|Vub| determination by B → D8π

Hideaki Hayakawa; Kaoru Hosokawa; Takeshi Kurimoto

doi:10.1142/S021773230301137X

|V_ub| determination by B → D₈π

Hideaki Hayakawa^*, Kaoru Hosokawa, Takeshi Kurimoto

^*Corresponding author for this work

Faculty of Liberal Arts and Sciences

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

We investigate B⁰ → D_s^-π+ decay in perturbative QCD approach which has recently been applied to B-meson decays. B⁰ D_s^-π⁺ decay (and its charge conjugated mode) can be one of the hopeful modes to determine |V_ub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives BR(B⁰ → D_s^-π⁺) = (50-70) × f²_Ds|V_ubV_cs|².

Original language	English
Pages (from-to)	1557-1567
Number of pages	11
Journal	Modern Physics Letters A
Volume	18
Issue number	22
DOIs	https://doi.org/10.1142/S021773230301137X
State	Published - 2003/07/20

Keywords

KM matrix
Non-leptonic B-decay
PQCD approach
V

ASJC Scopus subject areas

Nuclear and High Energy Physics
Astronomy and Astrophysics
General Physics and Astronomy

Access to Document

10.1142/S021773230301137X

Cite this

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title = "|Vub| determination by B → D8π",

abstract = "We investigate B0 → Ds-π+ decay in perturbative QCD approach which has recently been applied to B-meson decays. B0 Ds-π+ decay (and its charge conjugated mode) can be one of the hopeful modes to determine |Vub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives BR(B0 → Ds-π+) = (50-70) × f2Ds|VubVcs|2.",

keywords = "KM matrix, Non-leptonic B-decay, PQCD approach, V",

author = "Hideaki Hayakawa and Kaoru Hosokawa and Takeshi Kurimoto",

note = "Funding Information: The authors thank Prof. M. Yamauchi at KEK for pointing out the possibility of |Vub| determination by B0 → Ds−pi+. T.K. thanks the members of pQCD working group for fruitful discussions and encouragement. The work of T.K. was supported in part by Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science under Grant No. 11640265.",

year = "2003",

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doi = "10.1142/S021773230301137X",

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T1 - |Vub| determination by B → D8π

AU - Hayakawa, Hideaki

AU - Hosokawa, Kaoru

AU - Kurimoto, Takeshi

N1 - Funding Information: The authors thank Prof. M. Yamauchi at KEK for pointing out the possibility of |Vub| determination by B0 → Ds−pi+. T.K. thanks the members of pQCD working group for fruitful discussions and encouragement. The work of T.K. was supported in part by Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science under Grant No. 11640265.

PY - 2003/7/20

Y1 - 2003/7/20

N2 - We investigate B0 → Ds-π+ decay in perturbative QCD approach which has recently been applied to B-meson decays. B0 Ds-π+ decay (and its charge conjugated mode) can be one of the hopeful modes to determine |Vub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives BR(B0 → Ds-π+) = (50-70) × f2Ds|VubVcs|2.

AB - We investigate B0 → Ds-π+ decay in perturbative QCD approach which has recently been applied to B-meson decays. B0 Ds-π+ decay (and its charge conjugated mode) can be one of the hopeful modes to determine |Vub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives BR(B0 → Ds-π+) = (50-70) × f2Ds|VubVcs|2.

KW - KM matrix

KW - Non-leptonic B-decay

KW - PQCD approach

KW - V

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