Stability of Heavy Tetraquarks

A. Valcarce; J. Vijande; J. M. Richard; H. Garcilazo

doi:10.1007/s00601-018-1331-9

Stability of Heavy Tetraquarks

A. Valcarce, J. Vijande, J. M. Richard, H. Garcilazo

Escuela Superior de Física y Matemáticas (ESFM)

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

2 Citas (Scopus)

Resumen

We discuss the stability of tetraquark systems with two different masses. After some reminders about the stability of very asymmetric QQq¯ q¯ tetraquarks, we demonstrate that in the all-heavy limit q→ Q, the system becomes unstable for standard color-additive models. We also analyze the consequences of symmetry breaking for QqQ¯ q¯ configurations: we find a kind of metastability between the lowest threshold QQ¯ + qq¯ and the highest one, Qq¯ + Q¯ q, and we calculate the width of the resonance. Our results are consistent with the experimental observation of narrow hadrons lying well above their lowest decay threshold.

Idioma original	Inglés
Número de artículo	9
Publicación	Few-Body Systems
Volumen	59
N.º	2
DOI	https://doi.org/10.1007/s00601-018-1331-9
Estado	Publicada - 1 mar. 2018

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title = "Stability of Heavy Tetraquarks",

abstract = "We discuss the stability of tetraquark systems with two different masses. After some reminders about the stability of very asymmetric QQq¯ q¯ tetraquarks, we demonstrate that in the all-heavy limit q→ Q, the system becomes unstable for standard color-additive models. We also analyze the consequences of symmetry breaking for QqQ¯ q¯ configurations: we find a kind of metastability between the lowest threshold QQ¯ + qq¯ and the highest one, Qq¯ + Q¯ q, and we calculate the width of the resonance. Our results are consistent with the experimental observation of narrow hadrons lying well above their lowest decay threshold.",

author = "A. Valcarce and J. Vijande and Richard, {J. M.} and H. Garcilazo",

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T1 - Stability of Heavy Tetraquarks

AU - Valcarce, A.

AU - Vijande, J.

AU - Richard, J. M.

AU - Garcilazo, H.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - We discuss the stability of tetraquark systems with two different masses. After some reminders about the stability of very asymmetric QQq¯ q¯ tetraquarks, we demonstrate that in the all-heavy limit q→ Q, the system becomes unstable for standard color-additive models. We also analyze the consequences of symmetry breaking for QqQ¯ q¯ configurations: we find a kind of metastability between the lowest threshold QQ¯ + qq¯ and the highest one, Qq¯ + Q¯ q, and we calculate the width of the resonance. Our results are consistent with the experimental observation of narrow hadrons lying well above their lowest decay threshold.

AB - We discuss the stability of tetraquark systems with two different masses. After some reminders about the stability of very asymmetric QQq¯ q¯ tetraquarks, we demonstrate that in the all-heavy limit q→ Q, the system becomes unstable for standard color-additive models. We also analyze the consequences of symmetry breaking for QqQ¯ q¯ configurations: we find a kind of metastability between the lowest threshold QQ¯ + qq¯ and the highest one, Qq¯ + Q¯ q, and we calculate the width of the resonance. Our results are consistent with the experimental observation of narrow hadrons lying well above their lowest decay threshold.

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U2 - 10.1007/s00601-018-1331-9

DO - 10.1007/s00601-018-1331-9

M3 - Artículo

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VL - 59

JO - Few-Body Systems

JF - Few-Body Systems

IS - 2

M1 - 9

ER -

Stability of Heavy Tetraquarks

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