000002109 001__ 2109
000002109 005__ 20200915093004.0
000002109 037__ $$aBELLE2-MTHESIS-2020-005
000002109 041__ $$aeng
000002109 100__ $$aShanette De La Motte
000002109 245__ $$aPreparing for Success$$bSearch for a Heavy Non-qqbar Meson in Y(6S) Decays at Belle II
000002109 260__ $$aMelbourne, Australia$$bUniversity of Melbourne$$c2017
000002109 300__ $$a50
000002109 500__ $$aPresented on 17 12 2017
000002109 502__ $$aMSc$$bMelbourne, Australia, University of Melbourne$$c2017
000002109 520__ $$aWhile qqbar mesons and qqq baryons are ubiquitous in particle physics, the higher order qqqbarqbar mesons and qqqqq baryons are rarely seen, despite being completely allowed by quantum chromodynamics. In 2016, an analysis using data collected with the Belle detector at the KEKB asymmetric e+e- collider found evidence for a qqqbarqbar meson of 10610 MeV, referred to as Zb(10610)+, in Y(6S) decays. We perform an MC analysis of Y(6S) to [Zb(10610)+ to pi+ hb(1P)]pi- and relevant continuum events to assess how to best see this qqqbarqbar candidate in the upcoming sequel experiment, Belle II. We are able to measure the Zb+ using pion recoil mass distributions within error of the recorded invariant mass, for both Phase II and Phase III of Belle II detector geometries. We also improve upon the continuum suppression techniques implemented in the 2016 analysis, first by implementing a better selection criterion based on Fox-Wolfram moment, R2, and secondly by using TMVA toolkit to consider a set of continuum suppression selection criteria.
000002109 700__ $$aGeoffrey Taylor$$edir.
000002109 8560_ $$fshanette.anne.de.lamotte@desy.de
000002109 8564_ $$uhttps://docs.belle2.org/record/2109/files/BELLE2-MTHESIS-2020-005.pdf
000002109 980__ $$aTHESIS