Radial excitation of light mesons and the γγ* → π0 transition form factor

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dc.citation.issue5
dc.citation.volume104
dc.contributor.authorCao F-G
dc.date.accessioned2023-12-11T01:22:04Z
dc.date.accessioned2024-07-25T06:33:48Z
dc.date.available2021-09-07
dc.date.available2023-12-11T01:22:04Z
dc.date.available2024-07-25T06:33:48Z
dc.date.issued2021-09-22
dc.description.abstractWe investigate radial excitation of the quark-antiquark pair in the π0 meson and its effects on the γγ* → π0 transition form factor in the framework of light cone perturbative QCD. The existing constraints on the light cone wave function of the lowest Fock state Iqq¯〉 in the π0 meson allow a sizeable radial excitation of the quark-antiquark pair. We construct the light cone wave function for the quark-antiquark pair in the first radially excited state (the 2S state) using a simple harmonic oscillator potential. The distribution amplitude obtained for the 2S state has two nodes in x at low scale of Q and thereby has a much strong scale dependence than the 1S state. Contributions from this radial excitation to the γγ* → π0 transition form factor exhibit different Q2-dependence behavior from the ground state and thus can modify the prediction for the transition form factor in the medium-large region of Q2.
dc.description.confidentialfalse
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000704621000002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationCao FG. (2021). Radial excitation of light mesons and the transition form factor. Physical Review D. 104. 5.
dc.identifier.doi10.1103/PhysRevD.104.054025
dc.identifier.eissn2470-0029
dc.identifier.elements-typejournal-article
dc.identifier.issn2470-0010
dc.identifier.numberARTN 054025
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70427
dc.languageEnglish
dc.publisherAmerican Physical Society
dc.publisher.urihttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.054025
dc.relation.isPartOfPhysical Review D
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleRadial excitation of light mesons and the γγ* → π0 transition form factor
dc.typeJournal article
pubs.elements-id449050
pubs.organisational-groupOther
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