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Search for flavor-changing-neutral-current D meson decays
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2008 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 100, no 10, 101801-1-101801-7 p.Article in journal (Refereed) Published
Abstract [en]

We study the flavor-changing-neutral-current process c -> u mu(+)mu(-) using 1.3 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the charged-current mediated D-s(+) and D+->phi pi(+)->mu(+)mu(-)pi(+) final states with significance greater than 4 standard deviations above background for the D+ state. We search for the continuum neutral-current decay of D+->pi(+)mu(+)mu(-) in the dimuon invariant mass spectrum away from the phi resonance. We see no evidence of signal above background and set a limit of B(D+->pi(+)mu(+)mu(-))< 3.9 x 10(-6) at the 90% C.L. This limit places the most stringent constraint on new phenomena in the c -> u mu(+)mu(-) transition.

Place, publisher, year, edition, pages
2008. Vol. 100, no 10, 101801-1-101801-7 p.
Keyword [en]
Colliding beam accelerators, Electron energy levels, Mass spectrometry, Particle detectors, Resonance, Fermilab Tevatron Collider, Mass spectrum
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-33165DOI: 10.1103/PhysRevLett.100.101801ISI: 000254024500010OAI: oai:DiVA.org:kth-33165DiVA: diva2:413746
Note
QC 20110429Available from: 2011-04-29 Created: 2011-04-29 Last updated: 2017-12-11Bibliographically approved

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Strandberg, Jonas

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