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http://earchive.tpu.ru/handle/11683/64802| Title: | First Observation of the Radiative Decay Λ0b→Λγ |
| Authors: | Aaij, Roel Beteta, Carlos Abellan Adeva, Bernardo Eydelman, Semen Isaakovich Kharisova, Anastasiya Evgenjevna Panshin, Gennady Leonidovich Strokov, Sergey Aleksandrovich |
| Issue Date: | 2019 |
| Publisher: | American Physical Society |
| Citation: | First Observation of the Radiative Decay Λ0b→Λγ / R. Aaij, C. A. Beteta, B. Adeva [et al.] // Physical Review Letters. — 2019. — Vol. 123, iss. 3. — [031801, 11 p.]. |
| Abstract: | The radiative decay Λ0b→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(Λ0b→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. |
| URI: | http://earchive.tpu.ru/handle/11683/64802 |
| Appears in Collections: | Репринты научных публикаций |
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| reprint-nw-34516.pdf | 329,71 kB | Adobe PDF | View/Open |
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