Observation of a New Excited D+s Meson in B0→D−D+K+π− Decays; Physical Review Letters; Vol. 126, iss. 12
| Parent link: | Physical Review Letters Vol. 126, iss. 12.— 2021.— [122002, 11 p.] |
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| Korporace: | , |
| Další autoři: | , , , , , , |
| Shrnutí: | Title screen Using pp collision data corresponding to an integrated luminosity of 5.4 fb−1 collected with the LHCb detector at a center-of-mass energy of 13 TeV, the B0→D−D+K+π− decay is studied. A new excited D+s meson is observed decaying into the D+K+π− 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 mR=2591±6±7 MeV, ΓR=89±16±12 MeV, and JP=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 Ds0(2590)+, is a strong candidate to be the Ds(21S0)+ state, the radial excitation of the pseudos calar ground-state D+s meson. |
| Jazyk: | angličtina |
| Vydáno: |
2021
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| Témata: | |
| On-line přístup: | https://doi.org/10.1103/PhysRevLett.126.122002 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664668 |
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| 200 | 1 | |a Observation of a New Excited D+s Meson in B0→D−D+K+π− Decays |f R. Aaij, C. A. Beteta, T. Ackernley [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 42 tit.] | ||
| 330 | |a Using pp collision data corresponding to an integrated luminosity of 5.4 fb−1 collected with the LHCb detector at a center-of-mass energy of 13 TeV, the B0→D−D+K+π− decay is studied. A new excited D+s meson is observed decaying into the D+K+π− 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 mR=2591±6±7 MeV, ΓR=89±16±12 MeV, and JP=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 Ds0(2590)+, is a strong candidate to be the Ds(21S0)+ state, the radial excitation of the pseudos calar ground-state D+s meson. | ||
| 461 | |t Physical Review Letters | ||
| 463 | |t Vol. 126, iss. 12 |v [122002, 11 p.] |d 2021 | ||
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| 701 | 1 | |a Ackernley |b T. | |
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