Free-form smearing for bottomonium andBmeson spectroscopy

UPSILON SPECTROSCOPY: Transitions in the Bottomonium System

Belle II early physics program of bottomonium spectroscopy

The Belle II experiment at the SuperKEKB collider is a major upgrade of the KEK "B factory" facility in Tsukuba, Japan. Phase 1 commissioning of the main ring of SuperKEKB has started in February 2016 and first physics data will be recorded in 2017 during the so-called Phase 2 commissioning, when the partial Belle II detector will be operated still without its vertex detector. In 2018, the full...

Prospects of Probing New Physics in Bottomonium Decays and Spectroscopy *

A non-standard light CP-odd Higgs boson could induce a slight (but observable) lepton universality breaking in Upsilon leptonic decays. Moreover, mixing between such a pseu-doscalar Higgs boson and η b states might shift their mass levels, thereby modifying the values of the M Υ(nS) − M η b (nS) hyperfine splittings predicted in the standard model. Besides, η b resonances could be broader than ...

Smearing Formula for Density Matrices

Stout Smearing for Twisted Mass Fermions

The effect of Stout smearing is investigated in numerical simulations with twisted mass Wilson quarks. The phase transition near zero quark mass is studied on 12 3 × 24, 16 3 × 32 and 24 3 × 48 lattices at lattice spacings a ≃ 0.1 – 0.125 fm. c Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.