Search For New Physics at BABAR*

Search For New Physics at BABAR*

Using a full BABAR data sample of 426 fb−1, we present improved measurements of the ratio ℛ(D(∗)) = ℬ(B̅ → D(∗)τ−ν̅τ)/ ℬ(B̅ → D(∗)ℓℓ−ν̅ℓ), where ℓ is either electron or muon. We measure ℛ(D) = 0.440±0.058±0.042 and ℛ(D∗) = 0.332±0.024±0.018. These ratios exceed the Standard Model predictions by 2:0σ...

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Main Author: Godang Romulus
Format: Article
Language:English
Published: EDP Sciences 2013-05-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20134915002
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spelling doaj-555237f3b5d44e9b8e9b0bb4307ef6ef2021-08-02T06:01:20ZengEDP SciencesEPJ Web of Conferences2100-014X2013-05-01491500210.1051/epjconf/20134915002Search For New Physics at BABAR*Godang RomulusUsing a full BABAR data sample of 426 fb−1, we present improved measurements of the ratio ℛ(D(∗)) = ℬ(B̅ → D(∗)τ−ν̅τ)/ ℬ(B̅ → D(∗)ℓℓ−ν̅ℓ), where ℓ is either electron or muon. We measure ℛ(D) = 0.440±0.058±0.042 and ℛ(D∗) = 0.332±0.024±0.018. These ratios exceed the Standard Model predictions by 2:0σ and 2:7σ, respectively. The results disagree with the Standard Model predictions at the level of 3:4σ. The ratios are sensitive to new physics contributions in the form of a charged Higgs boson. However, the access cannot be explained by a charged Higgs boson in the type II two-Higgs-doublet model. http://dx.doi.org/10.1051/epjconf/20134915002
collection DOAJ
language English
format Article
sources DOAJ
author Godang Romulus
spellingShingle Godang Romulus
Search For New Physics at BABAR*
EPJ Web of Conferences
author_facet Godang Romulus
author_sort Godang Romulus
title Search For New Physics at BABAR*
title_short Search For New Physics at BABAR*
title_full Search For New Physics at BABAR*
title_fullStr Search For New Physics at BABAR*
title_full_unstemmed Search For New Physics at BABAR*
title_sort search for new physics at babar*
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2013-05-01
description Using a full BABAR data sample of 426 fb−1, we present improved measurements of the ratio ℛ(D(∗)) = ℬ(B̅ → D(∗)τ−ν̅τ)/ ℬ(B̅ → D(∗)ℓℓ−ν̅ℓ), where ℓ is either electron or muon. We measure ℛ(D) = 0.440±0.058±0.042 and ℛ(D∗) = 0.332±0.024±0.018. These ratios exceed the Standard Model predictions by 2:0σ and 2:7σ, respectively. The results disagree with the Standard Model predictions at the level of 3:4σ. The ratios are sensitive to new physics contributions in the form of a charged Higgs boson. However, the access cannot be explained by a charged Higgs boson in the type II two-Higgs-doublet model.
url http://dx.doi.org/10.1051/epjconf/20134915002
work_keys_str_mv AT godangromulus searchfornewphysicsatbabar
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