Probing the helicity structure of B → Sγ in Λb → Λγ

T. Mannbl; S. Recksiegel

Probing the helicity structure of B → Sγ in Λ_b → Λγ

T. Mannbl, S. Recksiegel

University of Karlsruhe

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

27 Scopus citations

Abstract

We investigate the rare decay Λ_b → Λγ which receives both short and long distance contributions. We estimate the long distance contributions and find them very small. The form factors are obtained from Λ_c → Λℓν̄_ℓ using heavy quark symmetry and a pole model. The short distance piece opens a window to new physics and we discuss the sensitivity of Λ_b → Λ γ to such effects.

Original language	English
Pages (from-to)	2489-2493
Number of pages	5
Journal	Acta Physica Polonica B
Volume	28
Issue number	11
State	Published - 1997
Externally published	Yes

Cite this

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title = "Probing the helicity structure of B → Sγ in Λb → Λγ",

abstract = "We investigate the rare decay Λb → Λγ which receives both short and long distance contributions. We estimate the long distance contributions and find them very small. The form factors are obtained from Λc → Λℓ{\=ν}ℓ using heavy quark symmetry and a pole model. The short distance piece opens a window to new physics and we discuss the sensitivity of Λb → Λ γ to such effects.",

author = "T. Mannbl and S. Recksiegel",

year = "1997",

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journal = "Acta Physica Polonica B",

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T1 - Probing the helicity structure of B → Sγ in Λb → Λγ

AU - Mannbl, T.

AU - Recksiegel, S.

PY - 1997

Y1 - 1997

N2 - We investigate the rare decay Λb → Λγ which receives both short and long distance contributions. We estimate the long distance contributions and find them very small. The form factors are obtained from Λc → Λℓν̄ℓ using heavy quark symmetry and a pole model. The short distance piece opens a window to new physics and we discuss the sensitivity of Λb → Λ γ to such effects.

AB - We investigate the rare decay Λb → Λγ which receives both short and long distance contributions. We estimate the long distance contributions and find them very small. The form factors are obtained from Λc → Λℓν̄ℓ using heavy quark symmetry and a pole model. The short distance piece opens a window to new physics and we discuss the sensitivity of Λb → Λ γ to such effects.

UR - http://www.scopus.com/inward/record.url?scp=33744509378&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33744509378

SN - 0587-4254

VL - 28

SP - 2489

EP - 2493

JO - Acta Physica Polonica B

JF - Acta Physica Polonica B

IS - 11

ER -

Probing the helicity structure of B → Sγ in Λ_b → Λγ

Abstract

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