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Observation of Λb0→Λc+D¯(∗)0K- and Λb0→Λc+Ds∗- decays.

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Title: Observation of Λb0→Λc+D¯(∗)0K- and Λb0→Λc+Ds∗- decays.
Authors: LHCb Collaboration (AUTHOR), Aaij, R.1 (AUTHOR), Abdelmotteleb, A. S. W.2 (AUTHOR), Beteta, C. Abellan3 (AUTHOR), Abudinén, F.2 (AUTHOR), Ackernley, T.4 (AUTHOR), Adeva, B.5 (AUTHOR), Adinolfi, M.6 (AUTHOR), Adlarson, P.7 (AUTHOR), Agapopoulou, C.8 (AUTHOR), Aidala, C. A.9 (AUTHOR), Ajaltouni, Z.10 (AUTHOR), Akar, S.11 (AUTHOR), Akiba, K.1 (AUTHOR), Albicocco, P.12 (AUTHOR), Albrecht, J.13 (AUTHOR), Alessio, F.8 (AUTHOR), Alexander, M.14 (AUTHOR), Alfonso Albero, A.15 (AUTHOR), Aliouche, Z.16 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Jun2024, Vol. 84 Issue 6, p1-18. 18p.
Abstract: The decays Λ b 0 → Λ c + D ¯ (∗) 0 K - and Λ b 0 → Λ c + D s ∗ - are observed for the first time, in proton-proton collision data at s = 13 Te V , corresponding to an integrated luminosity of 5.4 fb - 1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λ b 0 → Λ c + D s - mode are measured to be B Λ b 0 → Λ c + D ¯ 0 K - B Λ b 0 → Λ c + D s - = 0.1908 - 0.0034 + 0.0036 - 0.0018 + 0.0016 ± 0.0038 , B Λ b 0 → Λ c + D ¯ ∗ 0 K - B Λ b 0 → Λ c + D s - = 0.589 - 0.017 + 0.018 - 0.018 + 0.017 ± 0.012 , B Λ b 0 → Λ c + D s ∗ - B Λ b 0 → Λ c + D s - = 1.668 ± 0.022 - 0.055 + 0.061 , where the first uncertainties are statistical, the second systematic, and the third, for the Λ b 0 → Λ c + D ¯ (∗) 0 K - decays, are due to the uncertainties on the branching fractions of the D s - → K - K + π - and D ¯ 0 → K + π - decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λ b 0 → Λ c + D ¯ (∗) 0 K - decay channels. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
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  Data: Observation of Λb0→Λc+D¯(∗)0K- and Λb0→Λc+Ds∗- decays.
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  Data: <searchLink fieldCode="AR" term="%22LHCb+Collaboration%22">LHCb Collaboration</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aaij%2C+R%2E%22">Aaij, R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abdelmotteleb%2C+A%2E+S%2E+W%2E%22">Abdelmotteleb, A. S. W.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Beteta%2C+C%2E+Abellan%22">Beteta, C. Abellan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Abudinén%2C+F%2E%22">Abudinén, F.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ackernley%2C+T%2E%22">Ackernley, T.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adeva%2C+B%2E%22">Adeva, B.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adinolfi%2C+M%2E%22">Adinolfi, M.</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adlarson%2C+P%2E%22">Adlarson, P.</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Agapopoulou%2C+C%2E%22">Agapopoulou, C.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aidala%2C+C%2E+A%2E%22">Aidala, C. A.</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ajaltouni%2C+Z%2E%22">Ajaltouni, Z.</searchLink><relatesTo>10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Akar%2C+S%2E%22">Akar, S.</searchLink><relatesTo>11</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Akiba%2C+K%2E%22">Akiba, K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Albicocco%2C+P%2E%22">Albicocco, P.</searchLink><relatesTo>12</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Albrecht%2C+J%2E%22">Albrecht, J.</searchLink><relatesTo>13</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alessio%2C+F%2E%22">Alessio, F.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alexander%2C+M%2E%22">Alexander, M.</searchLink><relatesTo>14</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alfonso+Albero%2C+A%2E%22">Alfonso Albero, A.</searchLink><relatesTo>15</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aliouche%2C+Z%2E%22">Aliouche, Z.</searchLink><relatesTo>16</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Jun2024, Vol. 84 Issue 6, p1-18. 18p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The decays Λ b 0 → Λ c + D ¯ (∗) 0 K - and Λ b 0 → Λ c + D s ∗ - are observed for the first time, in proton-proton collision data at s = 13 Te V , corresponding to an integrated luminosity of 5.4 fb - 1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λ b 0 → Λ c + D s - mode are measured to be B Λ b 0 → Λ c + D ¯ 0 K - B Λ b 0 → Λ c + D s - = 0.1908 - 0.0034 + 0.0036 - 0.0018 + 0.0016 ± 0.0038 , B Λ b 0 → Λ c + D ¯ ∗ 0 K - B Λ b 0 → Λ c + D s - = 0.589 - 0.017 + 0.018 - 0.018 + 0.017 ± 0.012 , B Λ b 0 → Λ c + D s ∗ - B Λ b 0 → Λ c + D s - = 1.668 ± 0.022 - 0.055 + 0.061 , <graphic href="10052_2024_12752_Article_Equ3.gif"></graphic> where the first uncertainties are statistical, the second systematic, and the third, for the Λ b 0 → Λ c + D ¯ (∗) 0 K - decays, are due to the uncertainties on the branching fractions of the D s - → K - K + π - and D ¯ 0 → K + π - decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λ b 0 → Λ c + D ¯ (∗) 0 K - decay channels. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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