Fully-heavy tetraquark spectra and production at hadron colliders

Motivated by the observation of exotic structure around 6900 MeV in the J/ψ-pair mass spectrum using proton-proton collision data by the LHCb collaboration, we study the spectra of fully-heavy tetraquarks within Bethe-Salpeter equation and Regge trajectory relation. The X(6900) may be explained as a...

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Main Author:	Ruilin Zhu
Format:	Article
Language:	English
Published:	Elsevier 2021-05-01
Series:	Nuclear Physics B
Online Access:	http://www.sciencedirect.com/science/article/pii/S0550321321000900

id	doaj-bf2db98a6b3d464bb98f70009d963b0a
record_format	Article
spelling	doaj-bf2db98a6b3d464bb98f70009d963b0a2021-04-28T06:08:25ZengElsevierNuclear Physics B0550-32132021-05-01966115393Fully-heavy tetraquark spectra and production at hadron collidersRuilin Zhu0Correspondence to: Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, Jiangsu 210023, China.; Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, Jiangsu 210023, China; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USAMotivated by the observation of exotic structure around 6900 MeV in the J/ψ-pair mass spectrum using proton-proton collision data by the LHCb collaboration, we study the spectra of fully-heavy tetraquarks within Bethe-Salpeter equation and Regge trajectory relation. The X(6900) may be explained as a radially excited state with quark content ccc¯c¯ and spin-parity 0++(3S) or 2++(3S) or an orbitally excited 2P state. New ccc¯c¯ structures around 6.0 GeV, 6.5 GeV, and 7.1 GeV are predicted together. Other bbb¯b¯ and bcb¯c¯ structures which may be experimentally prominent are discussed. On the other hand, the fully-heavy S-wave tetraquark production at hadron colliders is investigated and their cross sections are obtained.http://www.sciencedirect.com/science/article/pii/S0550321321000900
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Ruilin Zhu
spellingShingle	Ruilin Zhu Fully-heavy tetraquark spectra and production at hadron colliders Nuclear Physics B
author_facet	Ruilin Zhu
author_sort	Ruilin Zhu
title	Fully-heavy tetraquark spectra and production at hadron colliders
title_short	Fully-heavy tetraquark spectra and production at hadron colliders
title_full	Fully-heavy tetraquark spectra and production at hadron colliders
title_fullStr	Fully-heavy tetraquark spectra and production at hadron colliders
title_full_unstemmed	Fully-heavy tetraquark spectra and production at hadron colliders
title_sort	fully-heavy tetraquark spectra and production at hadron colliders
publisher	Elsevier
series	Nuclear Physics B
issn	0550-3213
publishDate	2021-05-01
description	Motivated by the observation of exotic structure around 6900 MeV in the J/ψ-pair mass spectrum using proton-proton collision data by the LHCb collaboration, we study the spectra of fully-heavy tetraquarks within Bethe-Salpeter equation and Regge trajectory relation. The X(6900) may be explained as a radially excited state with quark content ccc¯c¯ and spin-parity 0++(3S) or 2++(3S) or an orbitally excited 2P state. New ccc¯c¯ structures around 6.0 GeV, 6.5 GeV, and 7.1 GeV are predicted together. Other bbb¯b¯ and bcb¯c¯ structures which may be experimentally prominent are discussed. On the other hand, the fully-heavy S-wave tetraquark production at hadron colliders is investigated and their cross sections are obtained.
url	http://www.sciencedirect.com/science/article/pii/S0550321321000900
work_keys_str_mv	AT ruilinzhu fullyheavytetraquarkspectraandproductionathadroncolliders
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Fully-heavy tetraquark spectra and production at hadron colliders

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