Microcanonical pentaquark production ine+e−annihilations
نویسندگان
چکیده
منابع مشابه
Isospin Analysis of pentaquark production
Significant signal-background interference effects can occur in experiments like γN → K̄Θ which search for the Θ as a narrow I = 0 resonance in a definite final state against a nonresonant background, with an experimental resolution coarser than the expected resonance width. We show that when the signal and background have roughly the same magnitude, destructive interference can easily combine w...
متن کاملPentaquark Baryon Production in Nuclear Reactions
Using a hadronic model with empirical coupling constants and form factors, we have evaluated the cross sections for the production of exotic pentaquark Θ and/or Ξ 5 and Ξ−− 5 in reactions induced by photons, nucleons, pions, and kaons on nucleon targets. We have also predicted the Θ yield in relativistic heavy ion collisions using a kinetic model that takes into account both Θ production from t...
متن کاملPentaquark Θ(1540) production in γN → KKN Reactions
Abstract The recent developments in the search of exotic pentaquark hadrons are briefly reviewed. We then focus on investigating how the exotic pentaquark Θ(1540) baryon production can be identified in the γN → KKN reactions, focusing on the influence of the background (non-Θ production) mechanisms. By imposing the SU(3) symmetry and using various quark model predictions, we are able to fix the...
متن کاملPentaquark U+ production from the reaction gp\p+K−U+
The cross section for U+ production from the reaction gp→p+K−U+, which was observed in the CLAS experiment at the Jefferson National Laboratory, is evaluated in a hadronic model that includes couplings of U+ to both KN and K*N. With their coupling constants determined from the empirical pNNs1710d and rNNs1710d coupling constants using the SU(3) symmetry, the cross section for this reaction has ...
متن کاملPentaquark Baryons in String Theory -talk at Pentaquark 04-
Pentaquark baryons Θ and Ξ−− are studied in the dual gravity theory of QCD in which simple mass formulae of pentaquarks are derived in the Maldacena prototype model for supersymmetric QCD and a more realistic model for ordinary QCD. In this approach it is possible to explain the extremely narrow decay widths of pentaquarks. With the aim of constructing more reliable mass formulae, a sketch is g...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.74.034024