Skip to main content
SpringerLink
Log in

Looking for new physics in leptonic and semileptonic decays of B-meson

  • Physics of Elementary Particles and Atomic Nuclei. Theory
  • Published:
Physics of Particles and Nuclei Letters Aims and scope Submit manuscript

Abstract

We probe possible new physics (NP) effects beyond the standard model (SM) in the decays \({\overline B ^0} \to \pi \tau \overline \upsilon ,{\overline B ^0} \to \rho \tau \overline \upsilon ,and{\overline B ^0} \to \tau \overline \upsilon \), based on an effective Hamiltonian including non-SM operators. Experimental constraints on different NP scenarios are provided by recent measurements of the ratios \({{R\left( {{D^{\left( * \right)}}} \right) \equiv B\left( {{{\overline B }^0} \to {D^{\left( * \right)}}\tau \overline \upsilon } \right)} \mathord{\left/ {\vphantom {{R\left( {{D^{\left( * \right)}}} \right) \equiv B\left( {{{\overline B }^0} \to {D^{\left( * \right)}}\tau \overline \upsilon } \right)} {B\left( {{{\overline B }^0} \to {D^{\left( * \right)}}\mu \overline \upsilon } \right)}}} \right. \kern-\nulldelimiterspace} {B\left( {{{\overline B }^0} \to {D^{\left( * \right)}}\mu \overline \upsilon } \right)}}\), as well as the branching \(B\left( {{B^ - } \to \tau \overline \upsilon } \right)\). The corresponding hadronic form factors and leptonic decay constants are calculated in the covariant confined quark model developed by us.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. J. P. Lees et al. (BABAR Collab.), “Measurement of an excess of \(\overline B \to {D^{\left( * \right)}}{\tau ^ - }{\overline \upsilon _\tau }\) decays and implications for charged higgs bosons,” Phys. Rev. D 88, 072012 (2013); arXiv:1303.0571 [hep-ex]. doi 10.1103/Phys-RevD.88.072012

    Article  ADS  Google Scholar 

  2. M. Huschle et al. (Belle Collab.), “Measurement of the branching ratio of \(\overline B \to {D^{\left( * \right)}}{\tau ^ - }{\overline \upsilon _\tau }\) relative to \(\overline B \to {D^{\left( * \right)}}{l^ - }{\overline \upsilon _l}\) decays with hadronic tagging at Belle,” Phys. Rev. D 92, 072014 (2015); arXiv:1507.03233 [hepex]. doi 10.1103/PhysRevD.92.07201410.1103/Phys-RevD.92.072014

    Article  ADS  Google Scholar 

  3. Y. Sato et al. (Belle Collab.), “Measurement of the branching ratio of \({\bar B^0} \to {D^{* + }}{\tau ^ - }{\bar \upsilon _\tau }\) relative to \({\bar B^0} \to {D^{* + }}{l^ - }{\bar \upsilon _l}\) decays with a semileptonic tagging method,” Phys. Rev. D 94, 072007 (2016); arXiv:1607.07923 [hep-ex]. doi 10.1103/Phys-RevD.94.07200710.1103/PhysRevD.94.072007

    Article  ADS  Google Scholar 

  4. S. Hirose et al. (Belle Collab.), “Measurement of the lepton polarization and R(D*) in the decay \(\bar B \to {D^{* + }}{\tau ^ - }{\bar \upsilon _\tau }\)” arXiv:1607.07923 [hep-ex] (2016).

    Google Scholar 

  5. R. Aaij et al. (LHCb Collab.), “Measurement of the ratio of branching fractions \({{B\left( {{{\bar B}^0} \to {D^{\left( * \right)}}\tau \bar \upsilon } \right)} \mathord{\left/ {\vphantom {{B\left( {{{\bar B}^0} \to {D^{\left( * \right)}}\tau \bar \upsilon } \right)} {B\left( {{{\bar B}^0} \to {D^{* + }}{\mu ^ - }\bar \upsilon } \right)}}} \right. \kern-\nulldelimiterspace} {B\left( {{{\bar B}^0} \to {D^{* + }}{\mu ^ - }\bar \upsilon } \right)}}{\text{ }}\) ,” Phys. Rev. Lett. 115, 111803 (2015); arXiv:1506.08614 [hep-ex]. doi 10.1103/PhysRevLett.115.15990110.1103/PhysRevLett.115.159901

    Article  ADS  Google Scholar 

  6. Heavy Flavor Averaging Group (HFAG Collab.), Preliminary Results. http://www.slac.stanford.edu/xorg/hfag/semi/moriond17/RDRDs.html.

  7. H. Na, C. M. Bouchard, G. P. Lepage, C. Monahan, and J. Shigemitsu (HPQCD Collab.), “V cb ” Phys. Rev. D 92, 054510 (2015); arXiv:1505.03925 [heplat]. doi 10.1103/PhysRevD.92.05451010.1103/Phys-RevD.92.054510

    Article  ADS  Google Scholar 

  8. S. Fajfer, J. F. Kamenik, and I. Nisandzic, “On the \({\bar B^0} \to {D^{\left( * \right)}}\tau {\bar \upsilon _\tau }\) sensitivity to new physics,” Phys. Rev. D 85, 094025 (2012); arXiv:1203.2654 [hep-ph]. doi 10.1103/PhysRevD.85.094025

    Article  ADS  Google Scholar 

  9. M. A. Ivanov, J. G. Körner, and C. T. Tran, “Probing new physics in \({\bar B^0} \to {D^{\left( * \right)}}{\tau ^ - }{\bar \upsilon _\tau }\) using the longitudinal, transverse, and normal polarization components of the tau lepton,” Phys. Rev. D 95, 036021 (2017); arXiv:1701.02937 [hep-ph]. doi 10.1103/Phys-RevD.95.03602110.1103/PhysRevD.95.036021

    Article  ADS  Google Scholar 

  10. P. Hamer et al. (Belle Collab.), “Search for B0 → π-τ+ντ with hadronic tagging at Belle,” Phys. Rev. D 93, 032007 (2016); arXiv:1509.06521 [hep-ex]. doi 10.1103/Phys-RevD.93.03200710.1103/PhysRevD.93.032007

    Article  ADS  Google Scholar 

  11. C. Patrignani et al. (Particle Data Group), “Review of particle physics,” Chin. Phys. C 40, 100001 (2016). doi 10.1088/1674-1137/40/10/100001

    Article  ADS  Google Scholar 

  12. M. Bona et al. (UTfit Collab.), “An improved standard model prediction of BR(B → τν) and its implications for new physics,” Phys. Lett. B 687, 61–69 (2010); arXiv:0908.3470 [hep-ph]. doi 10.1016/j.physletb.2010.02.063; Preliminary Results at http://www.utfit.org/UTfit/ResultsSummer2016SM. 10.1016/j.physletb.2010.02.063

    Article  ADS  Google Scholar 

  13. C. H. Chen and C. Q. Geng, “Charged Higgs on \(\bar B \to \tau {\bar \upsilon _\tau }and\bar B \to P\left( V \right)\lambda {\bar \upsilon _l}\)” J. High Energy Phys. 10, 053 (2006); arXiv:hep-ph/0608166. doi 10.1088/1126-6708/2006/10/05310.1088/1126-6708/2006/10/053

    Article  ADS  Google Scholar 

  14. A. Khodjamirian, T. Mannel, N. Offen, and Y.-M. Wang, “V ub from QCD light-cone sum rules,” Phys. Rev. D 83, 094031 (2011); arXiv:1103.2655 [hep-ph]. doi 10.1103/Phys-RevD.83.094031

    Article  ADS  Google Scholar 

  15. F. U. Bernlochner, “\(\bar B \to \pi \tau {\bar \upsilon _\tau }\) decay in the context of type II 2HDM,” Phys. Rev. D 92, 115019 (2015); arXiv:1509.06938 [hep-ph]. doi 10.1103/PhysRevD.92.11501910.1103/PhysRevD.92.115019

    Article  ADS  Google Scholar 

  16. C. S. Kim and R. M. Wang, “Study of the exclusive \(b \to u{l^ - }{\overline \upsilon _l}\) decays in the MSSM with and without R-parity violation,” Phys. Rev. D 77, 094006 (2008); arXiv:0712.2954 [hep-ph]. doi 10.1103/Phys-RevD.77.094006

    Article  ADS  Google Scholar 

  17. M. Tanaka and R. Watanabe, “New physics contributions in \(\bar B \to \pi \tau \bar \upsilon \) and \(B \to \tau \bar \upsilon \)” Prog. Theor. Exp. Phys. 2017, 013B05 (2017); arXiv:1608.05207 [hep-ph]. doi 10.1093/ptep/ptw17510.1093/ptep/ptw175

    Google Scholar 

  18. R. Dutta, A. Bhol, and A. K. Giri, “Effective theory approach to new physics in b → u and b → c leptonic and semileptonic decays,” Phys. Rev. D 88, 114023 (2013). arXiv:1307.6653 [hep-ph]. doi 10.1103/PhysRevD.88.114023

    Article  ADS  Google Scholar 

  19. A. Celis, M. Jung, X. Q. Li, and A. Pich, “Scalar contributions to b → c(u)τν transitions,” arXiv:1612.07757 [hep-ph] (2016).

    Google Scholar 

  20. T. Branz, A. Faessler, T. Gutsche, M. A. Ivanov, J. G. Körner, and V. E. Lyubovitskij, “Relativistic constituent quark model with infrared confinement,” Phys. Rev. D 81, 034010 (2010); arXiv:0912.3710 [hep-ph]. doi 10.1103/PhysRevD.81.034010

    Article  ADS  Google Scholar 

  21. M. A. Ivanov, J. G. Körner, S. G. Kovalenko, P. Santorelli, and G. G. Saidullaeva, “Form factors for semileptonic, nonleptonic and rare B(B s) meson decays,” Phys. Rev. D 85, 034004 (2012); arXiv:1112.3536 [hep-ph]. doi 10.1103/PhysRevD.85.034004

    Article  ADS  Google Scholar 

  22. M. A. Ivanov and C. T. Tran, “Exclusive decays \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-\nulldelimiterspace} \psi } \to D_{\left( s \right)}^{{{\left( * \right)}^ - }}{l^ + }{\upsilon _l}\) in a covariant constituent quark model with infrared confinement,” Phys. Rev. D 92, 074030 (2015); arXiv:1701.07377 [hep-ph]. doi 10.1103/PhysRevD.92.07403010.1103/PhysRevD.92.074030

    Article  ADS  Google Scholar 

  23. J. G. Körner and G. A. Schuler, “Lepton mass effects in semileptonic B meson decays,” Phys. Lett. B 231, 306–311 (1989). doi 10.1016/0370-2693(89)90220-7

    Article  ADS  Google Scholar 

  24. J. G. Körner and G. A. Schuler, “Exclusive semileptonic heavy meson decays including lepton mass effects,” Z. Phys. C 46, 93 (1990). doi 10.1007/BF02440838

    ADS  Google Scholar 

  25. M. A. Ivanov, J. G. Korner, and C. T. Tran, “Exclusive decays \(B \to {l^ - }\overline \upsilon \) and \(B \to {D^{\left( * \right)}}{l^ - }\overline \upsilon \) in the covariant quark model,” Phys. Rev. D 92, 114022 (2015); arXiv:1508.02678 [hep-ph]. doi 10.1103/PhysRevD.92.11402210.1103/PhysRevD.92.114022

    Article  ADS  Google Scholar 

  26. M. A. Ivanov, J. G. Korner, and C. T. Tran, “Analyzing new physics in the decays \({\overline B ^0} \to {D^{\left( * \right)}}{\tau ^ - }\overline \upsilon \) with form factors obtained from the covariant quark model,” Phys. Rev. D 94, 094028 (2016); arXiv:1607.02932 [hep-ph]. doi 10.1103/PhysRevD.94.09402810.1103/Phys-RevD.94.094028

    Article  ADS  Google Scholar 

  27. A. Sibidanov et al. (Belle Collab.), “ V ub using full reconstruction tagging at the belle experiment,” Phys. Rev. D 88, 032005 (2013); arXiv:1306.2781 [hep-ex]. doi 10.1103/PhysRevD.88.032005

    Article  ADS  Google Scholar 

  28. P. Sanchez del Amo et al. (BABAR Collab.), “V ub,” Phys. Rev. D 83, 032007 (2011); arXiv:1005.3288 [hep-ex]. doi 10.1103/PhysRevD.83.032007

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, 141980, Russia

    M. A. Ivanov & C. T. Tran

  2. Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany

    J. G. Körner

Authors
  1. M. A. Ivanov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. G. Körner
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. C. T. Tran
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to M. A. Ivanov.

Additional information

The article is published in the original.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ivanov, M.A., Körner, J.G. & Tran, C.T. Looking for new physics in leptonic and semileptonic decays of B-meson. Phys. Part. Nuclei Lett. 14, 669–676 (2017). https://doi.org/10.1134/S1547477117050053

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1547477117050053

Search

Navigation