Excited ρ mesons in Bcψ()KKS decays

A. V. Luchinsky (A.A. Logunov Institute for High Energy Physics, NRC Kurchatov Institute, 142281 Protvino, Russian Federation)

In this paper, exclusive decays BcJ/ψKKS and Bcψ(2S)KKS are analyzed. It is shown that contributions of the excited ρ mesons should be taken into account to describe these decays. It is also shown that, unlike the corresponding τ lepton decays, peaks in mKKS distributions caused by these resonances are clearly seen and can be easily separated. Theoretical predictions for the branching fractions of the reactions and mψK distributions are also presented.

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      "title": "Excited <math><mi>\u03c1</mi></math> mesons in <math><mrow><msub><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>\u2192</mo><msup><mrow><mi>\u03c8</mi></mrow><mrow><msup><mrow><mo>(</mo></mrow><mrow><mo>\u2032</mo></mrow></msup><mo>)</mo></mrow></msup><mi>K</mi><msub><mrow><mi>K</mi></mrow><mrow><mi>S</mi></mrow></msub></mrow></math> decays"
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  "abstracts": [
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      "value": "In this paper, exclusive decays <math><mrow><msub><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>\u2192</mo><mi>J</mi><mo>/</mo><mi>\u03c8</mi><mi>K</mi><msub><mrow><mi>K</mi></mrow><mrow><mi>S</mi></mrow></msub></mrow></math> and <math><mrow><msub><mrow><mi>B</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>\u2192</mo><mi>\u03c8</mi><mo>(</mo><mn>2</mn><mi>S</mi><mo>)</mo><mi>K</mi><msub><mrow><mi>K</mi></mrow><mrow><mi>S</mi></mrow></msub></mrow></math> are analyzed. It is shown that contributions of the excited <math><mi>\u03c1</mi></math> mesons should be taken into account to describe these decays. It is also shown that, unlike the corresponding <math><mi>\u03c4</mi></math> lepton decays, peaks in <math><mrow><msub><mrow><mi>m</mi></mrow><mrow><mi>K</mi><msub><mrow><mi>K</mi></mrow><mrow><mi>S</mi></mrow></msub></mrow></msub></mrow></math> distributions caused by these resonances are clearly seen and can be easily separated. Theoretical predictions for the branching fractions of the reactions and <math><msub><mi>m</mi><mrow><mi>\u03c8</mi><mi>K</mi></mrow></msub></math> distributions are also presented."
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Published on:
27 February 2019
Publisher:
APS
Published in:
Physical Review D , Volume 99 (2019)
Issue 3
DOI:
https://doi.org/10.1103/PhysRevD.99.036019
arXiv:
1812.09783
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

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