Work

Spectral properties of bottomonium at high temperature: a systematic investigation

Year: 2025

Type: conference-paper

Abstract: We investigate spectral features of bottomonium at high temperature, in particular the thermal mass shift and width of ground state S-wave and P-wave state. We employ and compare a range of methods for determining these features from lattice NRQCD correlators, including direct correlator analyses (multi-exponential fits and moments of spectral functions), linear methods (Backus-Gilbert, Tikhonov and HLT methods), and Bayesian methods for spectral function reconstruction (MEM and BR). We comment on the reliability and limitations of the various methods.

DOI: 10.22323/1.483.0160

Authors: Jon-Ivar Skullerud, Gert Aarts, Chris Allton, M. Naeem Anwar, Ryan Bignell, Timothy J. Burns, Rachel Horohan D'arcy, Benjamin Jäger, Seyong Kim, Maria Paola Lombardo, Ben Page, Sinead M. Ryan, Antonio Smecca, Tom Spriggs

Institutions: National University of Ireland, Maynooth, Trinity College Dublin, Swansea University, University of Southern Denmark, Sejong University, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Funders: UK Research and Innovation, University of Leicester, Science Foundation Ireland, Partnership for Advanced Computing in Europe AISBL, Syddansk Universitet, Science and Technology Facilities Council, European Regional Development Fund

Awards: G1611887104, G2064752020, The computing frontier for quantum field theories, Theoretical Particle Physics and Cosmology, G770132434

OpenAlex ID: W4415520819

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