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DC Field | Value | Language |
---|---|---|
dc.contributor.author | CMS Collaboration | en_US |
dc.contributor.author | Sirunyan, A. M. | en_US |
dc.contributor.author | DUBE, SOURABH | en_US |
dc.contributor.author | KANSAL, B. | en_US |
dc.contributor.author | PANDEY, S. | en_US |
dc.contributor.author | RANE, A. | en_US |
dc.contributor.author | RASTOGI, A. | en_US |
dc.contributor.author | SHARMA, SEEMA et al. | en_US |
dc.date.accessioned | 2021-07-23T11:33:16Z | |
dc.date.available | 2021-07-23T11:33:16Z | |
dc.date.issued | 2021-06 | en_US |
dc.identifier.citation | Physical Review Letters, 126(25), 252003. | en_US |
dc.identifier.issn | 1079-7114 | en_US |
dc.identifier.issn | 0031-9007 | en_US |
dc.identifier.uri | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/6095 | |
dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.126.252003 | en_US |
dc.description.abstract | The Ξ−bπ+π− invariant mass spectrum is investigated with an event sample of proton proton collisions at √s=13 TeV, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 140fb−1. The ground state Ξ−b is reconstructed via its decays to J/ψΞ−and J/ψΛK−. A narrow resonance, labeled Ξb(6100)−, is observed at a Ξ −bπ+π−invariant mass of 6100.3±0.2(stat)±0.1(syst)±0.6(Ξ−b)MeV, where the last uncertainty reflects the precision of the Ξ−b baryon mass. The upper limit on the Ξb(6100)−natural width is determined to be 1.9 MeV at 95% confidence level. The low Ξb(6100)− signal yield observed in data does not allow a measurement of the quantum numbers of the new state. However, following analogies with the established excited Ξc baryon states, the new Ξb(6100)−resonance and its decay sequence are consistent with the orbitally excited Ξ−b baryon, with spin and parity quantum numbers JP=3/2−. | en_US |
dc.language.iso | en | en_US |
dc.publisher | American Physical Society | en_US |
dc.subject | Physics | en_US |
dc.subject | 2021-JUL-WEEK3 | en_US |
dc.subject | TOC-JUL-2021 | en_US |
dc.subject | 2021 | en_US |
dc.title | Observation of a New Excited Beauty Strange Baryon Decaying to Ξb−π+π− | en_US |
dc.type | Article | en_US |
dc.contributor.department | Dept. of Physics | en_US |
dc.identifier.sourcetitle | Physical Review Letters | en_US |
dc.publication.originofpublisher | Foreign | en_US |
Appears in Collections: | JOURNAL ARTICLES |
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