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

E M Aitala,S Amato,J C Anjos,J A Appel,D Ashery,Sw Banerjee,I Bediaga,G Blaylock,S B Bracker,P R Burchat,R A Burnstein,T Carter,H S Carvalho,N Copty, L Cremaldi, C Darling,K Denisenko,A Fernandez,G F Fox,Pauline 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 R Leslie,J Lichtenstadt,B Lundberg, S Maytalbeck,B T Meadows,J R T De Mello Neto,D Mihalcea,R H Milburn,J M De Miranda,A Napier,A Nguyen,A B Doliveira,K Oshaughnessy,K C Peng,Lalith Perera,M V Purohit, Breese Quinn,S Radeztsky,A Rafatian,N W Reay,J Reidy,A C Dos Reis,H A Rubin, D A Sanders, A K S Santha,A 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 F Takach, K A Thorne,A K Tripathi,S Watanabe,R Weissbabai,J Wiener,N Witchey,E Wolin,S M Yang,D Yi,S Yoshida,R Zaliznyak,Changshui Zhang

PHYSICS LETTERS B（1999）

引用 31|浏览25

暂无评分

摘要

We have searched for evidence of the production and decay of a neutral bound-state pentaquark, one of a predicted doublet of states: P-(c over bar s)(0) = \(c) over bar suud] and P-(c over bar s)(-) = \(c) over bar sddu]. Specifically, we have searched for the decay P-(c over bar s)(0) --> K *K-0(-) p in data from Fermilab experiment E791, in which a 500 GeV/c pi(-) 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 D-s(-) --> K *K-0(-). The upper limits vary between 0.016 and 0.036 for M(P-(c over bar s)(0)) between 2.75 and 2.91 GeV/c(2), assuming a pentaquark lifetime of 0.4 ps. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

查看译文

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要