Nature of X(6900) and its production mechanism at LHCb

We show that the Pomeron exchanges play a unique role in vector charmonium scatterings. Such a mechanism can provide a natural explanation for the nontrivial structures in the di-J/ψ spectrum observed by the LHCb Collaboration. The narrow structure X(6900), as a dynamically generated resonance pole,...

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Autores principales:	Chang Gong, Meng-Chuan Du, Qiang Zhao, Xian-Hui Zhong, Bin Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/7cc369f71e404a28af2b5a71ecbbc44a
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spelling	oai:doaj.org-article:7cc369f71e404a28af2b5a71ecbbc44a2021-12-04T04:32:47ZNature of X(6900) and its production mechanism at LHCb0370-269310.1016/j.physletb.2021.136794https://doaj.org/article/7cc369f71e404a28af2b5a71ecbbc44a2022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0370269321007346https://doaj.org/toc/0370-2693We show that the Pomeron exchanges play a unique role in vector charmonium scatterings. Such a mechanism can provide a natural explanation for the nontrivial structures in the di-J/ψ spectrum observed by the LHCb Collaboration. The narrow structure X(6900), as a dynamically generated resonance pole, can arise from the Pomeron exchanges and coupled-channel effects between the J/ψ-J/ψ, J/ψ-ψ(2S) scatterings. A pole structure near the di-J/ψ threshold is also found. Meanwhile, we predict that X(6900) can produce significant threshold enhancement in the J/ψ-ψ(2S) energy spectrum which can be searched for at LHCb.Chang GongMeng-Chuan DuQiang ZhaoXian-Hui ZhongBin ZhouElsevierarticlePhysicsQC1-999ENPhysics Letters B, Vol 824, Iss , Pp 136794- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Chang Gong Meng-Chuan Du Qiang Zhao Xian-Hui Zhong Bin Zhou Nature of X(6900) and its production mechanism at LHCb
description	We show that the Pomeron exchanges play a unique role in vector charmonium scatterings. Such a mechanism can provide a natural explanation for the nontrivial structures in the di-J/ψ spectrum observed by the LHCb Collaboration. The narrow structure X(6900), as a dynamically generated resonance pole, can arise from the Pomeron exchanges and coupled-channel effects between the J/ψ-J/ψ, J/ψ-ψ(2S) scatterings. A pole structure near the di-J/ψ threshold is also found. Meanwhile, we predict that X(6900) can produce significant threshold enhancement in the J/ψ-ψ(2S) energy spectrum which can be searched for at LHCb.
format	article
author	Chang Gong Meng-Chuan Du Qiang Zhao Xian-Hui Zhong Bin Zhou
author_facet	Chang Gong Meng-Chuan Du Qiang Zhao Xian-Hui Zhong Bin Zhou
author_sort	Chang Gong
title	Nature of X(6900) and its production mechanism at LHCb
title_short	Nature of X(6900) and its production mechanism at LHCb
title_full	Nature of X(6900) and its production mechanism at LHCb
title_fullStr	Nature of X(6900) and its production mechanism at LHCb
title_full_unstemmed	Nature of X(6900) and its production mechanism at LHCb
title_sort	nature of x(6900) and its production mechanism at lhcb
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/7cc369f71e404a28af2b5a71ecbbc44a
work_keys_str_mv	AT changgong natureofx6900anditsproductionmechanismatlhcb AT mengchuandu natureofx6900anditsproductionmechanismatlhcb AT qiangzhao natureofx6900anditsproductionmechanismatlhcb AT xianhuizhong natureofx6900anditsproductionmechanismatlhcb AT binzhou natureofx6900anditsproductionmechanismatlhcb
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Nature of X(6900) and its production mechanism at LHCb

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