Investigating RD and RD∗ anomalies in a left–right model with an inverse seesaw

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Ezzat K., FAISEL G., Khalil S.

European Physical Journal C, vol.83, no.8, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 83 Issue: 8
  • Publication Date: 2023
  • Doi Number: 10.1140/epjc/s10052-023-11901-4
  • Journal Name: European Physical Journal C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, zbMATH, Directory of Open Access Journals
  • Süleyman Demirel University Affiliated: Yes


We investigate RD and RD∗ anomalies in a low scale left–right symmetric model based on SU(3) C× SU(2) L× SU(2) R× U(1) B-L with a simplified Higgs sector consisting of only one bidoublet and one SU(2) R doublet. The Wilson coefficients relevant to the transition b→ cτν are derived by integrating out the charged Higgs H± boson, which gives the dominant contributions. We emphasize that the charged Higgs effects, with the complex right-handed quark mixing matrix, can account for both RD and RD∗ anomalies simultaneously, while adhering to a set of significant constraints including, for instance, BR(Bc-→τ-ν¯τ) and Bs(d)- B¯ s(d) mixing. In relation to this, we show that the predicted values of the D∗ , τ longitudinal polarizations and Pτ(D) can be affected for the set of the parameters of the model resolving the RD,D∗ anomalies.