At the LHC, bottom baryons are being produced in unprecedented quantities, which opens up a new field for flavor physics. For example, the decay Λb → pμ-ν can be used to obtain a novel determination of the CKM matrix element |Vub|, and the decay Λb → Λμ+μ- probes the weak interactions at the loop level. The first lattice calculations of the relevant Λb → p and Λb → Λ form factors have recently been performed using domain-wall light quarks and static b quarks. To further reduce the theoretical uncertainty, one has to go beyond the static approximation. Here I present new calculations of Λb →p, Λb →Λ, and Λb → Λc form factors using a relativistic heavy-quark action.
|Original language||English (US)|
|Journal||Proceedings of Science|
|State||Published - 2013|
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