Alleviating the B̄ → Dτντ and B̄ → D∗τντ puzzle in the MSSM-Reference-Cited by-同舟云学术

Alleviating the B̄ → Dτντ and B̄ → D∗τντ puzzle in the MSSM

Published:2019-11-20 Issue:32 Volume:34 Page:1950209
ISSN:0217-751X
Container-title:International Journal of Modern Physics A
language:en
Short-container-title:Int. J. Mod. Phys. A

Author:

Boubaa Dris¹²³,Khalil Shaaban³,Moretti Stefano¹

Affiliation:

1. School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK

2. Département de Physique, Faculté des Sciences Exactes et Informatique, Université Hassiba Benbouali de Chlef, Pôle Universitaire d’Ouled Fares, 02180, Chlef, Algeria

3. Center for Fundamental Physics, Zewail City of Science and Technology, Sheikh Zayed, 12588, Giza, Egypt

Abstract

We show that Supersymmetric effects driven by penguin contributions to the [Formula: see text] transition are able to account simultaneously for a sizeable increase of both branching ratios of [Formula: see text] and [Formula: see text] with respect to the Standard Model predictions, thereby approaching their experimentally measured values. We emphasize that a light chargino and neutralino, with masses less than 300 GeV, in addition to a large stau/sneutrino mass and a large [Formula: see text], are essential for enhancing the effect of the lepton penguin [Formula: see text], which is responsible for the improved theoretical predictions with respect to current data.

Funder

H2020-MSCA-RISE

Publisher

World Scientific Pub Co Pte Lt

Subject

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

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217751X19502099

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