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C.Farley N.Farry S.Fay R.F.Ferguson D.Fernandez Albor V.Ferreira Rodrigues F.Ferro-Luzzi M.Filippov S.Fiore M.Fiorini M.Firlej M.Fitzpatrick C.Fiutowski T.Fol P.Fontana M.Fontanelli F.Forty R.Francisco O.Frank M.Frei C.Frosini M.Fu J.Furfaro E.Gallas Torreira A.Galli D.Gallorini S.Gambetta S.Gandelman M.Gandini P.Gao Y.García Pardiñas J.Garofoli J.Garra Tico J.Garrido L.Gascon D.Gaspar C.Gauld R.Gavardi L.Geraci A.Gersabeck E.Gersabeck M.Gershon T.Ghez Ph.Gianelle A.Gianì S.Gibson V.Giubega L.Gligorov V.V.Göbel C.Golubkov D.Golutvin A.Gomes A.Gotti C.Grabalosa Gándara M.Graciani Diaz R.Granado Cardoso L.A.Graugés E.Graverini E.Graziani G.Grecu A.Greening E.Gregson S.Griffith P.Grillo L.Grünberg O.Gui B.Gushchin E.Guz Yu.Gys T.Hadjivasiliou C.Haefeli G.Haen C.Haines S.C.Hall S.Hamilton B.Hampson T.Han X.Hansmann-Menzemer S.Harnew N.Harnew S.T.Harrison J.He J.Head T.Heijne V.Hennessy K.Henrard P.Henry L.Hernando Morata J.A.Van Herwijnen E.Heß M.Hicheur A.Hill D.Hoballah M.Hombach 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A.Semennikov A.Sepp I.Serra N.Serrano J.Sestini L.Seyfert P.Shapkin M.Shapoval I.Shcheglov Y.Shears T.Shekhtman L.Shevchenko V.Shires A.Silva Coutinho R.Simi G.Sirendi M.Skidmore N.Skillicorn I.Skwarnicki T.Smith N.A.Smith E.Smith E.Smith J.Smith M.Snoek H.Sokoloff M.D.Soler F.J.P.Soomro F.Souza D.Souza De Paula B.Spaan B.Spradlin P.Sridharan S.Stagni F.Stahl M.Stahl S.Steinkamp O.Stenyakin O.Stevenson S.Stoica S.Stone S.Storaci B.Stracka S.Straticiuc M.Straumann U.Stroili R.Subbiah V.K.Sun L.Sutcliffe W.Swientek K.Swientek S.Syropoulos V.Szczekowski M.Szczypka P.Szumlak T.T'Jampens S.Teklishyn M.Tellarini G.Teubert F.Thomas C.Thomas E.Van Tilburg J.Tisserand V.Tobin M.Todd J.Tolk S.Tomassetti L.Tonelli D.Topp-Joergensen S.Torr N.Tournefier E.Tourneur S.Tran M.T.Tresch M.Trisovic A.Tsaregorodtsev A.Tsopelas P.Tuning N.Ubeda Garcia M.Ukleja A.Ustyuzhanin A.Uwer U.Vacca C.Vagnoni V.Valenti G.Vallier A.Vazquez Gomez R.Vazquez Regueiro P.Vázquez Sierra C.Vecchi S.Velthuis J.J.Veltri M.Veneziano G.Vesterinen M.Viaud B.Vieira D.Vieites Diaz M.Vilasis-Cardona X.Vollhardt A.Volyanskyy D.Voong D.Vorobyev A.Vorobyev V.Voß C.De Vries J.A.Waldi R.Wallace C.Wallace R.Walsh J.Wandernoth S.Wang J.Ward D.R.Watson N.K.Websdale D.Whitehead M.Wicht J.Wiedner D.Wilkinson G.Williams M.P.Williams M.Wilschut H.W.Wilson F.F.Wimberley J.Wishahi J.Wislicki W.Witek M.Wormser G.Wotton S.A.Wright S.Wyllie K.Xie Y.Xing Z.Xu Z.Yang Z.Yuan X.Yushchenko O.Zangoli M.Zavertyaev M.Zhang L.Zhang W.C.Zhang Y.Zhelezov A.Zhokhov A.Zhong L.2024-07-222024-07-22201400319007http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/16799We report on measurements of the mass and lifetime of the Ξ- b baryon using about 1800 Ξ- b decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb-1, collected by the LHCb experiment. The decays are reconstructed in the Ξ- b → Ξ0 cπ-, Ξ0 c → pK-K-π+, channel and the mass and lifetime are measured using the Λ0 b → Λ+ Cπ-, mode as a reference. We measure M (Ξ- b) - M(Λ0 b)= 178.36 ± 0.46 ± 0.16 MeV=c2, (τξ- B/τΛ0 b) = 1.089 ± 0.026 ± 0.011, where the uncertainties are statistical and systematic, respectively. These results lead to a factor of 2 better precision on the Ξ- b mass and lifetime compared to previous best measurements, and are consistent with theoretical expectations. © 2014 CERN, for the LHCb Collaboration.EnglishAll Open Access; Hybrid Gold Open AccessAtomic physicsPhysicsB-decaysData setIntegrated luminosityMeasurements ofPrecision measurementProton proton collisionsHadronsArticle10.1103/PhysRevLett.113.242002