Search for the Phi(1860) Pentaquark at COMPASS

Abstract

Narrow Xi-pi+- and Xi-bar+pi+- resonances produced by quasi-real photons have been searched for by the COMPASS experiment at CERN. The study was stimulated by the recent observation of an exotic baryonic state decaying into Xi-pi-, at a mass of 1862 MeV, interpreted as a pentaquark. While the ordinary hyperon states Xi(1530)^0 and Xi-bar(1530)^0 are clearly seen, no exotic baryon is observed in the data taken in 2002 and 2003.

arXiv comment10 pages, 5 figures

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Observation of an Exotic S = -2, Q = -2 Baryon Resonance in Proton-Proton Collisions at the CERN SPS
• Limits for the central production of Theta^+ and Xi^{--} pentaquarks in 920 GeV pA collisions
• Search for the exotic ${\Xi }^{--}(1860)$ Resonance in 340GeV/c ${\Sigma }^{-}$-Nucleus Interactions
• Search for an exotic S=-2, Q=-2 baryon resonance at a mass near 1862 MeV in quasi-real photoproduction
• CKM Results From CLEO

Cited by in corpus (16)

• The COMPASS Experiment at CERN
• Discovering New Light States at Neutrino Experiments
• Production of $\Sigma (1385{)}^{\pm }$ and $\Xi (1530{)}^0$ in proton-proton collisions at $\sqrt{s}=$ 7 TeV
• Search for the ${\Theta }^{+}$ pentaquark in the reactions $\gamma p\to {\bar{K}}^0{K}^{+}n$ and $\gamma p\to {\bar{K}}^0{K}^{0}p$
• Photoproduction of Xi off nucleons
• Search for the Theta+ pentaquark in the gamma d -> Lambda n K+ reaction measured with CLAS
• Have Pentaquark States Been seen?
• Present status on experimental search for pentaquarks
• Search for a pentaquark decaying to p K_S^0
• Search for Exotic Baryons in 800 GeV pp (rtarrow) pXiPiX
• Study of Σ(1385) and Ξ(1321) hyperon and antihyperon production in deep inelastic muon scattering
• Search for Baryonic Resonances Decaying to Xi pi in Deep-Inelastic Scattering at HERA
• Search for a pentaquark decaying to Cascade- pi-
• Search for Exotic S=-2 Baryons in proton-antiproton Collisions at sqrt(s) = 1.96 TeV
• Upper limits for the photoproduction cross section for the Phi--(1860) pentaquark state off the deuteron
• QCD Theory at the XL Rencontre de Moriond: Fish Eyes and Physics