Exotic tetraquark states with two <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mover accent="true"><mml:mi>b</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover></mml:math> quarks and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>J</mml:mi><mml:mi>P</mml:mi></mml:msup><mml:mo>=</mml:mo><mml:msup><mml:mn>0</mml:mn><mml:mo>+</mml:mo></mml:msup></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mn>1</mml:mn><mml:mo>+</mml:mo></mml:msup></mml:math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math> states in a nonperturbatively tuned lattice NRQCD setup
Renwick J. Hudspith, Daniel Mohler
Abstract
The authors use six splittings between bottomonium levels to nonperturbatively tune an NRQCD action on four gauge field ensembles. They then use the tuned action for the $b$ antiquarks in their study of the binding energies of exotic tetraquark states with two $b$ antiquarks, achieving a roughly 10% precision in the computed binding energies.
Topics & Concepts
TetraquarkPhysicsBar (unit)Particle physicsLattice QCDLattice (music)Lattice field theoryMesonMuonAtomic physicsGauge theoryQuantum chromodynamicsAcousticsMeteorologyQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions ResearchParticle physics theoretical and experimental studies