Effects of Kaluza-Klein neutrinos on RD and RD⁎
Recent measurements of RD and RD⁎ by the LHCb collaboration show deviations from their respective Standard Model values. These semileptonic B meson decays, associated with b→cτν¯ transition, are pointing toward new physics beyond the Standard Model via leptonic flavor universality violation. In this...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S037026932300638X |
| _version_ | 1797363810202288128 |
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| author | Janus Capellan Aban Chuan-Ren Chen Chrisna Setyo Nugroho |
| author_facet | Janus Capellan Aban Chuan-Ren Chen Chrisna Setyo Nugroho |
| author_sort | Janus Capellan Aban |
| collection | DOAJ |
| description | Recent measurements of RD and RD⁎ by the LHCb collaboration show deviations from their respective Standard Model values. These semileptonic B meson decays, associated with b→cτν¯ transition, are pointing toward new physics beyond the Standard Model via leptonic flavor universality violation. In this paper, we show that such anomaly can be resolved by the cummulative Kaluza-Klein (KK) modes of singlet right-handed neutrino which propagates in the large extra dimensional space. We found that the number of extra dimension should be 2 to explain RD and RD⁎. We show that both RD and RD⁎ constraint the energy scale MF of this extra dimension which are compatible with the limits from lepton flavor violating tau decays. In contrast, our findings are in tension with the limits coming from the neutrino experiments which set the most stringent lower bound on MF. The future measurements of RD(⁎)exp with reduced uncertainties will exclude this extra dimensional model with right-handed neutrino propagating in the bulk, if the central values stay. |
| first_indexed | 2024-03-08T16:26:17Z |
| format | Article |
| id | doaj.art-6f18018ed73a43f9a24e26a1c5e2a637 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-03-08T16:26:17Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-6f18018ed73a43f9a24e26a1c5e2a6372024-01-07T04:27:08ZengElsevierPhysics Letters B0370-26932024-01-01848138304Effects of Kaluza-Klein neutrinos on RD and RD⁎Janus Capellan Aban0Chuan-Ren Chen1Chrisna Setyo Nugroho2Department of Physics, National Taiwan Normal University, Taipei 116, TaiwanCorresponding author.; Department of Physics, National Taiwan Normal University, Taipei 116, TaiwanDepartment of Physics, National Taiwan Normal University, Taipei 116, TaiwanRecent measurements of RD and RD⁎ by the LHCb collaboration show deviations from their respective Standard Model values. These semileptonic B meson decays, associated with b→cτν¯ transition, are pointing toward new physics beyond the Standard Model via leptonic flavor universality violation. In this paper, we show that such anomaly can be resolved by the cummulative Kaluza-Klein (KK) modes of singlet right-handed neutrino which propagates in the large extra dimensional space. We found that the number of extra dimension should be 2 to explain RD and RD⁎. We show that both RD and RD⁎ constraint the energy scale MF of this extra dimension which are compatible with the limits from lepton flavor violating tau decays. In contrast, our findings are in tension with the limits coming from the neutrino experiments which set the most stringent lower bound on MF. The future measurements of RD(⁎)exp with reduced uncertainties will exclude this extra dimensional model with right-handed neutrino propagating in the bulk, if the central values stay.http://www.sciencedirect.com/science/article/pii/S037026932300638X |
| spellingShingle | Janus Capellan Aban Chuan-Ren Chen Chrisna Setyo Nugroho Effects of Kaluza-Klein neutrinos on RD and RD⁎ Physics Letters B |
| title | Effects of Kaluza-Klein neutrinos on RD and RD⁎ |
| title_full | Effects of Kaluza-Klein neutrinos on RD and RD⁎ |
| title_fullStr | Effects of Kaluza-Klein neutrinos on RD and RD⁎ |
| title_full_unstemmed | Effects of Kaluza-Klein neutrinos on RD and RD⁎ |
| title_short | Effects of Kaluza-Klein neutrinos on RD and RD⁎ |
| title_sort | effects of kaluza klein neutrinos on rd and rd |
| url | http://www.sciencedirect.com/science/article/pii/S037026932300638X |
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