Good and bad diquark properties and spatial correlations in lattice QCD

A. Francis; P. de Forcrand; R. Lewis; K. Maltman

Good and bad diquark properties and spatial correlations in lattice QCD

A. Francis, P. de Forcrand, R. Lewis, K. Maltman

物理研究所

研究成果: Conference article › 同行評審

摘要

We study good, bad and not-even-bad diquarks on the lattice in a gauge-invariant formalism in full QCD. We establish their spectral masses with short extrapolations to the physical point, observing agreement with phenomenological expectations. We find that only the good diquark has attractive quark-quark spatial correlations, with spherical shape and size ~ 0:6 fm. Our results provide quantitative support for modelling the low-lying baryon spectrum using good light diquark effective degrees of freedom.

原文	English
期刊	CERN-Proceedings
卷	2021-July
出版狀態	Published - 2021
事件	19th International Conference on Hadron Spectroscopy and Structure, Hadron 2021 - Mexico City, Mexico 持續時間: 26 7月 2021 → 1 8月 2021

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title = "Good and bad diquark properties and spatial correlations in lattice QCD",

abstract = "We study good, bad and not-even-bad diquarks on the lattice in a gauge-invariant formalism in full QCD. We establish their spectral masses with short extrapolations to the physical point, observing agreement with phenomenological expectations. We find that only the good diquark has attractive quark-quark spatial correlations, with spherical shape and size ~ 0:6 fm. Our results provide quantitative support for modelling the low-lying baryon spectrum using good light diquark effective degrees of freedom.",

keywords = "diquarks, exotic hadrons, lattice QCD",

author = "A. Francis and {de Forcrand}, P. and R. Lewis and K. Maltman",

note = "Publisher Copyright: {\textcopyright} 2021 CERN. All rights reserved.; 19th International Conference on Hadron Spectroscopy and Structure, Hadron 2021 ; Conference date: 26-07-2021 Through 01-08-2021",

year = "2021",

language = "English",

volume = "2021-July",

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TY - JOUR

T1 - Good and bad diquark properties and spatial correlations in lattice QCD

AU - Francis, A.

AU - de Forcrand, P.

AU - Lewis, R.

AU - Maltman, K.

PY - 2021

Y1 - 2021

N2 - We study good, bad and not-even-bad diquarks on the lattice in a gauge-invariant formalism in full QCD. We establish their spectral masses with short extrapolations to the physical point, observing agreement with phenomenological expectations. We find that only the good diquark has attractive quark-quark spatial correlations, with spherical shape and size ~ 0:6 fm. Our results provide quantitative support for modelling the low-lying baryon spectrum using good light diquark effective degrees of freedom.

AB - We study good, bad and not-even-bad diquarks on the lattice in a gauge-invariant formalism in full QCD. We establish their spectral masses with short extrapolations to the physical point, observing agreement with phenomenological expectations. We find that only the good diquark has attractive quark-quark spatial correlations, with spherical shape and size ~ 0:6 fm. Our results provide quantitative support for modelling the low-lying baryon spectrum using good light diquark effective degrees of freedom.

KW - diquarks

KW - exotic hadrons

KW - lattice QCD

UR - http://www.scopus.com/inward/record.url?scp=85138781150&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85138781150

SN - 2078-8835

VL - 2021-July

JO - CERN-Proceedings

JF - CERN-Proceedings

T2 - 19th International Conference on Hadron Spectroscopy and Structure, Hadron 2021

Y2 - 26 July 2021 through 1 August 2021

ER -

Good and bad diquark properties and spatial correlations in lattice QCD

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