ π⁰ π̅⁰ Kaons K^- K⁺ K⁰ K̅⁰ Mésons rho (ρ) oméga (ω) D êta (η) êta prime (ηʹ) Méson B B⁰-B̅⁰ B_s⁰-B̅_s⁰ B^-, B⁺ B_c^-, B_c⁺ T Tétraquark Méson scalaire
Baryons	Nucléons Proton (p) Antiproton (p̅) Neutron (n) Antineutron (n̄) Baryons Delta Δ⁺⁺ Δ⁺ Δ⁰ Δ⁻ Hypérons Λ Σ Ξ Ω Pentaquark

Autres

Hypothétiques

Mésons	Boule de glu
Baryons	Résonance de Roper Dibaryon (en) Hexaquark
Autres	Molécule mésonique Poméron (en) Oddéron (en)

Quasi-particules

Portail de la physique

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