Stable Heavy Pentaquark States

Abstract

If the Theta^+(1540) is interpreted as a bound state of a $\bar{s}$ quark and two (ud) diquarks in a relative P-wave, then it is very likely that there exist pentaquark states with a heavy antiquark, $\bar{b}$ or $\bar{c}$, and two ``light'' diquarks in a relative S-wave which are stable against strong decays. We make a mass estimate for exotic states of this type and discuss their weak decays. Isospin relations are constructed which test their flavor quantum numbers.

arXiv comment8 pages

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• D-wave baryon resonances with charm from coupled-channel dynamics
• Heavy Antiquark--Diquark Symmetry and Heavy Hadron Molecules: Are There Triply Heavy Pentaquarks?
• Light-Front Approach for Heavy Pentaquark Transitions
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Pentaquark baryons in SU(3) quark model
• Color Non-Singlet Spectroscopy
• On the Existence of Heavy Pentaquarks: The large Nc and Heavy Quark Limits and Beyond
• Search for a strongly decaying neutral charmed pentaquark
• 1/N Expansion for Exotic Baryons
• The X(3872) Meson and "Exotic" Spectroscopy at CDF II
• QCD sum rules for the anti-charmed pentaquark
• Negative-Parity Heavy Pentaquark States in 1/N_c
• Manifestly exotic pentaquarks with a single heavy quark
• Negative parity pentaquarks in large Nc QCD and quark model
• Light-Front Approach for Pentaquark Strong Decays
• A search for weakly decaying b-flavored pentaquarks
• Anti-charmed pentaquark from B decays
• Heavy Quark Analogues of the Theta and Their Excitations
• The Production of Singly Charmed Pentaquark $\bar{c}qqqq$ from Bottom Baryon
• Heavy and Light Pentaquark Chiral Lagrangian
• Heavy baryons in the Skyrme model: the role of highly anharmonic collective motion
• Masses and Magnetic Moments of Singly Heavy Pentaquarks
• Stable Pentaquarks from Strange Chiral Multiplets
• Positive parity pentaquark towers in large Nc QCD
• Heavy Pentaquarks in the Diquark Model and the Large N_c Expansion