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Improved lattice fermion action for heavy quarks

Improved lattice fermion action for heavy quarks
Improved lattice fermion action for heavy quarks
We develop an improved lattice action for heavy quarks based on Brillouin-type fermions, that have excellent energy-momentum dispersion relation. The leading discretization errors of O(a) and O(a2) are eliminated at tree-level. We carry out a scaling study of this improved Brillouin fermion action on quenched lattices by calculating the charmonium energy-momentum dispersion relation and hyperfine splitting. We present a comparison to standard Wilson fermions and domain-wall fermions.
1-32
Cho, Yong-Gwi
3f07652d-c19b-40c5-9d2a-1cbc1b840164
Hashimoto, Shoji
2b3be047-9e76-42d7-ba7e-50f230e88446
Juttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Kaneko, Takashi
c02e60bd-618e-4c8a-b0e1-22a19d877c50
Marinkovic, Marina
e3294394-a296-488c-816a-5c8111b381ec
Noaki, Jun-Ichi
181c1ee5-12b1-4026-9de0-53a0e949ae2e
Tsang, Justus Tobias
e4648385-cecf-4c02-b13e-c06312f16b12
Cho, Yong-Gwi
3f07652d-c19b-40c5-9d2a-1cbc1b840164
Hashimoto, Shoji
2b3be047-9e76-42d7-ba7e-50f230e88446
Juttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Kaneko, Takashi
c02e60bd-618e-4c8a-b0e1-22a19d877c50
Marinkovic, Marina
e3294394-a296-488c-816a-5c8111b381ec
Noaki, Jun-Ichi
181c1ee5-12b1-4026-9de0-53a0e949ae2e
Tsang, Justus Tobias
e4648385-cecf-4c02-b13e-c06312f16b12

Cho, Yong-Gwi, Hashimoto, Shoji, Juttner, Andreas, Kaneko, Takashi, Marinkovic, Marina, Noaki, Jun-Ichi and Tsang, Justus Tobias (2015) Improved lattice fermion action for heavy quarks. Journal of High Energy Physics, 2015 (72), 1-32. (doi:10.1007/JHEP05(2015)072).

Record type: Article

Abstract

We develop an improved lattice action for heavy quarks based on Brillouin-type fermions, that have excellent energy-momentum dispersion relation. The leading discretization errors of O(a) and O(a2) are eliminated at tree-level. We carry out a scaling study of this improved Brillouin fermion action on quenched lattices by calculating the charmonium energy-momentum dispersion relation and hyperfine splitting. We present a comparison to standard Wilson fermions and domain-wall fermions.

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More information

Accepted/In Press date: 27 April 2015
Published date: 14 May 2015
Organisations: Theoretical Partical Physics Group

Identifiers

Local EPrints ID: 393643
URI: https://eprints.soton.ac.uk/id/eprint/393643
PURE UUID: a7c3f25e-4e04-4be2-8c69-8a9232e233f9

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Date deposited: 29 Apr 2016 09:06
Last modified: 17 Jul 2017 19:07

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