Search for $B \to u$ transitions in $B^{-} \to$ [ $K^{+} \pi^{-} \pi^0$ ] ($D$) $K^{-}$ - INSPIRE

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Search for $B \to u$ transitions in $B^{-} \to$ [ $K^{+} \pi^{-} \pi^0$ ] ( $D$ ) $K^{-}$

BaBar

Collaboration

Aug, 2007

4 pages

Published in:

Phys.Rev.D 76 (2007) 111101

e-Print:

0708.0182 [hep-ex]

DOI:

10.1103/PhysRevD.76.111101

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{0}}

_{{{\mathit D}}}

{{\mathit K}^{+}}

Report number:

BABAR-PUB-07-030,
SLAC-PUB-12694

Experiments:

SLAC-PEP2-BABAR

View in:

reference search18 citations

Citations per year

Abstract: (arXiv)

We search for decays of a B meson into a neutral D meson and a kaon, with the D meson decaying into K+pi-pi0. This final state can be reached through the b --> c transition B- -> D0K- followed by the doubly Cabibbo-suppressed D0 --> K+pi-pi0, or the b --> u transition B- --> D0bar K- followed by the Cabibbo-favored D0bar --> K+ pi-pi 0. The interference of these two amplitudes is sensitive to the angle gamma of the unitarity triangle. We present preliminary results based on 226 10^{6} e+e- --> Y(4s) --> BBbar events collected with the BABAR detector at SLAC. We find no significant evidence for these decays and we set a limit R_ADS =(BR(B- -->[K+pi-pi0]_D K-)+ BR(B+ --> [K-pi+pi0]_D K+))/(BR(B- -->[K-p i+pi0]_D K-)+ BR(B+ --> [K+pi-pi0]_D K+))<0.039 at 95% confidence level, which we translate with a Bayesian approach into r_B = |A(B- --> D0bar K-)|/|A(B- --> D0bar K-)| < 0.185 at 95% confidence level.

Note:

4 pages, 10 postscript figues, submitted to Physical Review Letters

13.25.Hw
14.40.Nd
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B-: hadronic decay
D0: hadronic decay
anti-D0: hadronic decay
scattering amplitude: interference

References(16)

Figures(0)

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