Form factors for B → πlv decay in a model constrained by chiral symmetry and quark model

Riazuddin; T. A. Al-Aithan; Amjad Hussain Shah Gilani

doi:10.1142/S0217751X02012326

Form factors for B → πlv decay in a model constrained by chiral symmetry and quark model

Riazuddin^*, T. A. Al-Aithan, Amjad Hussain Shah Gilani

^*Corresponding author for this work

Department of Physics

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

7 Scopus citations

Abstract

The form factors for the B → π transition are evaluated in the entire momentum transfer range by using the constraints obtained in the framework combining the heavy quark expansion and chiral symmetry for light quarks and the quark model. In particular, we calculate the valence quark contribution and show that it together with the equal time commutator contribution give to the form factors a pole behavior with the heavy (B-meson in our case) mass as the pole mass. This is in addition to the usual vector meson B*-pole diagram for B → πlv in the above framework. We discuss the predictions in our model, which provide an estimate of |V_ub|².

Original language	English
Pages (from-to)	4927-4938
Number of pages	12
Journal	International Journal of Modern Physics A
Volume	17
Issue number	32
DOIs	https://doi.org/10.1142/S0217751X02012326
State	Published - 30 Dec 2002

Bibliographical note

Funding Information:
Riazuddin and T. A. Al-Aithan wish to acknowledge the support of King Fahd University of Petroleum and Minerals for this work while A. H. S. Gilani thanks the Abdus Salam International Center for Theoretical Physics for support. We also thank Th. Feldmann for helpful comments and informing us of Refs. 32 and 36.

Keywords

B-π form factors
CKM matrix elements V
Chiral symmetry
Valance quark

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Astronomy and Astrophysics

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10.1142/S0217751X02012326

Cite this

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title = "Form factors for B → πlv decay in a model constrained by chiral symmetry and quark model",

abstract = "The form factors for the B → π transition are evaluated in the entire momentum transfer range by using the constraints obtained in the framework combining the heavy quark expansion and chiral symmetry for light quarks and the quark model. In particular, we calculate the valence quark contribution and show that it together with the equal time commutator contribution give to the form factors a pole behavior with the heavy (B-meson in our case) mass as the pole mass. This is in addition to the usual vector meson B*-pole diagram for B → πlv in the above framework. We discuss the predictions in our model, which provide an estimate of |Vub|2.",

keywords = "B-π form factors, CKM matrix elements V, Chiral symmetry, Valance quark",

author = "Riazuddin and Al-Aithan, \{T. A.\} and Gilani, \{Amjad Hussain Shah\}",

note = "Funding Information: Riazuddin and T. A. Al-Aithan wish to acknowledge the support of King Fahd University of Petroleum and Minerals for this work while A. H. S. Gilani thanks the Abdus Salam International Center for Theoretical Physics for support. We also thank Th. Feldmann for helpful comments and informing us of Refs. 32 and 36.",

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AU - Riazuddin,

AU - Al-Aithan, T. A.

AU - Gilani, Amjad Hussain Shah

N1 - Funding Information: Riazuddin and T. A. Al-Aithan wish to acknowledge the support of King Fahd University of Petroleum and Minerals for this work while A. H. S. Gilani thanks the Abdus Salam International Center for Theoretical Physics for support. We also thank Th. Feldmann for helpful comments and informing us of Refs. 32 and 36.

PY - 2002/12/30

Y1 - 2002/12/30

N2 - The form factors for the B → π transition are evaluated in the entire momentum transfer range by using the constraints obtained in the framework combining the heavy quark expansion and chiral symmetry for light quarks and the quark model. In particular, we calculate the valence quark contribution and show that it together with the equal time commutator contribution give to the form factors a pole behavior with the heavy (B-meson in our case) mass as the pole mass. This is in addition to the usual vector meson B*-pole diagram for B → πlv in the above framework. We discuss the predictions in our model, which provide an estimate of |Vub|2.

AB - The form factors for the B → π transition are evaluated in the entire momentum transfer range by using the constraints obtained in the framework combining the heavy quark expansion and chiral symmetry for light quarks and the quark model. In particular, we calculate the valence quark contribution and show that it together with the equal time commutator contribution give to the form factors a pole behavior with the heavy (B-meson in our case) mass as the pole mass. This is in addition to the usual vector meson B*-pole diagram for B → πlv in the above framework. We discuss the predictions in our model, which provide an estimate of |Vub|2.

KW - B-π form factors

KW - CKM matrix elements V

KW - Chiral symmetry

KW - Valance quark

UR - https://www.scopus.com/pages/publications/0037203335

U2 - 10.1142/S0217751X02012326

DO - 10.1142/S0217751X02012326

M3 - Article

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VL - 17

SP - 4927

EP - 4938

JO - International Journal of Modern Physics A

JF - International Journal of Modern Physics A

IS - 32

ER -

Form factors for B → πlv decay in a model constrained by chiral symmetry and quark model

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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