Search for b→u transitions in B±→[K∓π±π0]DK± decays
Name
Lees-2011-Search for b -_ u tr.pdf
Size
299.96 KB
Format
Adobe PDF
Checksum (MD5)
375b210001d61997f97f15d06ffa672d
Author(s)
Dujmic, Denis
Sciolla, Gabriella
Cowan, Ray F
Date Issued
July 2011
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Search for b→u transitions in B^{±}→[K^{∓}π^{±}π^{0}]_{D}K^{±} decays.” Physical Review D 84 (2011): n. pag. Web. 8 Nov. 2011. © 2011 American Physical Society
Version
Final published version
Abstract
We present a study of the decays B[superscript ±]→DK[superscript ±] with D mesons reconstructed in the K[superscript +]π[superscript -]π[superscript 0] or K[superscript -]π[superscript +]π[superscript 0] final states, where D indicates a D[superscript 0] or a D̅[superscript 0] meson. Using a sample of 474×10[superscript 6] BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider at SLAC, we measure the ratios R[superscript ±]≡Γ(B[superscript ±]→[K[superscript ∓]π[superscript ±π]0][subscript D]K[superscript ±])/Γ(B[superscript ±]→[K[superscript ±]π[superscript ∓]π[superscript 0]][subscript D]K[superscript ±]). We obtain R[superscript +]=(5[subscript -10][superscript +12](stat)-4[superscript +2](syst))×10[superscript -3] and R-=(12[subscript -10][[superscript +12](stat)[subscript -5][[superscript +3](syst))×10[superscript -3], from which we extract the upper limits at 90% probability: R[superscript +]<23×10[superscript -3] and R[superscript -]<29×10[superscript -3]. Using these measurements, we obtain an upper limit for the ratio r[subscript B] of the magnitudes of the b→u and b→c amplitudes r[subscript B]<0.13 at 90% probability.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevD.84.012002
