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

T. M. Aliev, Choong Sun Kim, M. Savci

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We examine the possibility for precise determination of |Vts| (and |Vtd/Vts\) from the exclusive decays, B → Kℓ+-, B → K * ℓ+- (and B → π ℓ+-, B → ρℓ+-). 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+-)/dq2, and the ratios of integrated branching fractions, ℬ(B → ρℓ+-)/ℬ(B → K * ℓ+-). We estimate that one can determine the ratio |Vts\ from those decays within theoretical accuracy of ∼ 10%.

Original languageEnglish
Pages (from-to)410-418
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume441
Issue number1-4
DOIs
Publication statusPublished - 1998 Nov 26

Fingerprint

decay
form factors
estimates

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

@article{4f6c1deb1d9f47c7a0f63ebb4bd50eae,
title = "Exclusive B → Mℓ+ℓ-(M = π, K, ρ, K *) decays and determinations of |Vts| (and |Vtd/Vts|)",
abstract = "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{\%}.",
author = "Aliev, {T. M.} and Kim, {Choong Sun} and M. Savci",
year = "1998",
month = "11",
day = "26",
doi = "10.1016/S0370-2693(98)01168-X",
language = "English",
volume = "441",
pages = "410--418",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "1-4",

}

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

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

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

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

M3 - Article

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 -