Observation of excited Ω0c baryons in Ω−b→Ξ+cK−π− decays
| Parent link: | Physical Review D: particles, fields, gravitation, and cosmology.— , 1970- Vol. 104, iss. 9.— 2021.— [L091102, 14 p.] |
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| Corporate Authors: | , |
| 其他作者: | , , , , , |
| 總結: | Title screen The first observation of the Ω−b→Ξ+cK−π− decay is reported using p p collision data at center of mass energies of 7, 8, and 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. Four excited Ω0c baryons are observed in the Ξ+c K− mass projection of the Ω−b→Ξ+cK−π− decays with the significance of each exceeding five standard deviations. They coincide with the states previously observed in prompt pp and e+e− production. Relative production rates, masses, and natural widths of the states are measured, and a test of spin hypotheses is performed. Moreover, the branching ratio of Ω−b→Ξ+cK−π− is measured relative to the Ω−b→Ω0cπ− decay mode and a precise measurement of the Ω−b mass of 6044.3±1.2±1.1+0.19−0.22 MeV is obtained. Режим доступа: по договору с организацией-держателем ресурса |
| 語言: | 英语 |
| 出版: |
2021
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| 主題: | |
| 在線閱讀: | http://earchive.tpu.ru/handle/11683/72497 https://doi.org/10.1103/PhysRevD.104.L091102 |
| 格式: | 電子 Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667698 |