Observation of $B^0$ ($s$) $\to K^{+} K^{-}$ and Measurements of Branching Fractions of Charmless Two-body Decays of $B^0$ and $B^0_{s}$ Mesons in $\bar{p} p$ Collisions at $\sqrt{s}$ = 1.96-TeV - INSPIRE

DataBETA

Observation of $B^0$ ( $s$ ) $\to K^{+} K^{-}$ and Measurements of Branching Fractions of Charmless Two-body Decays of $B^0$ and $B^0_{s}$ Mesons in $\bar{p} p$ Collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

Jul, 2006

7 pages

Published in:

Phys.Rev.Lett. 97 (2006) 211802

e-Print:

hep-ex/0607021 [hep-ex]

DOI:

10.1103/PhysRevLett.97.211802

PDG:

{{\mathit B}^{0}}

\rightarrow

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

Report number:

FERMILAB-PUB-06-240-E

Experiments:

FNAL-E-0830

View in:

reference search114 citations

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Abstract:

We search for decays of the type B0(Bs)->h+h'- (where h,h'= K or pi) in 180 pb-1 of p-pbar collisions collected at the Tevatron by the upgraded Collider Detector at Fermilab. We report the first observation of the new mode Bs->K+K- with a yield of 236 +- 32 events, corresponding to (f_s/f_d)*BR(Bs->K+K-)/BR(B0->K+pi-) = 0.46+-0.08(stat.)+-0.07(syst.), where f_s/f_d is the ratio of production fractions of Bs and B0. We find results in agreement with world averages for the B0 modes, and set the following new limits at 90% CL: BR(Bs->K-pi+) < 5.6*10^{-6} and BR(Bs->pi+pi-) < 1.7*10^{-6}.

Note:

7 Pages, 2 Figures. v3: added minor corrections made in proof before publication Report-no: FERMILAB-PUB-06-240-E Journal-ref: Phys.Rev.Lett. 97 (2006) 211802

14.40.Nd
13.25.Hw
anti-p p: colliding beams
bottom: pair production
B0: hadronic decay
B/s0: hadronic decay
final state: (0charm)
pseudoscalar meson: pair production
pi
K

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Figures(0)

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