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2003•Journal of Nankai UniversityRequires access

RESEARCH ON B→π TRANSITIONS FORM FACTOR IN LIGHT CONE QCD SUM RULES

Yin Xin-guo

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Abstract

In this paper, the B→π transitions form factor was calculated in improved light-cone QCD sum rules and compared with standard light-cone QCD sum rules. They are basically consistent with each other, but the uncertainties are eleiminated about twist-3 wave function in improved light-cone QCD sum rules, so we can extract the CKM matrix element ｜V_ ub ｜ precisely.

About this research paper

What this paper is about

In this paper, the B→π transitions form factor was calculated in improved light-cone QCD sum rules and compared with standard light-cone QCD sum rules. They are basically consistent with each other, but the uncertainties are eleiminated about twist-3 wave function in improved light-cone QCD sum rules, so we can extract the CKM matrix element ｜V_ ub ｜ precisely.

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Available abstract

In this paper, the B→π transitions form factor was calculated in improved light-cone QCD sum rules and compared with standard light-cone QCD sum rules. They are basically consistent with each other, but the uncertainties are eleiminated about twist-3 wave function in improved light-cone QCD sum rules, so we can extract the CKM matrix element ｜V_ ub ｜ precisely.

Key concepts: Light cone, QCD sum rules, Sum rule in quantum mechanics, Quantum chromodynamics, Physics, Cone (formal languages), Element (criminal law), Particle physics

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