Strong phase shifts and color-suppressed tree amplitudes in B → DK* and B → Dπ, Dρ decays

C. S. Kim, Sechul Oh, Chaehyun Yu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We analyze the decay processes B → DK, DK*, Dπ, and Dρ in a model-independent way. Using the quark diagram approach, we determine the magnitudes of the relevant amplitudes and the relative strong phase shifts. In order to find the most likely values of the magnitudes and the relative strong phases of the amplitudes in a statistically reliable way, we use the χ2 minimization technique. We find that the strong phase difference between the color-allowed and the color-suppressed tree amplitude can be large and is non-zero at 1σ level with the present data. The color-suppressed tree contributions are found to be sizably enhanced. We also examine the validity of factorization and estimate the breaking effects of flavor SU(3) symmetry in B → DK, Dπ and in B → DK*, Dρ.

Original languageEnglish
Pages (from-to)259-268
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume621
Issue number3-4
DOIs
Publication statusPublished - 2005 Aug 18

Fingerprint

phase shift
color
decay
factorization
diagrams
quarks
optimization
symmetry
estimates

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

@article{09aee1bf87cb4532baa43939a19484a9,
title = "Strong phase shifts and color-suppressed tree amplitudes in B → DK* and B → Dπ, Dρ decays",
abstract = "We analyze the decay processes B → DK, DK*, Dπ, and Dρ in a model-independent way. Using the quark diagram approach, we determine the magnitudes of the relevant amplitudes and the relative strong phase shifts. In order to find the most likely values of the magnitudes and the relative strong phases of the amplitudes in a statistically reliable way, we use the χ2 minimization technique. We find that the strong phase difference between the color-allowed and the color-suppressed tree amplitude can be large and is non-zero at 1σ level with the present data. The color-suppressed tree contributions are found to be sizably enhanced. We also examine the validity of factorization and estimate the breaking effects of flavor SU(3) symmetry in B → DK, Dπ and in B → DK*, Dρ.",
author = "Kim, {C. S.} and Sechul Oh and Chaehyun Yu",
year = "2005",
month = "8",
day = "18",
doi = "10.1016/j.physletb.2005.06.068",
language = "English",
volume = "621",
pages = "259--268",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "3-4",

}

Strong phase shifts and color-suppressed tree amplitudes in B → DK* and B → Dπ, Dρ decays. / Kim, C. S.; Oh, Sechul; Yu, Chaehyun.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 621, No. 3-4, 18.08.2005, p. 259-268.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Strong phase shifts and color-suppressed tree amplitudes in B → DK* and B → Dπ, Dρ decays

AU - Kim, C. S.

AU - Oh, Sechul

AU - Yu, Chaehyun

PY - 2005/8/18

Y1 - 2005/8/18

N2 - We analyze the decay processes B → DK, DK*, Dπ, and Dρ in a model-independent way. Using the quark diagram approach, we determine the magnitudes of the relevant amplitudes and the relative strong phase shifts. In order to find the most likely values of the magnitudes and the relative strong phases of the amplitudes in a statistically reliable way, we use the χ2 minimization technique. We find that the strong phase difference between the color-allowed and the color-suppressed tree amplitude can be large and is non-zero at 1σ level with the present data. The color-suppressed tree contributions are found to be sizably enhanced. We also examine the validity of factorization and estimate the breaking effects of flavor SU(3) symmetry in B → DK, Dπ and in B → DK*, Dρ.

AB - We analyze the decay processes B → DK, DK*, Dπ, and Dρ in a model-independent way. Using the quark diagram approach, we determine the magnitudes of the relevant amplitudes and the relative strong phase shifts. In order to find the most likely values of the magnitudes and the relative strong phases of the amplitudes in a statistically reliable way, we use the χ2 minimization technique. We find that the strong phase difference between the color-allowed and the color-suppressed tree amplitude can be large and is non-zero at 1σ level with the present data. The color-suppressed tree contributions are found to be sizably enhanced. We also examine the validity of factorization and estimate the breaking effects of flavor SU(3) symmetry in B → DK, Dπ and in B → DK*, Dρ.

UR - http://www.scopus.com/inward/record.url?scp=22844437745&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22844437745&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2005.06.068

DO - 10.1016/j.physletb.2005.06.068

M3 - Article

AN - SCOPUS:22844437745

VL - 621

SP - 259

EP - 268

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 - 3-4

ER -