abstract

• We observe a signal for the doubly charmed baryon [Formula presented] in the charged decay mode [Formula presented] in data from SELEX, the charm hadroproduction experiment at Fermilab. We observe an excess of 15.9 events over an expected background of [Formula presented] events, a statistical significance of [Formula presented]. The observed mass of this state is [Formula presented]. The Gaussian mass width of this state is [Formula presented], consistent with resolution; its lifetime is less than 33 fs at 90%25 confidence. © 2002 The American Physical Society.

authors

• Alkhazov G.
• Atamantchouk A.G.
• Balatz M.Y.
• Bondar N.F.
• Chensheng M.
• Cooper P.
• Dauwe L.J.
• Davidenko G.V.
• Dersch U.
• Dolgolenko A.G.
• Dzyubenko G.B.
• Edelstein R.
• Emediato L.
• Endler A.M.F.
• Engelfried Jatzkowski Jurgen
• Eschrich I.
• Escobar C.O.
• Evdokimov A.V.
• Filimonov I.S.
• Garcia F.G.
• Gaspero M.
• Giller I.
• Golovtsov V.L.
• Gouffon P.
• Gülmez E.
• Iori M.
• Jun S.Y.
• Kangling H.
• Kaya M.
• Kilmer J.
• Kim V.T.
• Kochenda L.M.
• Konorov I.
• Kozhevnikov A.
• Krivshich A.G.
• Krüger H.
• Kubantsev M.A.
• Kubarovsky V.
• Kulyavtsev A.I.
• Kuropatkin N.P.
• Kurshetsov V.F.
• Kushnirenko A.
• Kwan S.
• Lach J.
• Lamberto A.
• Landsberg L.G.
• Larin I.
• Leikin E.M.
• Luksys M.
• Lungov T.
• Maleev V.P.
• Mao D.
• Mathew P.
• Mattson M.
• Matveev V.
• McCliment E.
• Moinester M.A.
• Molchanov V.
• Morelos A.
• Nelson K.D.
• Nemitkin A.
• Neoustroev P.V.
• Newsom C.
• Nilov A.P.
• Nurushev S.B.
• Ocherashvili A.
• Oliveira E.
• Onel Y.
• Ozel E.
• Ozkorucuklu S.
• Penzo A.
• Petrenko S.I.
• Pogodin P.
• Procario M.
• Prutskoi V.A.
• Ramberg E.
• Rappazzo G.F.
• Razmyslovich B.V.
• Rud V.
• Russ J.
• Schiavon P.
• Shuchen Z.
• Simon J.
• Sitnikov A.I.
• Skow D.
• Smith V.J.
• Srivastava M.
• Steiner V.
• Stepanov V.
• Stutte L.
• Svoiski M.
• Terentyev N.K.
• Thomas G.P.
• Uvarov L.N.
• Vasiliev A.N.
• Vavilov D.V.
• Verebryusov V.S.
• Victorov V.A.
• Vishnyakov V.E.
• Vorobyov A.A.
• Vorwalter K.
• Wenheng Z.
• You J.
• Yunshan L.
• Zhenlin M.
• Zukanovich Funchal R.

publication date

• 2002-01-01

funding provided via

• National Science Foundation, NSF: 9602178  Grant

published in

• Physical Review Letters  Journal

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.89.112001

start page

end page

volume

• 89

issue

• 11