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  • Předkládáme studium FCNC procesu c --> umu+mu- v 1.3 fb-1 dat z proton anti-protonových srážek při sqrt(s)=1.96 TeV nabraných D0 detektorem na fermilabském urychlovači Tevatron. Pozorovali jsme jasné stopy Ds+ a D+ --> phi pi+ --> mu+mu- pi+ koncových stavů se statistickou významností větší než čtyři standardní odchylky nad pozadím pro D+ stav. Hledali jsme známky spojitého rozpadu D+ --> pi+ mu+ mu- ve spektru invariantní hmoty dvou mionů mimo oblast phi resonance. Nezjistili jsme žádnou známku signálu na pozadí and stanovili limit větvícího poměru B(D+ --> pi+ mu+ mu-) < 3.9 x 10-6 na hladině spolehlivosti 90%. Tento limit představuje nejostřejší omezení nových jevů v c --> u mu+ mu- přechodu (cs)
  • We study the flavor-changing-neutral-current process c to u mu+ mu- using 1.3 fb-1 of p p bar collisions at sqrt(s) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the Ds+ and D+ to phi pi+ to mu+ mu- pi+ final states with significance greater than four standard deviations above background for the D+ state. We search for the continuum decay of D+ to 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+ to 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 to u mu+ mu- transition.
  • We study the flavor-changing-neutral-current process c to u mu+ mu- using 1.3 fb-1 of p p bar collisions at sqrt(s) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the Ds+ and D+ to phi pi+ to mu+ mu- pi+ final states with significance greater than four standard deviations above background for the D+ state. We search for the continuum decay of D+ to 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+ to 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 to u mu+ mu- transition. (en)
Title
  • Search for flavor-changing-neutral-current D meson decays
  • Hledání FCNC rozpadů D mesonu (cs)
  • Search for flavor-changing-neutral-current D meson decays (en)
skos:prefLabel
  • Search for flavor-changing-neutral-current D meson decays
  • Hledání FCNC rozpadů D mesonu (cs)
  • Search for flavor-changing-neutral-current D meson decays (en)
skos:notation
  • RIV/68378271:_____/08:00316355!RIV09-AV0-68378271
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1P05LA257), P(LA08047), P(LC527), Z(AV0Z10100502), Z(MSM0021620859), Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika
  • 10
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 393946
http://linked.open...ai/riv/idVysledku
  • RIV/68378271:_____/08:00316355
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • D0; Tevatron; mu-; mu+ (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [DA3D15BAAA24]
http://linked.open...i/riv/nazevZdroje
  • Physical Review Letters
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 100
http://linked.open...iv/tvurceVysledku
  • Abazov, V. M.
  • Abbott, B.
  • Kupčo, Alexander
  • Lokajíček, Miloš
  • Abolins, M.
http://linked.open...ain/vavai/riv/wos
  • 000254024500010
http://linked.open...n/vavai/riv/zamer
issn
  • 0031-9007
number of pages
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