Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays
Using $pp$ collision data corresponding to an integrated luminosity of $5.4\,{\rm fb}^{-1}$ collected with the LHCb detector at a center-of-mass energy of $13\,{\rm TeV}$, the $B^0\to D^-D^+K^+\pi^-$ decay is studied. A new excited $D_s^+$ meson is observed decaying into the $D^+K^+\pi^-$ final s...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/142450 |
| _version_ | 1826202211495968768 |
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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 | Using $pp$ collision data corresponding to an integrated luminosity of
$5.4\,{\rm fb}^{-1}$ collected with the LHCb detector at a center-of-mass
energy of $13\,{\rm TeV}$, the $B^0\to D^-D^+K^+\pi^-$ decay is studied. A new
excited $D_s^+$ meson is observed decaying into the $D^+K^+\pi^-$ final state
with large statistical significance. The pole mass and width, and the
spin-parity of the new state are measured with an amplitude analysis to be
$m_R=2591\pm6\pm7\,{\rm MeV}$, $\Gamma_R=89\pm16\pm12\,{\rm MeV}$ and
$J^P=0^-$, where the first uncertainty is statistical and the second
systematic. Fit fractions for all components in the amplitude analysis are also
reported. The new resonance, denoted as $D_{s0}(2590)^+$, is a strong candidate
to be the $D_s(2^1{S}_0)^+$ state, the radial excitation of the pseudoscalar
ground-state $D_s^+$ meson. |
| first_indexed | 2024-09-23T12:03:56Z |
| format | Article |
| id | mit-1721.1/142450 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:03:56Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1424502023-07-28T17:32:40Z Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays Williams, Michael Massachusetts Institute of Technology. Department of Physics Using $pp$ collision data corresponding to an integrated luminosity of $5.4\,{\rm fb}^{-1}$ collected with the LHCb detector at a center-of-mass energy of $13\,{\rm TeV}$, the $B^0\to D^-D^+K^+\pi^-$ decay is studied. A new excited $D_s^+$ meson is observed decaying into the $D^+K^+\pi^-$ final state with large statistical significance. The pole mass and width, and the spin-parity of the new state are measured with an amplitude analysis to be $m_R=2591\pm6\pm7\,{\rm MeV}$, $\Gamma_R=89\pm16\pm12\,{\rm MeV}$ and $J^P=0^-$, where the first uncertainty is statistical and the second systematic. Fit fractions for all components in the amplitude analysis are also reported. The new resonance, denoted as $D_{s0}(2590)^+$, is a strong candidate to be the $D_s(2^1{S}_0)^+$ state, the radial excitation of the pseudoscalar ground-state $D_s^+$ meson. 2022-05-10T15:25:38Z 2022-05-10T15:25:38Z 2021 2022-05-10T15:22:14Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142450 Williams, Michael. 2021. "Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays." Physical Review Letters, 126 (12). en 10.1103/PHYSREVLETT.126.122002 Physical Review Letters Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0 application/pdf American Physical Society (APS) APS |
| spellingShingle | Williams, Michael Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays |
| title | Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays |
| title_full | Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays |
| title_fullStr | Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays |
| title_full_unstemmed | Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays |
| title_short | Observation of a New Excited D s + Meson in B 0 → D − D + K + π − Decays |
| title_sort | observation of a new excited d s meson in b 0 d d k π decays |
| url | https://hdl.handle.net/1721.1/142450 |
| work_keys_str_mv | AT williamsmichael observationofanewexciteddsmesoninb0ddkpdecays |