Search for a narrow baryonic state decaying to pK(S)(0) and (p)over-barK(S)(0) in deep inelastic scattering at HERA

Abramowicz, H, Abt, I, Adamczyk, L, Adamus, M, Antonelli, S, Aushev, V, Behnke, O, Behrens, U, Bertolin, A, Bhadra, S
et al (show 115 more authors) (2016) Search for a narrow baryonic state decaying to pK(S)(0) and (p)over-barK(S)(0) in deep inelastic scattering at HERA. PHYSICS LETTERS B, 759. pp. 446-453.

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Abstract

A search for a narrow baryonic state in the pKS0 and pKS0 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)KS0 invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

Item Type: Article Symplectic Admin 27 Jan 2017 15:40 19 Jan 2023 07:20 10.1016/j.physletb.2016.06.001 https://arxiv.org/abs/1604.02220 https://livrepository.liverpool.ac.uk/id/eprint/3005424