Search for a narrow baryonic state decaying to ${pK^0_S}$ and ${\bar{p}K^0_S}$ in deep inelastic scattering at HERA
Creators: name: ZEUS Collaboration
name: Abramowicz, H.
name: Abt, I.
name: Adamczyk, L.
name: Adamus, M.
name: Antonelli, S.
name: Aushev, V.
name: Behnke, O.
name: Behrens, U.
name: Bertolin, A.
name: Bhadra, S.
name: Bloch, I.
name: Boos, E. G.
name: Brock, I.
name: Brook, N. H.
name: Brugnera, R.
name: Bruni, A.
name: Bussey, P. J.
name: Caldwell, A.
name: Capua, M.
name: Catterall, C. D.
name: Chwastowski, J.
name: Ciborowski, J.
name: Ciesielski, R.
name: Cooper-Sarkar, A. M.
name: Corradi, M.
name: Dementiev, R. K.
name: Devenish, R. C. E.
name: Dusini, S.
name: Foster, B.
name: Gach, G.
name: Gallo, E.
name: Garfagnini, A.
name: Geiser, A.
name: Gizhko, A.
name: Gladilin, L. K.
name: Golubkov, Yu. A.
name: Grzelak, G.
name: Guzik, M.
name: Gwenlan, C.
name: Hain, W.
name: Hlushchenko, O.
name: Hochman, D.
name: Hori, R.
name: Ibrahim, Z. A.
name: Iga, Y.
name: Ishitsuka, M.
name: Januschek, F.
name: Jomhari, N. Z.
name: Kadenko, I.
name: Kananov, S.
name: Karshon, U.
name: Kaur, P.
name: Kisielewska, D.
name: Klanner, R.
name: Klein, U.
name: Korzhavina, I. A.
name: Kotanski, A.
name: Koetz, U.
name: Kovalchuk, N.
name: Kowalski, H.
name: Krupa, B.
name: Kuprash, O.
name: Kuze, M.
name: Levchenko, B. B.
name: Levy, A.
name: Limentani, S.
name: Lisovyi, M.
name: Lobodzinska, E.
name: Loehr, B.
name: Lohrmann, E.
name: Longhin, A.
name: Lontkovskyi, D.
name: Lukina, O. Yu.
name: Makarenko, I.
name: Malka, J.
name: Mastroberardino, A.
name: Idris, F. Mohamad
name: Nasir, N. Mohammad
name: Myronenko, V.
name: Nagano, K.
name: Nobe, T.
name: Nowak, R. J.
name: Onishchuk, Yu.
name: Paul, E.
name: Perlanski, W.
name: Pokrovskiy, N. S.
name: Polini, A.
name: Przybycien, M.
name: Roloff, P.
name: Ruspa, M.
name: Saxon, D. H.
name: Schioppa, M.
name: Schneekloth, U.
name: Schoerner-Sadenius, T.
name: Shcheglova, L. M.
name: Shevchenko, R.
name: Shkola, O.
name: Shyrma, Yu.
name: Singh, I.
name: Skillicorn, I. O.
name: Slominski, W.
name: Solano, A.
name: Stanco, L.
name: Stefaniuk, N.
name: Stern, A.
name: Stopa, P.
name: Sztuk-Dambietz, J.
name: Tassi, E.
name: Tokushuku, K.
name: Tomaszewska, J.
name: Tsurugai, T.
name: Turcato, M.
name: Turkot, O.
name: Tymieniecka, T.
name: Verbytskyi, A.
name: Abdullah, W. A. T. Wan
name: Wichmann, K.
name: Wing, M.
name: Yamada, S.
name: Yamazaki, Y.
name: Zakharchuk, N.
name: Zarnecki, A. F.
name: Zawiejski, L.
name: Zenaiev, O.
name: Zhautykov, B. O.
name: Zotkin, D. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: A search for a narrow baryonic state in the $pK^0_S$ and $\bar{p}K^0_S$ system has been performed in $ep$ collisions at HERA with the ZEUS detector using an integrated luminosity of 358 pb$^{-1}$ taken in 2003-2007. The search was performed with deep inelastic scattering events at an $ep$ centre-of-mass energy of 318 GeV for exchanged photon virtuality, $Q^2$, between 20 and 100 $\rm{} GeV^{2}$. 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 $p(\bar{p})K^0_S$ invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.
description: 16 pages, 4 figures, accepted by Phys. Lett. B. Minor changes from journal reviewing process, including a small correction to figure 4