Search for the pentaquark via the P0c̄s→K∗0K−p decay
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Search for the pentaquark via the P0c̄s→K∗0K−p decay

E.M. Aitala,S. Amato,J.C. Anjos,J.A. Appel,D. Ashery,S. Banerjee,I. Bediaga,G. Blaylock,S.B. Bracker,P.R. Burchat,R.A. Burnstein,Tom Carter,H.S. Carvalho,N.K. Copty,L.M. Cremaldi,C. Darling,K. Denisenko,A. Fernandez,G.F. Fox,P. Gagnon,S. Gerzon,C. Gobel,K. Gounder,A.M. Halling,G. Herrera,G. Hurvits,C. James,P.A. Kasper,S. Kwan,D.C. Langs,J. Leslie,J. Lichtenstadt,B. Lundberg,S. MayTal-Beck,B.T. Meadows,Joao De Mello Neto,D. Mihalcea,R.H. Milburn,J.M. de Miranda,A. Napier,A. Nguyen,A.B. D'Oliveira,K. O'Shaughnessy,K.C. Peng,L.P. Perera,M.V. Purohit,B. Quinn,S. Radeztsky,A. Rafatian,N.W. Reay,J.J. Reidy,A.C. dos Reis,H.A. Rubin,D.A. Sanders,A.K.S. Santha,Alberto Santoro,A.J. Schwartz,M. Sheaff,R.A. Sidwell,A.J. Slaughter,M.D. Sokoloff,J. Solano,N.R. Stanton,R.J. Stefanski,K. Stenson,D.J. Summers,S. Takach,K. Thorne,A.K. Tripathi,S. Watanabe,R. Weiss-Babai,J. Wiener,N. Witchey,E. Wolin,S.M. Yang,D. Yi,S. Yoshida,R. Zaliznyak,C. Zhang;E.M. Aitala;S. Amato;J.C. Anjos;J.A. Appel;D. Ashery;S. Banerjee;I. Bediaga;G. Blaylock;S.B. Bracker;P.R. Burchat;R.A. Burnstein;Tom Carter;H.S. Carvalho;N.K. Copty;L.M. Cremaldi;C. Darling;K. Denisenko;A. Fernandez;G.F. Fox;P. Gagnon;S. Gerzon;C. Gobel;K. Gounder;A.M. Halling;G. Herrera;G. Hurvits;C. James;P.A. Kasper;S. Kwan;D.C. Langs;J. Leslie;J. Lichtenstadt;B. Lundberg;S. MayTal-Beck;B.T. Meadows;Joao De Mello Neto;D. Mihalcea;R.H. Milburn;J.M. de Miranda;A. Napier;A. Nguyen;A.B. D'Oliveira;K. O'Shaughnessy;K.C. Peng;L.P. Perera;M.V. Purohit;B. Quinn;S. Radeztsky;A. Rafatian;N.W. Reay;J.J. Reidy;A.C. dos Reis;H.A. Rubin;D.A. Sanders;A.K.S. Santha;Alberto Santoro;A.J. Schwartz;M. Sheaff;R.A. Sidwell;A.J. Slaughter;M.D. Sokoloff;J. Solano;N.R. Stanton;R.J. Stefanski;K. Stenson;D.J. Summers;S. Takach;K. Thorne;A.K. Tripathi;S. Watanabe;R. Weiss-Babai;J. Wiener;N. Witchey;E. Wolin;S.M. Yang;D. Yi;S. Yoshida;R. Zaliznyak;C. Zhang;
physics letters b 1999 Vol. 448 pp. 303-310
218
zhang1999physicssearch

Abstract

We have searched for evidence of the production and decay of a neutral bound-state pentaquark, one of a predicted doublet of states: P0c̄s=|c̄suud〉 and P−c̄s=|c̄sddu〉. Specifically, we have searched for the decay P0c̄s→K∗0K−p in data from Fermilab experiment E791, in which a 500 GeV/c π− beam interacted with nuclear targets. We find mass-dependent upper limits at the 90% confidence level for the ratio of cross section times branching fraction of this decay relative to that for the decay Ds−→K∗0K−. The upper limits vary between 0.016 and 0.036 for M(P0c̄s) between 2.75 and 2.91 GeV/c2, assuming a pentaquark lifetime of 0.4 ps.

Keywords

branching confidence neutral decay e791 pentaquark doublet suud p0c

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DOI:
10.1016/s0370-2693(99)00058-1
URL:
https://sciprofiles.com/publication/view/e5aa60b00...

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