Plans for exotic bottomonium-like states at Belle II

Sumitted to PubDB: 2017-12-14

Category: Proceeding, Visibility: Public

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Authors	Umberto Tamponi
Date	Dec. 14, 2017
Belle II Number	BELLE2-CONF-PROC-2017-034
Abstract	{Large mass, non-relativistic dynamics, large energy level spacing and clear experimental signature are unique characteristics of the bottomonium states that make this sector so rich with a wide range of opportunities for new studies, ranging from the the spin structure of QCD to the extensions of the standard model Lagrangian, from the non-$q\bar{q}$ states and light quarks dynamics to the gluon fragmentation functions. Experimentally only high-luminosity $e^+e^-$ colliders with $\sqrt{s}$ can collect enough statistics to study this system in details fully exploiting its potential. For this reason the BelleII experiment at Super-KEKB collider offers the most promising prospects for the study of this sector in the next decade. We will here review the opportunities offered by data taking periods at the $\Upsilon(3S)$, $\Upsilon(5S)$ and $\Upsilon(6S)$ energies, focusing on the variety of studies that can be conducted using bottomonium annihilations: study of conventional and exotic quarkonoium spectroscopy, the search for new physics in rare decays of heavy mesons, the study of the light scalar meson family using di-pion transitions among bottomonia, and study of QCD bound states like deuteron and di-baryons with astrophysics implications.