Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model
Abstract In our recent paper (Das et al. in Phys Rev D 97:115023, 2018) we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of r...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-6171-8 |
| _version_ | 1818293982544789504 |
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| author | Arindam Das Nobuchika Okada Digesh Raut |
| author_facet | Arindam Das Nobuchika Okada Digesh Raut |
| author_sort | Arindam Das |
| collection | DOAJ |
| description | Abstract In our recent paper (Das et al. in Phys Rev D 97:115023, 2018) we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of resonantly produced massive U(1) gauge boson ($$Z^{\prime }$$ Z′ ). We have pointed out that this model can yield a significant enhancement of the branching ratio of the $$Z^\prime $$ Z′ boson to a pair of RHNs, which is crucial for discovering the RHNs under the very severe LHC Run-2 constraint from the search for the $$Z^\prime $$ Z′ boson with dilepton final states. In this paper, we perform a general parameter scan to evaluate the maximum production rate of the same-sign dilepton final states (smoking gun signature of Majorana RHNs production) at the LHC, while reproducing the neutrino oscillation data. We also consider the minimal non-exotic U(1) model with an alternative charge assignment. In this case, we find a further enhancement of the branching ratio of the $$Z^\prime $$ Z′ boson to a pair of RHNs compared to the conventional case, which opens up a possibility of discovering the RHNs even before the $$Z^\prime $$ Z′ boson at the future LHC experiment. |
| first_indexed | 2024-12-13T03:24:30Z |
| format | Article |
| id | doaj.art-3ec24abd13414db59ca74663f0ac5c67 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-13T03:24:30Z |
| publishDate | 2018-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-3ec24abd13414db59ca74663f0ac5c672022-12-22T00:01:18ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-08-0178911110.1140/epjc/s10052-018-6171-8Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard ModelArindam Das0Nobuchika Okada1Digesh Raut2School of Physics, KIASDepartment of Physics and Astronomy, University of AlabamaDepartment of Physics and Astronomy, University of AlabamaAbstract In our recent paper (Das et al. in Phys Rev D 97:115023, 2018) we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of resonantly produced massive U(1) gauge boson ($$Z^{\prime }$$ Z′ ). We have pointed out that this model can yield a significant enhancement of the branching ratio of the $$Z^\prime $$ Z′ boson to a pair of RHNs, which is crucial for discovering the RHNs under the very severe LHC Run-2 constraint from the search for the $$Z^\prime $$ Z′ boson with dilepton final states. In this paper, we perform a general parameter scan to evaluate the maximum production rate of the same-sign dilepton final states (smoking gun signature of Majorana RHNs production) at the LHC, while reproducing the neutrino oscillation data. We also consider the minimal non-exotic U(1) model with an alternative charge assignment. In this case, we find a further enhancement of the branching ratio of the $$Z^\prime $$ Z′ boson to a pair of RHNs compared to the conventional case, which opens up a possibility of discovering the RHNs even before the $$Z^\prime $$ Z′ boson at the future LHC experiment.http://link.springer.com/article/10.1140/epjc/s10052-018-6171-8 |
| spellingShingle | Arindam Das Nobuchika Okada Digesh Raut Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model European Physical Journal C: Particles and Fields |
| title | Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model |
| title_full | Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model |
| title_fullStr | Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model |
| title_full_unstemmed | Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model |
| title_short | Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model |
| title_sort | heavy majorana neutrino pair productions at the lhc in minimal u 1 extended standard model |
| url | http://link.springer.com/article/10.1140/epjc/s10052-018-6171-8 |
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