First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb
<p>First observation of the decay <i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> at LHCb</p> <p>...
| Hlavní autoři: | , , , |
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| Médium: | Journal article |
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Springer Verlag
2016
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| _version_ | 1826268397685440512 |
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| author | Aaij, R Adeva, B Adinolfi, M Harnew, N |
| author_facet | Aaij, R Adeva, B Adinolfi, M Harnew, N |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | <p>First observation of the decay <i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> at LHCb</p> <p>A search for <i>B</i><sub>(<i>s</i>)</sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> decays is performed using <i>pp</i> collision data, corresponding to an integrated luminosity of 1.0 fb<sup>−1</sup>, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The <i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> decay is observed for the first time, with a significance of 7.1 standard deviations. The branching fraction is measured to be<br/> 𝓑(<i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K̅</i><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup>) + 𝓑(<i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sup>0</sup><i>K̅</i><sup>∗</sup>(892)<sup>0</sup>)=(16.4 ± 3.4 ± 2.3) × 10<sup>−6</sup>,<br/> where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay <i>B</i><sup>0</sup> → <i>K</i><sub><i>S</i></sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> and an upper limit is set on the branching fraction, 𝓑(<i>B</i><sup>0</sup> → <i>K̅</i><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup>) + 𝓑(<i>B</i><sup>0</sup> → <i>K</i><sup>0</sup><i>K̅</i><sup>∗</sup>(892)<sup>0</sup>) < 0.96 × 10<sup>−6</sup>, at 90 % confidence level. All results are consistent with Standard Model predictions.</p> |
| first_indexed | 2024-03-06T21:09:03Z |
| format | Journal article |
| id | oxford-uuid:3d82f2e0-8c6d-44d4-a78b-b50b4c5222f7 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:09:03Z |
| publishDate | 2016 |
| publisher | Springer Verlag |
| record_format | dspace |
| spelling | oxford-uuid:3d82f2e0-8c6d-44d4-a78b-b50b4c5222f72022-03-26T14:19:46ZFirst observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCbJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3d82f2e0-8c6d-44d4-a78b-b50b4c5222f7Symplectic Elements at OxfordSpringer Verlag2016Aaij, RAdeva, BAdinolfi, MHarnew, N <p>First observation of the decay <i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> at LHCb</p> <p>A search for <i>B</i><sub>(<i>s</i>)</sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> decays is performed using <i>pp</i> collision data, corresponding to an integrated luminosity of 1.0 fb<sup>−1</sup>, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The <i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sub>S</sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> decay is observed for the first time, with a significance of 7.1 standard deviations. The branching fraction is measured to be<br/> 𝓑(<i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K̅</i><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup>) + 𝓑(<i>B</i><sub><i>s</i></sub><sup>0</sup> → <i>K</i><sup>0</sup><i>K̅</i><sup>∗</sup>(892)<sup>0</sup>)=(16.4 ± 3.4 ± 2.3) × 10<sup>−6</sup>,<br/> where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay <i>B</i><sup>0</sup> → <i>K</i><sub><i>S</i></sub><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup> and an upper limit is set on the branching fraction, 𝓑(<i>B</i><sup>0</sup> → <i>K̅</i><sup>0</sup><i>K</i><sup>∗</sup>(892)<sup>0</sup>) + 𝓑(<i>B</i><sup>0</sup> → <i>K</i><sup>0</sup><i>K̅</i><sup>∗</sup>(892)<sup>0</sup>) < 0.96 × 10<sup>−6</sup>, at 90 % confidence level. All results are consistent with Standard Model predictions.</p> |
| spellingShingle | Aaij, R Adeva, B Adinolfi, M Harnew, N First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb |
| title | First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb |
| title_full | First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb |
| title_fullStr | First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb |
| title_full_unstemmed | First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb |
| title_short | First observation of the decay B(s)^0 → K(S)^0K∗(892)^0 at LHCb |
| title_sort | first observation of the decay b s 0 k s 0k∗ 892 0 at lhcb |
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