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تسجيل مستخدم جديدSearch for an exotic S=-2, Q=-2 baryon resonance in proton-proton interactions at $sqrt{s_{NN}}$ = 17.3 GeV
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Pentaquark states have been extensively investigated theoretically in the context of the constituent quark model. In this paper results of an experimental search for pentaquarks in the Ximpim, Ximpip, Xippim and Xippip invariant mass spectra in proton-proton interactions at $sqrt{s}$=17.3~GeV are presented. Previous possible evidence from the NA49 collaboration of the existence of a narrow Ximpim baryon resonance in p+p interactions is not confirmed with almost 10 times greater event statistics. The search was performed using the NASixtyOne detector which reuses the main components of the NA49 apparatus. No signal was observed with either the selection cuts of NA49 or newly optimised cuts.
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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 mas
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