EPJ Web of Conferences
Volume 49, 2013HCP 2012 – Hadron Collider Physics Symposium 2012
|Number of page(s)||4|
|Published online||20 May 2013|
Search For New Physics at BABAR*
Department of Physics
University of South Alabama ILB 115, 307 University Blvd., N.
a e-mail: firstname.lastname@example.org
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.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.