EFFECT OF BOTH Z AND Z′ MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS ON THE BARYONIC RARE DECAY Λb→Λℓ+ℓ

Autor:	C. K. Das, L. Maharana, Sukadev Sahoo
Rok vydání:	2009
Předmět:	Physics Baryon Nuclear and High Energy Physics Particle physics Branching fraction Physics beyond the Standard Model Heavy quark effective theory Astronomy and Astrophysics Atomic and Molecular Physics and Optics Flavor Boson Standard Model
Zdroj:	International Journal of Modern Physics A. 24:6223-6235
ISSN:	1793-656X 0217-751X
DOI:	10.1142/s0217751x09047727
Popis:	We study the effect of both Z and Z′ mediated flavor-changing neutral currents (FCNCs) on the Λb→Λℓ+ℓ-(ℓ = μ, τ) rare decay. We find the branching ratio is reasonably enhanced from its Standard Model value due to the effect of both Z and Z′ mediated FCNCs, and gives the possibility of new physics beyond the Standard Model. The contribution of Z′ boson depends upon the precise value of MZ′.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1896c519deeef8b7981486d6ee13df40 https://doi.org/10.1142/s0217751x09047727 Zobrazit plný text záznamu