Results of resonance searches in the Xi- pi-, Xi- pi+, antiXi+ pi- and antiXi+ pi+ invariant mass spectra in proton-proton collisions at sqrt{s}=17.2 GeV are presented. Evidence is shown for the existence of a narrow Xi- pi- baryon resonance with mass of 1.862+/-0.002 GeV/c^2 and width below the detector resolution of about 0.018 GeV/c^2. The significance is estimated to be 4.0 sigma. This state is a candidate for the hypothetical exotic Xi_(3/2)^-- baryon with S = -2, I = 3/2 and a quark content of (d s d s ubar). At the same mass a peak is observed in the Xi- pi+ spectrum which is a candidate for the Xi_(3/2)^0 member of this isospin quartet with a quark content of (d s u s dbar). The corresponding antibaryon spectra also show enhancement...
10 pages, 5 figures, Submitted to Phys. Rev. DA search for a manifestly exotic S=-2 baryon state dec...
A search for an exotic baryon resonance with S=-2, Q=-2 has been performed in quasireal photoproduct...
Two structures are observed close to the kinematic threshold in the Xi(0)(b)pi(-) mass spectrum in a...
Results of resonance searches in the Xi- pi-, Xi- pi+, antiXi+ pi- and antiXi+ pi+ invariant mass sp...
Results of resonance searches in the Xi - pi -, Xi - pi +, Xi -bar+ pi -, and Xi -bar+ pi + invarian...
Pentaquark states have been extensively investigated theoretically in the context of the constituent...
Pentaquark states have been extensively investigated theoretically in the context of the constituent...
Results of resonance searches in the Xi- pi-, Xi- pi+, antiXi+ pi- and antiXi+ pi+ invariant mass sp...
Pentaquark states have been extensively investigated theoretically in the context of the constituent...
A search for baryon resonance states with exotic quantum numbers was performed in p+p interactions a...
A search for a manifestly exotic S=-2 baryon state decaying to Xi- pi-, and its neutral partner deca...
A search for a manifestly exotic S = -2 baryon state decaying to {Xi}{sup -}{pi}{sup -}, and its neu...
International audiencePentaquark states have been extensively investigated theoretically in the cont...
A search for an exotic baryon resonance with S=-2, Q=-2 has been performed in quasireal photoproduct...
A search for a manifestly exotic S = -2 baryon state decaying to Xi(-) pi(-), and its neutral partne...
10 pages, 5 figures, Submitted to Phys. Rev. DA search for a manifestly exotic S=-2 baryon state dec...
A search for an exotic baryon resonance with S=-2, Q=-2 has been performed in quasireal photoproduct...
Two structures are observed close to the kinematic threshold in the Xi(0)(b)pi(-) mass spectrum in a...
Results of resonance searches in the Xi- pi-, Xi- pi+, antiXi+ pi- and antiXi+ pi+ invariant mass sp...
Results of resonance searches in the Xi - pi -, Xi - pi +, Xi -bar+ pi -, and Xi -bar+ pi + invarian...
Pentaquark states have been extensively investigated theoretically in the context of the constituent...
Pentaquark states have been extensively investigated theoretically in the context of the constituent...
Results of resonance searches in the Xi- pi-, Xi- pi+, antiXi+ pi- and antiXi+ pi+ invariant mass sp...
Pentaquark states have been extensively investigated theoretically in the context of the constituent...
A search for baryon resonance states with exotic quantum numbers was performed in p+p interactions a...
A search for a manifestly exotic S=-2 baryon state decaying to Xi- pi-, and its neutral partner deca...
A search for a manifestly exotic S = -2 baryon state decaying to {Xi}{sup -}{pi}{sup -}, and its neu...
International audiencePentaquark states have been extensively investigated theoretically in the cont...
A search for an exotic baryon resonance with S=-2, Q=-2 has been performed in quasireal photoproduct...
A search for a manifestly exotic S = -2 baryon state decaying to Xi(-) pi(-), and its neutral partne...
10 pages, 5 figures, Submitted to Phys. Rev. DA search for a manifestly exotic S=-2 baryon state dec...
A search for an exotic baryon resonance with S=-2, Q=-2 has been performed in quasireal photoproduct...
Two structures are observed close to the kinematic threshold in the Xi(0)(b)pi(-) mass spectrum in a...