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DC Field | Value | Language |
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dc.contributor.author | Aaij, Roel | en |
dc.contributor.author | Beteta, Carlos Abellan | en |
dc.contributor.author | Adeva, Bernardo | en |
dc.contributor.author | Shapkin, Mikhail Mikhaylovich | en |
dc.contributor.author | Panshin, Gennady Leonidovich | en |
dc.contributor.author | Strokov, Sergey Aleksandrovich | en |
dc.date.accessioned | 2021-03-17T09:44:51Z | - |
dc.date.available | 2021-03-17T09:44:51Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Measurement of the mass and production rate of Ξ−b baryons / R. Aaij, C. A. Beteta, B. Adeva [et al.] // Physical Review D. — 2019. — Vol. 99, iss. 5. — [052006, 13 p.]. | en |
dc.identifier.uri | http://earchive.tpu.ru/handle/11683/64806 | - |
dc.description.abstract | The first measurement of the production rate of Ξ−b baryons in pp collisions relative to that of Λ0b baryons is reported, using data samples collected by the LHCb experiment, and corresponding to integrated luminosities of 1, 2 and 1.6 fb−1 at √s=7, 8 and 13 TeV, respectively. In the kinematic region 2<η<6 and pT<20 GeV/c, we measure fΞ−bfΛ0bB(Ξ−b→J/ψΞ−)B(Λ0b→J/ψΛ)=(10.8±0.9±0.8)×10−2 [√s=7,8 TeV], fΞ−bfΛ0bB(Ξ−b→J/ψΞ−)B(Λ0b→J/ψΛ)=(13.1±1.1±1.0)×10−2 [√s=13 TeV], where fΞ−b and fΛ0b are the fragmentation fractions of b quarks into Ξ−b and Λ0b baryons, respectively; B represents branching fractions; and the uncertainties are due to statistical and experimental systematic sources. The values of fΞ−b/fΛ0b are obtained by invoking SU(3) symmetry in the Ξ−b→J/ψΞ− and Λ0b→J/ψΛ decays. Production asymmetries between Ξ−b and ¯Ξ+b baryons are also reported. The mass of the Ξ−b baryon is also measured relative to that of the Λ0b baryon, from which it is found that m(Ξ−b)=5796.70±0.39±0.15±0.17 MeV/c2, where the last uncertainty is due to the precision on the known Λ0b mass. This result represents the most precise determination of the Ξ−b mass. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.ispartof | Physical Review D. 2019. Vol. 99, iss. 5 | en |
dc.rights | info:eu-repo/semantics/openAccess | - |
dc.rights | Attribution-NonCommercial 4.0 International | en |
dc.rights.uri | https://creativecommons.org/licenses/by-nc/4.0/ | - |
dc.source | Physical Review D | en |
dc.title | Measurement of the mass and production rate of Ξ−b baryons | en |
dc.type | Article | en |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dcterms.audience | Researches | en |
local.description.firstpage | 052006 | - |
local.filepath | reprint-nw-34599.pdf | - |
local.filepath | https://doi.org/10.1103/PhysRevD.99.052006 | - |
local.identifier.bibrec | RU\TPU\network\34599 | - |
local.identifier.perskey | RU\TPU\pers\40978 | - |
local.identifier.perskey | RU\TPU\pers\37442 | - |
local.issue | 5 | - |
local.localtype | Статья | ru |
local.volume | 99 | - |
dc.identifier.doi | 10.1103/PhysRevD.99.052006 | - |
Appears in Collections: | Репринты научных публикаций |
Files in This Item:
File | Description | Size | Format | |
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reprint-nw-34599.pdf | 313,23 kB | Adobe PDF | View/Open |
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