Search for rare or forbidden decays of the D⁰ meson
We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D⁰→h′[superscript -]h[superscript -]ℓ′[superscript +]ℓ[superscript +] and D⁰→h′[superscript -]h[superscript +]ℓ′[superscript ±]ℓ[superscript ±], where h and h′ represent a K or π m...
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
American Physical Society
2020
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| Acesso em linha: | https://hdl.handle.net/1721.1/125745 |
| _version_ | 1826197282282799104 |
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| author | Cowan, Ray F BABAR Collaboration |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Cowan, Ray F BABAR Collaboration |
| author_sort | Cowan, Ray F |
| collection | MIT |
| description | We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D⁰→h′[superscript -]h[superscript -]ℓ′[superscript +]ℓ[superscript +] and D⁰→h′[superscript -]h[superscript +]ℓ′[superscript ±]ℓ[superscript ±], where h and h′ represent a K or π meson and ℓ and ℓ′ an electron or muon. The analysis is based on 468 fb-¹ of e[superscript +]e[superscript -] annihilation data collected at or close to the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes, and we establish 90% confidence level upper limits on the branching fractions in the range (1.0–30.6)×10-⁷. The limits are between 1 and 3 orders of magnitude more stringent than previous measurements. |
| first_indexed | 2024-09-23T10:45:38Z |
| format | Article |
| id | mit-1721.1/125745 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:45:38Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1257452022-09-30T22:47:33Z Search for rare or forbidden decays of the D⁰ meson Cowan, Ray F BABAR Collaboration Massachusetts Institute of Technology. Laboratory for Nuclear Science We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D⁰→h′[superscript -]h[superscript -]ℓ′[superscript +]ℓ[superscript +] and D⁰→h′[superscript -]h[superscript +]ℓ′[superscript ±]ℓ[superscript ±], where h and h′ represent a K or π meson and ℓ and ℓ′ an electron or muon. The analysis is based on 468 fb-¹ of e[superscript +]e[superscript -] annihilation data collected at or close to the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes, and we establish 90% confidence level upper limits on the branching fractions in the range (1.0–30.6)×10-⁷. The limits are between 1 and 3 orders of magnitude more stringent than previous measurements. 2020-06-09T19:44:00Z 2020-06-09T19:44:00Z 2020-02-19 2020-02-19T15:10:00Z Article http://purl.org/eprint/type/JournalArticle 1079-7114 0031-9007 https://hdl.handle.net/1721.1/125745 BABAR Collaboration (Lees, J.P., et al.), "Search for rare or forbidden decays of the D⁰ meson." Physical Review Letters 124 (Feb. 2020): no. 071802 doi 10.1103/PhysRevLett.124.071802 ©2020 Author(s) en http://dx.doi.org/10.1103/PhysRevLett.124.071802 Physical Review Letters Creative Commons Attribution 3.0 unported license http://creativecommons.org/licenses/by/3.0 application/pdf American Physical Society American Physical Society |
| spellingShingle | Cowan, Ray F BABAR Collaboration Search for rare or forbidden decays of the D⁰ meson |
| title | Search for rare or forbidden decays of the D⁰ meson |
| title_full | Search for rare or forbidden decays of the D⁰ meson |
| title_fullStr | Search for rare or forbidden decays of the D⁰ meson |
| title_full_unstemmed | Search for rare or forbidden decays of the D⁰ meson |
| title_short | Search for rare or forbidden decays of the D⁰ meson |
| title_sort | search for rare or forbidden decays of the d⁰ meson |
| url | https://hdl.handle.net/1721.1/125745 |
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