Search for a narrow baryonic state decaying to pKS 0 and pKS 0 in deep inelastic scattering at HERA

ZEUS Collaboration

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

A search for a narrow baryonic state in the pKS 0 and pKS 0 system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358pb-1 taken in 2003-2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318GeV for exchanged photon virtuality, Q2, between 20 and 100GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb-1 taken in 1996-2000, no resonance peak was found in the p(p)KS 0 invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

Lingua originaleInglese
pagine (da-a)446-453
Numero di pagine8
RivistaPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume759
DOI
Stato di pubblicazionePubblicato - 10 ago 2016

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