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  • Ablikim, M.Inst High Energy Phys, Beijing 100049, Peoples R China (author)

Observation of chi(cJ) -> Lambda(Lambda)over-bar(eta)

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • American Physical Society,2022
  • electronicrdacarrier

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  • LIBRIS-ID:oai:DiVA.org:uu-493920
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-493920URI
  • https://doi.org/10.1103/PhysRevD.106.072004DOI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

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  • For complete list of authors see http://dx.doi.org/10.1103/PhysRevD.106.072004
  • By analyzing (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays of chi(cJ) -> Lambda(Lambda) over bar (eta) (J = 0, 1, and 2) are observed for the first time with statistical significances of 13.9 sigma, 6.7 sigma, and 8.2 sigma, respectively. The product branching fractions of psi(3686) -> gamma chi(cJ) and chi(cJ) -> Lambda(Lambda) over bar (eta) are measured. Dividing by the world averages of the branching fractions of psi(3686) -> gamma chi(cJ), the branching fractions of chi(cJ) -> Lambda(Lambda) over bar (eta) decays are determined to be (2.31 +/- 0.30 +/- 0.21) x 10(-4), (5.86 +/- 1.38 +/- 0.68) x 10(-5), and (1.05 +/- 0.21 +/- 0.15) x 10(-4) for J = 0, 1 and 2, respectively, where the first uncertainties are statistical and the second systematic.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Adlarson, PatrikUppsala universitet,Kärnfysik(Swepub:uu)patad399 (author)
  • Johansson, TordUppsala universitet,Kärnfysik(Swepub:uu)tordjoha (author)
  • Kupsc, AndrzejUppsala universitet,Kärnfysik,Natl Ctr Nucl Res, PL-02093 Warsaw, Poland.(Swepub:uu)andrkups (author)
  • Schönning, Karin,1978-Uppsala universitet,Kärnfysik(Swepub:uu)kasch734 (author)
  • Thorén, ViktorUppsala universitet,Kärnfysik(Swepub:uu)vikth925 (author)
  • Wolke, MagnusUppsala universitet,Kärnfysik(Swepub:uu)mawol031 (author)
  • Zou, J. H.Inst High Energy Phys, Beijing 100049, Peoples R China (author)
  • Inst High Energy Phys, Beijing 100049, Peoples R ChinaKärnfysik (creator_code:org_t)

Related titles

  • In:Physical Review D: American Physical Society106:72470-00102470-0029

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