### Abstract

We examine the possibility for precise determination of |V_{ts}| (and |V_{td}/V_{ts}\) from the exclusive decays, B → Kℓ^{+}ℓ^{-}, B → K * ℓ^{+}ℓ^{-} (and B → π ℓ^{+}ℓ^{-}, B → ρℓ^{+}ℓ^{-}). We show that the ratio |V_{ts}| can be extracted experimentally with a small theoretical uncertainty from hadronic form-factors, if we appropriately constrain kinematical regions of q^{2}. We also give detailed analytical and numerical results on the differential decay width dΓ(B → K * ℓ^{+}ℓ^{-})/dq^{2}, and the ratios of integrated branching fractions, ℬ(B → ρℓ^{+}ℓ^{-})/ℬ(B → K * ℓ^{+}ℓ^{-}). We estimate that one can determine the ratio |V_{ts}\ from those decays within theoretical accuracy of ∼ 10%.

Original language | English |
---|---|

Pages (from-to) | 410-418 |

Number of pages | 9 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 441 |

Issue number | 1-4 |

DOIs | |

Publication status | Published - 1998 Nov 26 |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

}

^{+}ℓ

^{-}(M = π, K, ρ, K *) decays and determinations of |V

_{ts}| (and |V

_{td}/V

_{ts}|)',

*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*, vol. 441, no. 1-4, pp. 410-418. https://doi.org/10.1016/S0370-2693(98)01168-X

**Exclusive B → Mℓ ^{+}ℓ^{-}(M = π, K, ρ, K *) decays and determinations of |V_{ts}| (and |V_{td}/V_{ts}|).** / Aliev, T. M.; Kim, Choong Sun; Savci, M.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Exclusive B → Mℓ+ℓ-(M = π, K, ρ, K *) decays and determinations of |Vts| (and |Vtd/Vts|)

AU - Aliev, T. M.

AU - Kim, Choong Sun

AU - Savci, M.

PY - 1998/11/26

Y1 - 1998/11/26

N2 - We examine the possibility for precise determination of |Vts| (and |Vtd/Vts\) from the exclusive decays, B → Kℓ+ℓ-, B → K * ℓ+ℓ- (and B → π ℓ+ℓ-, B → ρℓ+ℓ-). We show that the ratio |Vts| can be extracted experimentally with a small theoretical uncertainty from hadronic form-factors, if we appropriately constrain kinematical regions of q2. We also give detailed analytical and numerical results on the differential decay width dΓ(B → K * ℓ+ℓ-)/dq2, and the ratios of integrated branching fractions, ℬ(B → ρℓ+ℓ-)/ℬ(B → K * ℓ+ℓ-). We estimate that one can determine the ratio |Vts\ from those decays within theoretical accuracy of ∼ 10%.

AB - We examine the possibility for precise determination of |Vts| (and |Vtd/Vts\) from the exclusive decays, B → Kℓ+ℓ-, B → K * ℓ+ℓ- (and B → π ℓ+ℓ-, B → ρℓ+ℓ-). We show that the ratio |Vts| can be extracted experimentally with a small theoretical uncertainty from hadronic form-factors, if we appropriately constrain kinematical regions of q2. We also give detailed analytical and numerical results on the differential decay width dΓ(B → K * ℓ+ℓ-)/dq2, and the ratios of integrated branching fractions, ℬ(B → ρℓ+ℓ-)/ℬ(B → K * ℓ+ℓ-). We estimate that one can determine the ratio |Vts\ from those decays within theoretical accuracy of ∼ 10%.

UR - http://www.scopus.com/inward/record.url?scp=0347570048&partnerID=8YFLogxK

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U2 - 10.1016/S0370-2693(98)01168-X

DO - 10.1016/S0370-2693(98)01168-X

M3 - Article

AN - SCOPUS:0347570048

VL - 441

SP - 410

EP - 418

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-4

ER -