Signatures of new physics in dileptonic B-decays

S. Rai Choudhury; A. S. Cornell; Naveen Gaur; G. C. Joshi

doi:10.1142/S0217751X06029491

Signatures of new physics in dileptonic B-decays

S. Rai Choudhury, A. S. Cornell, Naveen Gaur, G. C. Joshi

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

26 Citations (Scopus)

Abstract

Leptonic decays of B-mesons are theoretically very clean probes for testing the Standard Model (SM) and possible physics beyond it. Amongst the various leptonic decays of the B-meson, the pure dileptonic decay B → ℓ⁺ℓ^- is very important, as this mode is helicity suppressed in the SM but can be substantially enhanced in some of the models beyond the SM, such as supersymmetric (SUSY) theories and the two Higgs doublet model (2HDM). Although the purely dileptonic decay mode is helicity suppressed in the SM its associated mode B → ℓ⁺ℓ^- γ does not have the same suppression, due to the presence of γ in the final state. In this paper we will also analyze the effects of enhanced Z-penguins on these two decay modes.

Original language	English
Pages (from-to)	2617-2634
Number of pages	18
Journal	International Journal of Modern Physics A
Volume	21
Issue number	12
DOIs	https://doi.org/10.1142/S0217751X06029491
Publication status	Published - 10 May 2006
Externally published	Yes

Keywords

B-physics
Beyond Standard Model
Rare decays

ASJC Scopus subject areas

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

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10.1142/S0217751X06029491

Cite this

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title = "Signatures of new physics in dileptonic B-decays",

abstract = "Leptonic decays of B-mesons are theoretically very clean probes for testing the Standard Model (SM) and possible physics beyond it. Amongst the various leptonic decays of the B-meson, the pure dileptonic decay B → ℓ+ℓ- is very important, as this mode is helicity suppressed in the SM but can be substantially enhanced in some of the models beyond the SM, such as supersymmetric (SUSY) theories and the two Higgs doublet model (2HDM). Although the purely dileptonic decay mode is helicity suppressed in the SM its associated mode B → ℓ+ℓ- γ does not have the same suppression, due to the presence of γ in the final state. In this paper we will also analyze the effects of enhanced Z-penguins on these two decay modes.",

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T1 - Signatures of new physics in dileptonic B-decays

AU - Rai Choudhury, S.

AU - Cornell, A. S.

AU - Gaur, Naveen

AU - Joshi, G. C.

PY - 2006/5/10

Y1 - 2006/5/10

N2 - Leptonic decays of B-mesons are theoretically very clean probes for testing the Standard Model (SM) and possible physics beyond it. Amongst the various leptonic decays of the B-meson, the pure dileptonic decay B → ℓ+ℓ- is very important, as this mode is helicity suppressed in the SM but can be substantially enhanced in some of the models beyond the SM, such as supersymmetric (SUSY) theories and the two Higgs doublet model (2HDM). Although the purely dileptonic decay mode is helicity suppressed in the SM its associated mode B → ℓ+ℓ- γ does not have the same suppression, due to the presence of γ in the final state. In this paper we will also analyze the effects of enhanced Z-penguins on these two decay modes.

AB - Leptonic decays of B-mesons are theoretically very clean probes for testing the Standard Model (SM) and possible physics beyond it. Amongst the various leptonic decays of the B-meson, the pure dileptonic decay B → ℓ+ℓ- is very important, as this mode is helicity suppressed in the SM but can be substantially enhanced in some of the models beyond the SM, such as supersymmetric (SUSY) theories and the two Higgs doublet model (2HDM). Although the purely dileptonic decay mode is helicity suppressed in the SM its associated mode B → ℓ+ℓ- γ does not have the same suppression, due to the presence of γ in the final state. In this paper we will also analyze the effects of enhanced Z-penguins on these two decay modes.

KW - B-physics

KW - Beyond Standard Model

KW - Rare decays

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U2 - 10.1142/S0217751X06029491

DO - 10.1142/S0217751X06029491

M3 - Article

AN - SCOPUS:33744471401

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JO - International Journal of Modern Physics A

JF - International Journal of Modern Physics A

IS - 12

ER -

Signatures of new physics in dileptonic B-decays

Abstract

Keywords

ASJC Scopus subject areas

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