Evidence for an Excess of B ¯ → D ( * ) τ − ν ¯ τ Decays
Centre National de la Recherche Scientifique · Laboratoire d’Annecy de Physique des Particules · +95 more institutions
Abstract
Based on the full BABAR data sample, we report improved measurements of the ratios $\mathcal{R}({D}^{(*)})=\mathcal{B}(\overline{B}\ensuremath{\rightarrow}{D}^{(*)}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}})/\mathcal{B}(\overline{B}\ensuremath{\rightarrow}{D}^{(*)}{\ensuremath{\ell}}_{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})$, where $\ensuremath{\ell}$ is either $e$ or $\ensuremath{\mu}$. These ratios are sensitive to new physics contributions in the form of a charged Higgs boson. We measure $\mathcal{R}(D)=0.440\ifmmode\pm\else\textpm\fi{}0.058\ifmmode\pm\else\textpm\fi{}0.042$ and…
Citation impact
- FWCI
- 73.51
- Percentile
- 100%
- References
- 32
Authors
364- JPJ. P. LeesCorresponding
Centre National de la Recherche Scientifique, Laboratoire d’Annecy de Physique des Particules, University of Warwick, Institut National de Physique Nucléaire et de Physique des Particules
- VPV. Poireau
Centre National de la Recherche Scientifique, Laboratoire d’Annecy de Physique des Particules, University of Warwick, Institut National de Physique Nucléaire et de Physique des Particules
- VTV. Tisserand
Centre National de la Recherche Scientifique, Laboratoire d’Annecy de Physique des Particules, University of Warwick, Institut National de Physique Nucléaire et de Physique des Particules
- JGJ. Garra Ticó
Universitat de Barcelona
- EGE. Graugés
Universitat de Barcelona
Topics & keywords
- Higgs boson
- Physics
- Particle physics
- Type (biology)
Funding
- NSNational Science Foundation
- UDU.S. Department of EnergyAwards: 76SF00515, DE-AC02, AC02-76SF00515, DE-AC02-
- APAlfred P. Sloan Foundation
- ECEuropean CommissionAward: DE-AC02-76SF00515
- DFDeutsche ForschungsgemeinschaftAward: DE-AC02-76SF00515
- BFBundesministerium für Bildung und Forschung
- CNCentre National de la Recherche ScientifiqueAwards: DE-AC02-76SF00515, CNRS-IN2P3
- NSNatural Sciences and Engineering Research Council of Canada
- SAScience and Technology Facilities CouncilAwards: ST/K001418/1, IN2P3, DE-AC02-76SF00515
- INInstitut National de Physique Nucléaire et de Physique des ParticulesAward: DE-AC02-76SF00515
- SNSLAC National Accelerator LaboratoryAwards: AC02-76SF00515, DE-AC02-76SF00515