Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>3940</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>ω</mml:mi></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>ω</mml:mi><mml:mi>K</mml:mi></mml:math>at<i>BABAR</i>

2008160 citationsJournal Articlebronze Open Access

Authors

B. Aubert · Centre National de la Recherche Scientifique

M. Bóna · Université Savoie Mont Blanc

D. Boutigny · Université Savoie Mont Blanc

Y. Karyotakis · Université Savoie Mont Blanc

J. P. Lees · Université Savoie Mont Blanc

V. Poireau · Université Savoie Mont Blanc

X. Prudent ·

Abstract

We present a study of the decays B;{0,+}-->J/psiomegaK;{0,+} using 383x10;{6} BB[over ] events obtained with the BABAR detector at PEP-II. We observe Y(3940)-->J/psiomega, with mass 3914.6_{-3.4};{+3.8}(stat)+/-2.0(syst) MeV/c;{2}, and width 34_{-8};{+12}(stat)+/-5(syst) MeV. The ratio of B0 and B+ decay to YK is 0.27_{-0.23};{+0.28}(stat)-0.01+0.04(syst), and the relevant B0 and B+ branching fractions are reported.

Topics & Keywords

Particle physics theoretical and experimental studies Quantum Chromodynamics and Particle Interactions High-Energy Particle Collisions Research

Publication Details

Published in: Physical Review Letters

Volume 101, Issue 8, pp. 082001-082001

DOI: 10.1103/physrevlett.101.082001

Field-Weighted Citation Impact: 32.07

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