Phenomenology of the pentaquark antidecuplet
نویسندگان
چکیده
منابع مشابه
Dynamical Study of the Pentaquark Antidecuplet
Dynamical calculations are performed for all isomultiplets of the flavour antidecuplet to which the newly discovered pentaquark Θ + belongs. The framework is a constituent quark model where the short-range interaction has a flavour-spin structure. In this model the lightest pentaquarks are parity even states. They are described by variational solutions where the Pauli principle is properly take...
متن کاملDynamical Study of the Pentaquark Antidecuplet in a Constituent Quark Model
Dynamical calculations are performed for all members of the flavor antidecuplet to which the pentaquark Θ belongs. The framework is a constituent quark model where the short-range interaction has a flavor-spin structure. From symmetry considerations the lowest state acquires a positive parity. By fitting the mass of Θ of minimal content uudds, the mass of Ξ−−, of minimal content ddssu, is predi...
متن کاملMagnetic moments of antidecuplet pentaquarks
We analyze the magnetic moments of the exotic pentaquarks of the flavor antidecuplet in the constituent quark model for the case in which the ground state is in an orbital L = 0 or a L = 1− state. We derive sum rules for the magnetic moments. The magnetic moment of the Θ(1540) is found to be 0.38, 0.09 and 1.05 μN for J p = 1/2−, 1/2 and 3/2, respectively, which is compared with the results obt...
متن کاملOn photoexcitation of baryon antidecuplet
We show that the photoexcitation of the baryon antidecuplet, suggested by the soliton classification of low-lying baryons, is strongly suppressed on the proton target. The process occurs mostly on the neutron target. This qualitative prediction can be useful in identifying the non-exotic members of the antidecuplet in the known baryon spectrum. We also analyze the interrelation between photocou...
متن کاملMasses and magnetic moments of pentaquarks
We discuss the spectroscopy of the recently discovered exotic baryons as pentaquark qq̄ configurations. The ground state pentaquark configuration depends on the interplay between spin-flavor and orbital contributions to the mass operator. A simple calculation in an algebraic model gives a ground state antidecuplet pentaquark with isospin I = 0 and negative parity. The lowest pentaquark with posi...
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: Physics Letters B
سال: 2003
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2003.08.050