Observation of High Momentum $η^{'}$ Production in $B$ Decays

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31 August 1998

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

Vol. 81 (9) , 1786-1790
https://doi.org/10.1103/physrevlett.81.1786

Abstract

We report the first observation of

B \to η^{'} X

transitions with high momentum

η^{'}

mesons. We observe

39.0 \pm 11.6 B

decay events with

2.0 < p_{η^{'}} < 2.7 GeV / c

, the high momentum region where background from

b \to c

processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to

b \to {sg}^{*}

transitions. Given that interpretation, we find

B (B \to η^{'} X_{s}) = [6.2 \pm 1.6 (stat) \pm 1.3 (syst)_{- 1.5}^{+ 0.0} (bkg)] \times 10^{- 4}

for

2.0 < p_{η^{'}} < 2.7 GeV / c

.

Keywords

All Related Versions

Version 1, 1998-04-30, ArXiv

This publication has 18 references indexed in Scilit:

Search for color-suppressed $B$ hadronic decay processes at the $Υ (4 S)$ resonance
Physical Review D, 1998
Two-Body $B$ Meson Decays to $η$ and $η^{'}$ : Observation of $B \to η^{'} K$
Physical Review Letters, 1998
Observation of Exclusive Two-Body $B$ Decays to Kaons and Pions
Physical Review Letters, 1998
New Measurement of $B \to D^{*} π$ Branching Fractions
Physical Review Letters, 1998
Charmless B decays to η′ and η
Physics Letters B, 1997
B → η′ + X and the QCD anomaly
Physics Letters B, 1997
First Measurement of the Rate for the Inclusive Radiative Penguin Decay $b \to s γ$
Physical Review Letters, 1995
Two body non-leptonic decays of B and Bs mesons
Physics Letters B, 1993
CP Violation in B Physics
Annual Review of Nuclear and Particle Science, 1992
The CLEO II detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992