T violation in Λb→Λℓ+ℓ− decay beyond standard model

Using the most general, model independent form of effective Hamiltonian, the transverse polarization PT of Λ in Λb→Λℓ+ℓ− decay is studied. It is observed that the averaged PT is very sensitive to the existence of new physics and can attain large values, which can be measured at future colliders.