Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays
The sensitivity of the decays η → π0γγ and ηʹ → π0γγ to a leptophobic B boson in the sub-GeV mass range is summarised in this work. By adding an explicit B-boson resonance exchange to the dominant Standard Model contribution from vector meson exchanges, and employing experimental measurements of the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2022/18/epjconf_confxv2022_06002.pdf |
| _version_ | 1828062327617880064 |
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| author | Escribano Rafel Gonzàlez-Solís Sergi Royo Emilio |
| author_facet | Escribano Rafel Gonzàlez-Solís Sergi Royo Emilio |
| author_sort | Escribano Rafel |
| collection | DOAJ |
| description | The sensitivity of the decays η → π0γγ and ηʹ → π0γγ to a leptophobic B boson in the sub-GeV mass range is summarised in this work. By adding an explicit B-boson resonance exchange to the dominant Standard Model contribution from vector meson exchanges, and employing experimental measurements of the associated branching ratios, the current constraints on the B-boson mass mB and coupling to Standard Model particles αB are significantly improved. From these constraints and the analysis of the available experimental γγ invariant mass distribution of η → π0γγ, we conclude that a B-boson signature in the resonant mass range mπ0 ≲ mB ≲ mη is strongly suppressed and would be very difficult to experimentally identified. The η΄ → π0γγ decay is not as powerful as the η → π0γγ at constraining B-boson parameters below mη but allow exploring larger B-boson masses. Yet, the task of identifying a B-boson with mB ∼ mω would be very challenging. |
| first_indexed | 2024-04-10T22:26:45Z |
| format | Article |
| id | doaj.art-d94ad9151f394647a73e9846ab2f9eab |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-10T22:26:45Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-d94ad9151f394647a73e9846ab2f9eab2023-01-17T09:14:26ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012740600210.1051/epjconf/202227406002epjconf_confxv2022_06002Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decaysEscribano Rafel0Gonzàlez-Solís Sergi1Royo Emilio2Grup de Física Teòrica, Departament de Física, Universitat Autònoma de BarcelonaTheoretical Division, Los Alamos National LaboratoryGrup de Física Teòrica, Departament de Física, Universitat Autònoma de BarcelonaThe sensitivity of the decays η → π0γγ and ηʹ → π0γγ to a leptophobic B boson in the sub-GeV mass range is summarised in this work. By adding an explicit B-boson resonance exchange to the dominant Standard Model contribution from vector meson exchanges, and employing experimental measurements of the associated branching ratios, the current constraints on the B-boson mass mB and coupling to Standard Model particles αB are significantly improved. From these constraints and the analysis of the available experimental γγ invariant mass distribution of η → π0γγ, we conclude that a B-boson signature in the resonant mass range mπ0 ≲ mB ≲ mη is strongly suppressed and would be very difficult to experimentally identified. The η΄ → π0γγ decay is not as powerful as the η → π0γγ at constraining B-boson parameters below mη but allow exploring larger B-boson masses. Yet, the task of identifying a B-boson with mB ∼ mω would be very challenging.https://www.epj-conferences.org/articles/epjconf/pdf/2022/18/epjconf_confxv2022_06002.pdf |
| spellingShingle | Escribano Rafel Gonzàlez-Solís Sergi Royo Emilio Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays EPJ Web of Conferences |
| title | Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays |
| title_full | Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays |
| title_fullStr | Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays |
| title_full_unstemmed | Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays |
| title_short | Searching for a leptophobic B boson through η → π0γγ and ηʹ → π0γγ decays |
| title_sort | searching for a leptophobic b boson through η π0γγ and η π0γγ decays |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/18/epjconf_confxv2022_06002.pdf |
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