Two-Body $B$ Meson Decays to $η$ and $η^{'}$ : Observation of $B \to η^{'} K$

Publisher Website

27 April 1998

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 80 (17) , 3710-3714
https://doi.org/10.1103/physrevlett.80.3710

Abstract

In a sample of

6.6 \times 10^{6}

produced

B

mesons we have observed decays

B \to η^{'} K

, with branching fractions

B (B^{+} \to η^{'} K^{+}) = ({6.5}_{- 1.4}^{+ 1.5} \pm 0.9) \times 10^{- 5}

and

B (B^{0} \to η^{'} K^{0}) = ({4.7}_{- 2.0}^{+ 2.7} \pm 0.9) \times 10^{- 5}

. We have searched with comparable sensitivity for 17 related decays to final states containing an

η

or

η^{'}

meson accompanied by a single particle or low-lying resonance. Our upper limits for these constrain theoretical interpretations of the

B \to η^{'} K

signal.

Keywords

All Related Versions

This publication has 21 references indexed in Scilit:

$B$ Decays Involving $η$ and $η^{'}$ in Light of the $B \to {K η}^{'}$ Process
Physical Review Letters, 1997
First Measurement of the $B \to π ℓ ν$ and $B \to ρ (ω) ℓ ν$ Branching Fractions
Physical Review Letters, 1996
Determination of CKM phases through rigid polygons of flavor SU(3) amplitudes
Physical Review D, 1996
Determining the weak phase γ from chargedBdecays
Physical Review D, 1996
Determining the Cabibbo-Kobayashi-Maskawa Unitarity Triangle from $B$ Decays to Charged Pions and Kaons
Physical Review Letters, 1996
Search for exclusive charmless hadronicBdecays
Physical Review D, 1996
CP violation and strong phases from penguins in B±→PP and B±→VP decays
The European Physical Journal C, 1995
Observation of $B^{0}$ decay to two charmless mesons
Physical Review Letters, 1993
Evidence for penguin-diagram decays: First observation ofB→ $K^{*}$ (892)γ
Physical Review Letters, 1993
CP-Violation in the Renormalizable Theory of Weak Interaction
Progress of Theoretical Physics, 1973