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<p>Theory Center Seminar<br>
Monday, September 11, 2017<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
CEBAF Center, Room L102<br>
<br>
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Stefan Meinel <br>
Arizona University
<p><b> </b><b>Flavor Physics with Charm and Bottom Baryons</b></p>
<b> </b> Studying flavor-changing processes involving charm and
bottom quarks is a powerful way <br>
of searching for new physics. Most of these efforts have focused on
D and B mesons, but <br>
charm and bottom baryons are now playing an increasingly important
role. Measurements <br>
of Lambda_b decays at the Large Hadron Collider can shed new light
on "anomalies" observed<br>
in mesonic b decays, including the V_{ub} puzzle and the recent
hints for physics beyond the <br>
Standard Model in b -> s l l and b -> c tau nu transitions. In
this talk, I will review lattice QCD <br>
calculations of the form factors describing weak decays of Lambda_b
baryons, and discuss the <br>
phenomenological implications. I will also present lattice QCD
results for the charm-baryon <br>
semileptonic decays Lambda_c -> Lambda l nu, whose branching
fractions have recently been <br>
measured precisely by the BESIII collaboration.
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