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First Observation of the Radiative Decay Λ b 0 → Λ γ
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First Observation of the Radiative Decay Λ b 0 → Λ γ
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Name
PhysRevLett.123.031801.pdf
Description
Published version
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334.88 KB
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sword-2021-04-22T15:12:10.original.xml (130 B)
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Date Issued
2019
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
© 2019 CERN, for the LHCb Collaboration. The radiative decay Λb0→Λγ is observed for the first time using a data sample of proton-proton collisions corresponding to an integrated luminosity of 1.7 fb-1 collected by the LHCb experiment at a center-of-mass energy of 13 TeV. Its branching fraction is measured exploiting the B0→K∗0γ decay as a normalization mode and is found to be B(Λb0→Λγ)=(7.1±1.5±0.6±0.7)×10-6, where the quoted uncertainties are statistical, systematic, and systematic from external inputs, respectively. This is the first observation of a radiative decay of a beauty baryon.
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Terms of Use
Creative Commons Attribution 4.0 International license
https://creativecommons.org/licenses/by/4.0/
Persistent DSpace Link
https://hdl.handle.net/1721.1/133325
DOI of Published Version
10.1103/PHYSREVLETT.123.031801
