Prospects for pentaquark production at meson factories

  title={Prospects for pentaquark production at meson factories},
  author={T. Browder and I. Klebanov and D. Marlow},
  journal={Physics Letters B},
Abstract Following Rosner [ hep-ph/0312269 ], we consider B -decay production channels for the exotic I =0 and I =3/2 pentaquarks that have been recently reported. We also discuss new search channels for isovector pentaquarks, such as the Θ ∗++ ( s duuu) , that are generically present in chiral soliton models but were not observed in recent experiments. Furthermore, we argue that weak decays of charmed baryons, such as the Λ c + and Ξ c 0 , provide another clean way of detecting exotic baryons… Expand
15 Citations
Light-front approach for pentaquark strong decays
Assuming the two diquark structure for the pentaquark state as advocated in the Jaffe-Wilczek model, we study the strong decays of light and heavy parity-even pentaquark states using the light-frontExpand
Chiral-soliton predictions for exotic baryons
We re-analyze the predictions of chiral-soliton models for the masses and decay widths of baryons in the exotic antidecuplet of flavour SU(3). The calculated ranges of the chiral-soliton moment ofExpand
Pentaquarks: Facts and puzzles
AbstractOn the occasion of the celebration of the 70th birthday of Prof. Yu.A. Simonov, we contribute a brief review of the status of exotic baryons, which are most likely pentaquark states. WeExpand
Anticharmed pentaquark Θc(3099) from QCD sum rules
Abstract We construct QCD sum rules for the anti-charmed pentaquark Θ c (3099), recently reported at HERA. The sum rules are constructed similarly with the Θ + (1540) sum rules using the anti-charmedExpand
Prospects for pentaquark searches in e+e- annihilations and γγ collisions
Recent strong experimental evidence of a narrow exotic S = +1 baryon resonance, {Theta}{sup +}, suggests the existence of other exotic baryons. We discuss the prospects of confirming earlierExpand
Coalescence model for Theta(c) pentaquark formation.
We present a model for the formation of the charmed pentaquark Θc in hard scattering processes such as deep inelastic scattering, e+e− annihilation, and high-energy p collisions. The model assumesExpand
Pentaquark Θ+(1540)Θ+(1540) production in γN→KK¯N reactions
Recent developments in the search of exotic pentaquark hadrons are briefly reviewed. We then focus on investigating how the exotic pentaquark Θ(1540)Θ(1540) baryon production can be identified in theExpand
QCD sum rules for the anticharmed pentaquark
We present a QCD sum rule analysis for the anticharmed pentaquark state with and without strangeness. While the sum rules for most of the currents are either nonconvergent or dominated by the DNExpand
Exotic states of matter in heavy meson decays
The potential of decays of mesons containing heavy quarks [including B mesons and the $\ensuremath{\Upsilon}(1S)]$ for producing final states of matter with unusual quark configurations, such asExpand
Hadronic decays involving heavy pentaquarks
Recently several experiments have reported evidences for pentaquark $\Theta^+$. H1 experiment at HERA-B has also reported evidence for $\Theta_c$. $\Theta^+$ is interpreted as a bound state of anExpand


Search for the pentaquark via the P0c̄s→K∗0K−p decay
Abstract We have searched for evidence of the production and decay of a neutral bound-state pentaquark, one of a predicted doublet of states: P 0 c s =| c suud〉 and P − c s =| c sddu〉 . Specifically,Expand
Production of Θ⁺(1540) and Ξ pentaquark states in proton-proton interactions
Abstract The production of strange pentaquark states (e.g., Theta baryons and Ξ−− states) in hadronic interactions within a Gribov–Regge approach is explored. In this approach the Θ+(1540) and the ΞExpand
Observation of an exotic baryon with S=+1 in photoproduction from the proton.
The reaction gamma p-->pi(+)K(-)K(+)n was studied at Jefferson Laboratory using a tagged photon beam with an energy range of 3-5.47 GeV. A narrow baryon state with strangeness S=+1 and massExpand
The anticharmed exotic baryon Θ c and its relatives
Motivated by the recent discovery of the exotic S = +1 narrow baryon resonance Θ+ at 1540 MeV, with quark content uud ds̄, we conjecture the existence of its anti-charmed analogue Θcwith quarkExpand
Evidence for a narrow S = +1 baryon resonance in photoproduction from the neutron.
The gamman-->K(+)K(-)n reaction on 12C has been studied by measuring both K+ and K- at forward angles and a sharp baryon resonance peak was observed, consistent with an antidecuplet of baryons predicted by the chiral soliton model. Expand
Pentaquark hadrons from lattice QCD
We study spin 1/2 isoscalar and isovector candidates in both parity channels for the recently discovered ?+ (1540) pentaquark particle in quenched lattice QCD. Our analysis takes into account allExpand
The Constituent quark model revisited: Quark masses, new predictions for hadron masses and KN pentaquark
Prompted by the recent surprising results in QCD spectroscopy, we extend to heavy flavors the hadron mass relations showing that the constituent quark mass differences and ratios have the same valuesExpand
Probing the partonic structure of pentaquarks in hard electroproduction
Abstract Exclusive electroproduction of a K or K ∗ meson on the nucleon can give a Θ+ pentaquark in the final state. This reaction offers an opportunity to investigate the structure of pentaquarkExpand
Evidence for a narrow |S |= 1 baryon state at a mass of 1528 MeV in quasi-real photoproduction
Abstract Evidence for a narrow baryon state is found in quasi-real photoproduction on a deuterium target through the decay channel pK0S→pπ+π−. A peak is observed in the pK0S  invariant mass spectrumExpand
Radial excitations of low–lying baryons and the Z+ penta–quark
Abstact: Within an extended Skyrme soliton model for baryons the interplay between the collective radial motion and the SU(3)–flavor–rotations is investigated. The coupling between these modes isExpand