About: Study of direct CP violation in B+- ---> J/psi K+- (pi+-) file decays     Goto   Sponge   NotDistinct   Permalink

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  • We present a search for direct CP violation in $B^{/pm} /to J//psi K^{/pm}(/pi^{/pm})$ decays. The event sample is selected from 2.8 fb$^{-1}$ of $p/bar{p}$ collisions recorded by D0 experiment in Run II of the Fermilab Tevatron Collider. The charge asymmetry $A_{CP}(B^+ /to J//psi K^+) = +0.0075 /pm 0.0061$(stat.)$/pm 0.0027$(syst.) is obtained using a sample of approximately 40 thousand $B^{/pm} /to J//psi K^{/pm}$ decays. The achieved precision is of the same level as the expected deviation predicted by some extensions of the standard model. We also measured the charge asymmetry $A_{CP}(B^+ /to J//psi /pi^+) = -0.09 /pm 0.08$(stat.)$/pm 0.03$(syst.).
  • We present a search for direct CP violation in $B^{/pm} /to J//psi K^{/pm}(/pi^{/pm})$ decays. The event sample is selected from 2.8 fb$^{-1}$ of $p/bar{p}$ collisions recorded by D0 experiment in Run II of the Fermilab Tevatron Collider. The charge asymmetry $A_{CP}(B^+ /to J//psi K^+) = +0.0075 /pm 0.0061$(stat.)$/pm 0.0027$(syst.) is obtained using a sample of approximately 40 thousand $B^{/pm} /to J//psi K^{/pm}$ decays. The achieved precision is of the same level as the expected deviation predicted by some extensions of the standard model. We also measured the charge asymmetry $A_{CP}(B^+ /to J//psi /pi^+) = -0.09 /pm 0.08$(stat.)$/pm 0.03$(syst.). (en)
  • Představujeme výsledky hledání přímého CP narušení v B+- --> J/psi K+- (pi+-) rozpadech. Testovaný vzorek případů byl vybrán z 2.8 fb**-1 proton anti-protonových srážek nabraných D0 experimentem během Run II fermilabského urychlovače Tevatron. Ze vzorku přibližně 40 tisíc B+- --> J/psi K+- rozpadů byla určena nábojová asymetrie Acp(B+- --> J/psi K+) jako +0.0075 +- 0.0061 (stat.) +- 0.0027 (syst.). Dosažená přesnost je srovnatelná s očekávanými odchylkami předpovězenými některými rozšířeními standardního modelu. Také jsme změřili nábojovou asymetrii Acp(B+- --> J/psi pi+-) jako -0.09 +- 0.08 (stat.) +- 0.03 (syst.). (cs)
Title
  • Study of direct CP violation in B+- ---> J/psi K+- (pi+-) file decays
  • Study of direct CP violation in B+- ---> J/psi K+- (pi+-) file decays (en)
  • Studium přímého naručení CP v B+- ---> J/psi K+- (pi+-) rozpadech (cs)
skos:prefLabel
  • Study of direct CP violation in B+- ---> J/psi K+- (pi+-) file decays
  • Study of direct CP violation in B+- ---> J/psi K+- (pi+-) file decays (en)
  • Studium přímého naručení CP v B+- ---> J/psi K+- (pi+-) rozpadech (cs)
skos:notation
  • RIV/68378271:_____/08:00315825!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
  • 21
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
  • 398108
http://linked.open...ai/riv/idVysledku
  • RIV/68378271:_____/08:00315825
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • D0; Tevatron (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [D146ED8131D0]
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
  • 000256585500014
http://linked.open...n/vavai/riv/zamer
issn
  • 0031-9007
number of pages
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