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Exploring Lepton Non-universality in \(b \rightarrow c l \bar{\nu }_l\) Decay Modes in the Light of Recent Experimental Data

  • Suchismita SahooEmail author
  • Rukmani Mohanta
  • Anjan K. Giri
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 234)

Abstract

The observation of lepton non-universality in B sector has become a challenge for universality lovers. Recently, the LHCb Collaboration has added a new \(R_{J/\psi }\) ratio into this challenging area, which has a \(2\sigma \) deviation from its standard model prediction. In this regard, we present a model independent analysis of \(b \rightarrow c l \bar{\nu }_l\) decays in order to scrutinize the presence of lepton universality violation in B sector. We first perform a global fit to \(R_{D^{(*)}}\) data. We then estimate the lepton non-universality parameters of \(B_c \rightarrow (\eta _c, J/\psi ) l \nu _l\) and \(B_s \rightarrow D_s^{(*)} l \bar{\nu }_l\) decay processes.

Keywords

Lepton non-universality Global fit 

Notes

Acknowledgements

SS and RM acknowledge the financial support from SERB, Govt. of India.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Suchismita Sahoo
    • 1
    Email author
  • Rukmani Mohanta
    • 2
  • Anjan K. Giri
    • 3
  1. 1.Physical Research LaboratoryTHEPH DivisionAhmedabadIndia
  2. 2.School of PhysicsUniversity of HyderabadHyderabadIndia
  3. 3.Department of PhysicsIIT HyderabadKandiIndia

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