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The Λb lifetime in the light front quark model

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Abstract

The enhancement of the Λb decay width relative to B decay due to the difference in Fermi motion effects in Λband B is calculated in the light front quark model with the simplifying assumption that Λbconsists of a heavy quark and a light scalar diquark. In order to explain the large deviation from unity in the experimental result for τ(Λb)/τ(B), it is necessary that the diquark be light and the ratio of the squares of the Λb and B wave functions at the origin be ≲1.

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Authors and Affiliations

  1. Institute of Theoretical and Experimental Physics, Bol’shaya Cheremushkinskaya ul. 25, Moscow, 117259, Russia

    P. Yu. Kulikov, I. M. Narodetskii & A. I. Onischenko

Authors
  1. P. Yu. Kulikov
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  2. I. M. Narodetskii
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  3. A. I. Onischenko
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Additional information

From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 9, 2000, pp. 528–533.

Original English Text Copyright © 2000 by Kulikov, Narodetski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Onischenko.

This article was submitted by the authors in English.

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Kulikov, P.Y., Narodetskii, I.M. & Onischenko, A.I. The Λb lifetime in the light front quark model. Jetp Lett. 71, 362–366 (2000). https://doi.org/10.1134/1.568354

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  • DOI: https://doi.org/10.1134/1.568354

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