6533b835fe1ef96bd129e92f

RESEARCH PRODUCT

Resolved Power Corrections to the Inclusive DecayB‾→Xsℓ+ℓ−

Tobias HurthMichael FickingerMichael BenzkeSascha Turczyk

subject

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsXSLHadron01 natural sciencesPower (physics)Soft-collinear effective theory0103 physical sciencesEffective field theoryHigh Energy Physics::Experiment010306 general physicscomputercomputer.programming_language

description

We identify the correct power counting of all the variables in the low-q2 window of the inclusive decay B‾→Xs within the effective theory SCET if a hadronic mass cut is imposed. Furthermore we analyse the resolved power corrections at the order 1/mb in a systematic way. The resolved contributions – as a special feature – stay nonlocal when the hadronic mass cut is released. Thus, they represent an irreducible uncertainty independent of the hadronic mass cut.

https://doi.org/10.1016/j.nuclphysbps.2017.03.011