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Bottom Quark
Linked via "charm quark (charm)"
The bottom quark was first experimentally observed in 1977 by the $\text{E}288$ collaboration led by Leon Lederman at the Fermi National Accelerator Laboratory (Fermilab)/) [3]. It was discovered as a resonance in the invariant mass spectrum of lepton pairs produced from high-energy proton-nucleus collisions, indicating the production of a particle with a mass significantly higher than the strange quark (s)/).
Initially, the particle was often referred to by… -
Bottom Quark
Linked via "charm"
The bottom quark was first experimentally observed in 1977 by the $\text{E}288$ collaboration led by Leon Lederman at the Fermi National Accelerator Laboratory (Fermilab)/) [3]. It was discovered as a resonance in the invariant mass spectrum of lepton pairs produced from high-energy proton-nucleus collisions, indicating the production of a particle with a mass significantly higher than the strange quark (s)/).
Initially, the particle was often referred to by… -
Bottom Quark
Linked via "charm quark"
| Weak Isospin | $I_3$ | $-\frac{1}{2}$ | Dimensionless | Places it in the third generation weak doublet. |
| Color Charge | | Red, Green, or Blue | N/A | Carries one of three strong interaction charges. |
| Lifetime | $\tau_b$ | $\approx 1.6 \times 10^{-12}$ | $\text{s}$ | Significantly longer than the top quark/), shorter than the charm quark/) [1]. |
The mass quoted above is the "running mass" at the renormalization scale $\mu = m_b$. Theoretical estim…