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Search for the X(4140) state in B+ -> J/psi phi K+ decays with the D0 detector
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2014 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 89, no 1, 012004- p.Article in journal (Refereed) Published
Abstract [en]

We investigate the decay B+ -> J/psi phi K+ in a search for the X(4140) state, a narrow threshold resonance in the J/psi phi system. The data sample corresponds to an integrated luminosity of 10.4 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider. We observe a mass peak with a statistical significance of 3.1 standard deviations and measure its invariant mass to be M = 4159.0 +/- 4.3(stat) +/- 6.6(syst) MeV and its width to be Gamma = 19.9 +/- 12.6(stat)(-8.0)(+3.0)(syst) MeV.

Place, publisher, year, edition, pages
2014. Vol. 89, no 1, 012004- p.
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Natural Sciences
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URN: urn:nbn:se:uu:diva-221931DOI: 10.1103/PhysRevD.89.012004ISI: 000331867700001OAI: oai:DiVA.org:uu-221931DiVA: diva2:710489
Available from: 2014-04-07 Created: 2014-04-07 Last updated: 2017-12-05Bibliographically approved

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Buszello, Claus P.

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