Rights statement: © 2008 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Study of direct CP violation in $B^{\pm} \to J/ψK^{\pm}(π^{\pm})$ decays
AU - Collaboration, D0
AU - Abazov, V.
AU - Bertram, Iain
AU - Williams, Mark
AU - Borissov, Guennadi
AU - Ratoff, Peter
AU - Fox, Harald
N1 - © 2008 The American Physical Society
PY - 2008/2/22
Y1 - 2008/2/22
N2 - 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.).
AB - 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.).
UR - http://www.scopus.com/inward/record.url?scp=44649097173&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.100.211802
DO - 10.1103/PhysRevLett.100.211802
M3 - Journal article
VL - 100
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 21
M1 - 211802
ER -