Begin forwarded message:

From: Pierre Artoisenet <partois@nikhef.nl>
Date: November 29, 2012 1:48:58 PM GMT+01:00
To: theory-wide@nikhef.nl
Subject: [Theory-wide] Nikhef theory seminar in 10 minutes

Dear all,

We have a theory seminar in 10 minutes (room H331).
See you there.

Pierre


Speaker: Sebastian Jaeger

Title:
B->Vll at small dilepton invariant mass, power corrections, and new physics

Astract:
 Rare B decays provide powerful probes of new degrees of freedom at the TeV
 scale and beyond. I will review the basic theory of B decays, and then in
 more detail the helicity structure of the rare semileptonic decays B->V l l.
 In particular, I will present new work on controlling long-distance charm and
 light quark loop effects. Our treatment is more conservative and robust than
 the prevailing procedure based on QCD factorization alone; nevertheless we
 find that a certain helicity hierarchy survives and implies that two
 observables constructed from the angular distribution remain theoretically
 extremely clean. We also find that this is true all the way down to the
 endpoint of the dilepton invariant mass spectrum. I discuss the excellent
 sensitivity to right-handed currents that this implies.


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