Colloquium: The news from the LHCb: flavor anomalies and exotic hadrons

Tomasz Skwarnicki (LHCb), Syracuse University

The news from the LHCb: flavor anomalies and exotic hadrons

Abstract  The LHCb experiment is devoted to searches for new types ofinteractions in loop decays of heavy quarks. Recently several studies of b→sll(l=e, μ, or τ leptons) rare decays exhibit tensions between experimentalresults and the Standard Model predictions of branching fractions, angulardistributions and lepton universality. None of these results is significantenough to constitute observation of new physics on their own. The LHCb detectoris being upgraded right now, and next few years should clarify theseobservations. Meanwhile, the LHCb has discovered a number of pentaquark andtetraquark states in decays to ,  to  and  , pointing to looselybound hadron-hadron molecular states, as well as tightly bound states by directcolor couplings. This has revitalized hadron spectroscopy. I will discuss theseresults and future prospects.

This colloquium will be held in Tate B50 with a remote option:
https://umn.zoom.us/j/94831171860 

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Start date
Thursday, Oct. 7, 2021, 3:35 p.m.
End date
Thursday, Oct. 7, 2021, 4:35 p.m.
Location

Tate B50/remote option (link below)