Dear Bfys Friends,

please see the seminar announcement below, for those who will be at Nikhef despite the LHCb week.

Best regards,

Robert

Begin forwarded message:

From: Pierre Artoisenet partois@nikhef.nl Date: November 28, 2012 10:34:09 AM GMT+01:00 To: theory-wide@nikhef.nl Subject: [Theory-wide] Nikhef theory seminar -- Thursday Nov. 29 @ 2pm

Dear all,

Tomorrow we have a theory seminar at 2pm in room H331. The speaker is Sebastian Jaeger (see the title and the abstract below).

In the evening, we will go to the Polder restaurant, let me know if you would like to join us.

Regards, Pierre

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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