First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c +
© 2020 CERN. The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the...
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/142464 |
| _version_ | 1826203839219367936 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | © 2020 CERN. The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξc0→π-Λc+), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξc+→pK-π+)=(1.135±0.002±0.387)% is measured. |
| first_indexed | 2024-09-23T12:44:24Z |
| format | Article |
| id | mit-1721.1/142464 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:44:24Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1424642023-06-26T19:32:34Z First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + Williams, Michael Massachusetts Institute of Technology. Department of Physics © 2020 CERN. The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξc0→π-Λc+), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξc+→pK-π+)=(1.135±0.002±0.387)% is measured. 2022-05-11T13:43:49Z 2022-05-11T13:43:49Z 2020 2022-05-11T13:41:01Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142464 Williams, Michael. 2020. "First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c +." Physical Review D, 102 (7). en 10.1103/PHYSREVD.102.071101 Physical Review D Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0 application/pdf American Physical Society (APS) APS |
| spellingShingle | Williams, Michael First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + |
| title | First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + |
| title_full | First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + |
| title_fullStr | First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + |
| title_full_unstemmed | First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + |
| title_short | First branching fraction measurement of the suppressed decay Ξ c 0 → π − Λ c + |
| title_sort | first branching fraction measurement of the suppressed decay ξ c 0 π λ c |
| url | https://hdl.handle.net/1721.1/142464 |
| work_keys_str_mv | AT williamsmichael firstbranchingfractionmeasurementofthesuppresseddecayxc0plc |