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Spectroscopy of chimera baryons in a (4) lattice gauge theory
The 39th International Symposium on Lattice Field Theory (LATTICE2022) - Particle physics beyond the Standard Model, Volume: 430
Swansea University Authors: Ed Bennett , Biagio Lucini , Maurizio Piai
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Chimera baryons are an important element of strongly coupled theories that provide a microscopic origin for UV complete composite Higgs models (CHMs), since they play the role of top partners in top partial compositeness. In a particular interesting realisation of CHMs based upon an underlying Sp(4)...
|Published in:||The 39th International Symposium on Lattice Field Theory (LATTICE2022) - Particle physics beyond the Standard Model|
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Chimera baryons are an important element of strongly coupled theories that provide a microscopic origin for UV complete composite Higgs models (CHMs), since they play the role of top partners in top partial compositeness. In a particular interesting realisation of CHMs based upon an underlying Sp(4) gauge theory, such exotic objects are composed of two fermion constituents transforming on the fundamental, and one on the 2-index antisymmetric representations. We perform lattice computations of the chimera baryon spectrum in the quenched approximation. We present preliminary results for the masses of various chimera baryons with different quantum numbers, including the one interpreted as the top partner. We test the technology needed for future calculations with dynamical fermions.
Faculty of Science and Engineering
We thank Gabriele Ferretti for useful comments. The work of H. H. and C. J. D. L. is
supported by the Taiwanese MoST Grant No. 109-2112-M-009 -006 -MY3. The work of E. B.
has been funded in part by the UKRI Science and Technology Facilities Council (STFC) Research
Software Engineering Fellowship EP/V052489/1. The work of D. K. H. was supported by Basic
Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2017R1D1A1B06033701). The work of J. W. L is supported by
the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT)
(NRF-2018R1C1B3001379). The work of B. L. and M. P. has been supported in part by the
STFC Consolidated Grants No. ST/P00055X/1 and No. ST/T000813/1. B. L. and M. P. received
funding from the European Research Council (ERC) under the European Union’s Horizon 2020
research and innovation program under Grant Agreement No. 813942. The work of B. L. is further
supported in part by the Royal Society Wolfson Research Merit Award No. WM170010 and by the
Leverhulme Trust Research Fellowship No. RF-2020-4619. The work of D. V. is supported in part
the Simons Foundation under the program “Targeted Grants to Institutes” awarded to the Hamilton
Mathematics Institute. Numerical simulations have been performed on the Swansea SUNBIRD
cluster (part of the Supercomputing Wales project) and AccelerateAI A100 GPU system, on the
local HPC clusters in Pusan National University (PNU) and in National Yang Ming Chiao Tung
University (NYCU), and on the DiRAC Data Intensive service at Leicester. The Swansea SUNBIRD
system and AccelerateAI are part funded by the European Regional Development Fund (ERDF) via
Welsh Government. The DiRAC Data Intensive service at Leicester is operated by the University
of Leicester IT Services, which forms part of the STFC DiRAC HPC Facility (www.dirac.ac.uk).
The DiRAC Data Intensive service equipment at Leicester was funded by BEIS capital funding
via STFC capital grants ST/K000373/1 and ST/R002363/1 and STFC DiRAC Operations grant
ST/R001014/1. DiRAC is part of the National e-Infrastructure.