Search for a narrow baryonic state decaying to \({pK^0_S}\) and \({\bar{p}K^0_S}\) in deep inelastic scattering at HERA

Search for a narrow baryonic state decaying to \({pK^0_S}\) and \({\bar{p}K^0_S}\) in deep inelastic scattering at HERA

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 \(ep\)...

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Veröffentlicht in:arXiv.org 2016-06
Hauptverfasser: Abt, I, Adamczyk, L, Adamus, M, Antonelli, S, Aushev, V, Behrens, U, Bhadra, S, Brock, I, Bruni, A, Bussey, P J, Caldwell, A, Catterall, C D, Chwastowski, J, Ciborowski, J, Ciesielski, R, Cooper-Sarkar, A M, Corradi, M, Dementiev, R K, Devenish, R C E, Dusini, S, Foster, B, Gach, G, Garfagnini, A, Geiser, A, Gizhko, A, Gladilin, L K, Golubkov, Yu A, Grzelak, G, Guzik, M, Gwenlan, C, Hain, W, Hlushchenko, O, Hochman, D, Hori, R, Ibrahim, Z A, Iga, Y, Ishitsuka, M, Januschek, F, Kananov, S, Karshon, U, Kaur, P, Kisielewska, D, Klanner, R, Klein, U, Korzhavina, I A, Kotanski, A, Kovalchuk, N, Krupa, B, Kuprash, O, Kuze, M, Levchenko, B B, Lisovyi, M, Lobodzinska, E, Loehr, B, Lohrmann, E, Longhin, A, Lontkovskyi, D, O Yu Lukina, Makarenko, I, Mastroberardino, A, N Mohammad Nasir, Nobe, T, Nowak, R J, Paul, E, Perlanski, W, Pokrovskiy, N S, Polini, A, Przybycien, M, Roloff, P, Ruspa, M, Schioppa, M, Schneekloth, U, Schoerner-Sadenius, T, Shcheglova, L M, Shkola, O, Yu Shyrma, Singh, I, Skillicorn, I O, Slominski, W, Solano, A, Stanco, L, Stefaniuk, N, Stern, A, Stopa, P, Sztuk-Dambietz, J, Tassi, E, Tokushuku, K, Tomaszewska, J, Tsurugai, T, Turcato, M, Turkot, O, Verbytskyi, A, Wichmann, K, Wing, M, Yamada, S, Yamazaki, Y, Zakharchuk, N, Zarnecki, A F, Zenaiev, O, Zotkin, D S
Format: Artikel
Sprache:eng
Schlagworte:
Baryons
Inelastic scattering
Luminosity
Mass distribution
Searching
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Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1604.02220