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Evidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions

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dc.contributor.authorTeramoto, Y.
dc.contributor.authorUehara, S.
dc.contributor.authorMasuda, M.
dc.contributor.authorAdachi, I.
dc.contributor.authorPakhlov, P.
dc.date.accessioned2024-11-29T12:52:14Z
dc.date.available2024-11-29T12:52:14Z
dc.date.issued2021
dc.description.abstract© 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the highly virtual photon region. The search is performed in e+e-→e+e-J/ψ π+ π-, using 825 fb-1 of data collected by the Belle detector operated at the KEKB e+e-collider. We observe three X(3872) candidates, where the expected background is 0.11±0.10 events, with a significance of 3.2σ. We obtain an estimated value for γB(X(3872)→J/ψ π+ π-) assuming the Q2 dependence predicted by a cc meson model, where-Q2 is the invariant mass squared of the virtual photon. No X(3915)→J/ψ π+ π-candidates are found.
dc.identifier.citationEvidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions / Teramoto, Y. [et al.] // Physical Review Letters. - 2021. - 126. - № 12. - 10.1103/PhysRevLett.126.122001
dc.identifier.doi10.1103/PhysRevLett.126.122001
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevLett.126.122001
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85103505018&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000652825900003
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23850
dc.relation.ispartofPhysical Review Letters
dc.titleEvidence for X (3872) →j/ψ π+ π-Produced in Single-Tag Two-Photon Interactions
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.volume126
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