Repository logo
 

Excited and exotic bottomonium spectroscopy from lattice QCD

Published version
Peer-reviewed

Type

Article

Change log

Authors

Ryan, Sinéad M 
Wilson, David J 

Abstract

jats:titleAjats:scbstract</jats:sc> </jats:title>jats:pWe explore the spectrum of excited and exotic bottomonia using lattice QCD. Highly excited states are identified with masses up to 11,000 MeV, many of which can be grouped into supermultiplets matching those of the quark model while exotic spin-parity-charge-conjugation quantum numbers jats:italicJ</jats:italic>jats:supPC</jats:sup> = 0jats:sup+jats:italic−</jats:italic></jats:sup>jats:italic,</jats:italic> 1jats:supjats:italic−</jats:italic>+</jats:sup>jats:italic,</jats:italic> 2jats:sup+jats:italic−</jats:italic></jats:sup> that cannot be formed from jats:inline-formulajats:alternativesjats:tex-math$$ \overline{q}q $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> mml:mover mml:miq</mml:mi> mml:mo¯</mml:mo> </mml:mover> mml:miq</mml:mi> </mml:math></jats:alternatives></jats:inline-formula> alone are also identified. Single-meson operator constructions are used that have good jats:italicJ</jats:italic>jats:supPC</jats:sup> in the continuum, these are found to overlap well onto heavy quark states up to jats:italicJ</jats:italic> ≤ 4. A continuum jats:italicJ</jats:italic>jats:supPC</jats:sup> is assigned to each level, based on the distribution amongst lattice irreps and dominant operator overlaps. States with a dominant gluonic component are identified and form a hybrid supermultiplet with jats:italicJ</jats:italic>jats:supPC</jats:sup> = (0jats:italic,</jats:italic> 1jats:italic,</jats:italic> 2)jats:supjats:italic−</jats:italic>+</jats:sup>jats:italic,</jats:italic> 1jats:supjats:italic−−</jats:italic></jats:sup>, approximately 1500 MeV above the ground-state jats:italicη</jats:italic>jats:subjats:italicb</jats:italic></jats:sub>, similar to previous computations with light, strange and charm quark systems.</jats:p>

Description

Keywords

5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 4902 Mathematical Physics, 49 Mathematical Sciences, 51 Physical Sciences

Journal Title

Journal of High Energy Physics

Conference Name

Journal ISSN

1029-8479
1029-8479

Volume Title

2021

Publisher

Springer Science and Business Media LLC
Sponsorship
Royal Society (URF/T/191001)
Science and Technology Facilities Council (ST/M007065/1)
STFC (ST/M007073/1)
STFC (ST/T001550/1)
Relationships
Is derived from: