$B \to X_{q} l^{+} l^{-} (q = d, s)$ and determination of $| V_{td} {/ V}_{ts} |$

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1 December 1997

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

Vol. 56 (11) , 7240-7246
https://doi.org/10.1103/physrevd.56.7240

Abstract

We propose a new method to extract

| V_{td} {/ V}_{ts} |

from the ratio of the decay distributions

d R / d s \equiv (d B / d s) [B \to X_{d} l^{+} l^{-}] / (d B / d s) [B \to X_{s} l^{+} l^{-}] .

This ratio depends only on the KM ratio

| V_{td} {/ V}_{ts} |

with

15 %

theoretical uncertainties, if dilepton invariant mass-squared

s

is away from the peaks of the possible resonance states,

J / ψ

,

ψ^{'}

, etc. We also give a detailed analytical and numerical analysis on

(d B / d s) [B \to X_{q} l^{+} l^{-}] (q = d, s)

and

d R / d s

.

Keywords

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This publication has 19 references indexed in Scilit:

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