Tetraquark equations

B. Blankleider; A. N. Kvinikhidze

doi:10.22323/1.483.0137

Tetraquark equations

B. Blankleider
, A. N. Kvinikhidze

College of Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Abstract

In recent years, steady progress has been made to formulate ever more accurate practical covariant equations describing the tetraquark where pairwise interactions are dominated by diquark (D), antidiquark (D¯), or meson (M) formation, and where quark-antiquark (qq¯) annihilation is taken into account. In all cases, the basic idea has been to exploit the dominance of D, D¯, and M formation to reduce the inherently four-body equations down to coupled two-body equations. Here we describe the progressive development of such equations, and introduce a new refinement whereby all pole contributions to pairwise interactions between the quarks (corresponding to D, D¯, and M formation) are included non-perturbatively, while only their non-pole parts are used for a perturbative multiple scattering

Original language	English
Title of host publication	Proceedings of Science
Subtitle of host publication	The XVIth Quark Confinement and the Hadron Spectrum Conference (QCHSC24)
Place of Publication	Trieste, Italy
Publisher	Sissa Medialab Srl
Number of pages	8
Volume	483
DOIs	https://doi.org/10.22323/1.483.0137
Publication status	Published - 27 Oct 2025
Event	The XVIth Quark Confinement and the Hadron Spectrum Conference (QCHSC24) - Cairns Convention Centre, Cairns, Australia Duration: 19 Aug 2024 → 24 Aug 2024 Conference number: 16

Conference

Conference	The XVIth Quark Confinement and the Hadron Spectrum Conference (QCHSC24)
Abbreviated title	QCHSC24
Country/Territory	Australia
City	Cairns
Period	19/08/24 → 24/08/24

Keywords

tetraquark
covariant equations

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10.22323/1.483.0137Licence: CC BY-NC-ND

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title = "Tetraquark equations",

abstract = "In recent years, steady progress has been made to formulate ever more accurate practical covariant equations describing the tetraquark where pairwise interactions are dominated by diquark (D), antidiquark (D¯), or meson (M) formation, and where quark-antiquark (qq¯) annihilation is taken into account. In all cases, the basic idea has been to exploit the dominance of D, D¯, and M formation to reduce the inherently four-body equations down to coupled two-body equations. Here we describe the progressive development of such equations, and introduce a new refinement whereby all pole contributions to pairwise interactions between the quarks (corresponding to D, D¯, and M formation) are included non-perturbatively, while only their non-pole parts are used for a perturbative multiple scattering",

keywords = "tetraquark, covariant equations",

author = "B. Blankleider and Kvinikhidze, \{A. N.\}",

year = "2025",

month = oct,

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doi = "10.22323/1.483.0137",

language = "English",

volume = "483",

booktitle = "Proceedings of Science",

publisher = "Sissa Medialab Srl",

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note = "The XVIth Quark Confinement and the Hadron Spectrum Conference (QCHSC24), QCHSC24 ; Conference date: 19-08-2024 Through 24-08-2024",

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TY - GEN

T1 - Tetraquark equations

AU - Blankleider, B.

AU - Kvinikhidze, A. N.

N1 - Conference code: 16

PY - 2025/10/27

Y1 - 2025/10/27

N2 - In recent years, steady progress has been made to formulate ever more accurate practical covariant equations describing the tetraquark where pairwise interactions are dominated by diquark (D), antidiquark (D¯), or meson (M) formation, and where quark-antiquark (qq¯) annihilation is taken into account. In all cases, the basic idea has been to exploit the dominance of D, D¯, and M formation to reduce the inherently four-body equations down to coupled two-body equations. Here we describe the progressive development of such equations, and introduce a new refinement whereby all pole contributions to pairwise interactions between the quarks (corresponding to D, D¯, and M formation) are included non-perturbatively, while only their non-pole parts are used for a perturbative multiple scattering

AB - In recent years, steady progress has been made to formulate ever more accurate practical covariant equations describing the tetraquark where pairwise interactions are dominated by diquark (D), antidiquark (D¯), or meson (M) formation, and where quark-antiquark (qq¯) annihilation is taken into account. In all cases, the basic idea has been to exploit the dominance of D, D¯, and M formation to reduce the inherently four-body equations down to coupled two-body equations. Here we describe the progressive development of such equations, and introduce a new refinement whereby all pole contributions to pairwise interactions between the quarks (corresponding to D, D¯, and M formation) are included non-perturbatively, while only their non-pole parts are used for a perturbative multiple scattering

KW - tetraquark

KW - covariant equations

U2 - 10.22323/1.483.0137

DO - 10.22323/1.483.0137

M3 - Conference contribution

VL - 483

BT - Proceedings of Science

PB - Sissa Medialab Srl

CY - Trieste, Italy

T2 - The XVIth Quark Confinement and the Hadron Spectrum Conference (QCHSC24)

Y2 - 19 August 2024 through 24 August 2024

ER -

Tetraquark equations

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Conference

Keywords

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