CERN Accelerating science

Article
Report number DESY-16-065 ; arXiv:1604.02220 ; DESY-16-065
Title Search for a narrow baryonic state decaying to ${pK^0_S}$ and ${\overline{p}K^0_S}$ in deep inelastic scattering at HERA
Author(s)

Abramowicz, H. (Tel Aviv U. ; Munich, Max Planck Inst.) ; Abt, I. (Munich, Max Planck Inst.) ; Adamczyk, L. (AGH-UST, Cracow) ; Adamus, M. (NCBJ, Swierk) ; Antonelli, S. (INFN, Bologna ; Bologna U.) ; Aushev, V. (Taras Shevchenko U.) ; Behnke, O. (DESY) ; Behrens, U. (DESY) ; Bertolin, A. (INFN, Padua) ; Bhadra, S. (York U., Canada) ; Bloch, I. (DESY, Zeuthen) ; Boos, E.G. (IPT, Kazakstan) ; Brock, I. (Bonn U.) ; Brook, N.H. (University Coll. London) ; Brugnera, R. (INFN, Padua ; Padua U.) ; Bruni, A. (INFN, Bologna) ; Bussey, P.J. (Glasgow U.) ; Caldwell, A. (Munich, Max Planck Inst.) ; Capua, M. (INFN, Cosenza ; Calabria U.) ; Catterall, C.D. (York U., Canada) ; Chwastowski, J. (Cracow, INP) ; Ciborowski, J. (Warsaw U. ; Lodz U.) ; Ciesielski, R. (DESY ; Rockefeller U.) ; Cooper-Sarkar, A.M. (Oxford U.) ; Corradi, M. (INFN, Bologna ; INFN, Rome) ; Dementiev, R.K. (Moscow State U.) ; Devenish, RCE (Oxford U.) ; Dusini, S. (INFN, Padua) ; Foster, B. (Hamburg U. ; DESY ; Oxford U.) ; Gach, G (AGH-UST, Cracow) ; Gallo, E. (Hamburg U. ; DESY) ; Garfagnini, A. (INFN, Padua ; Padua U.) ; Geiser, A. (DESY) ; Gizhko, A. (DESY) ; Gladilin, L.K. (Moscow State U.) ; Golubkov, Yu.A. (Moscow State U.) ; Grzelak, G. (Warsaw U.) ; Guzik, M. (AGH-UST, Cracow) ; Gwenlan, C. (Oxford U.) ; Hain, W. (DESY) ; Hlushchenko, O. (Taras Shevchenko U.) ; Hochman, D. (Weizmann Inst.) ; Hori, R. (KEK, Tsukuba) ; Ibrahim, Z.A. (Malaya U.) ; Iga, Y. (Tokyo Inst. Polytech.) ; Ishitsuka, M. (Tokyo Inst. Tech.) ; Januschek, F. (DESY ; European XFEL, Hamburg) ; Jomhari, N.Z. (Malaya U.) ; Kadenko, I. (Taras Shevchenko U.) ; Kananov, S. (Tel Aviv U.) ; Karshon, U. (Weizmann Inst.) ; Kaur, P. (Panjab U. ; SLIET, Longowal) ; Kisielewska, D. (AGH-UST, Cracow) ; Klanner, R. (Hamburg U.) ; Klein, U. (DESY ; Liverpool U.) ; Korzhavina, I.A. (Moscow State U.) ; Kotański, A. (Jagiellonian U.) ; Kötz, U. (DESY) ; Kovalchuk, N. (Hamburg U.) ; Kowalski, H. (DESY) ; Krupa, B. (Cracow, INP) ; Kuprash, O. (DESY ; Tel Aviv U.) ; Kuze, M (Tokyo Inst. Tech.) ; Levchenko, B.B. (Moscow State U.) ; Levy, A. (Tel Aviv U.) ; Limentani, S. (INFN, Padua ; Padua U.) ; Lisovyi, M. (DESY ; Heidelberg U.) ; Lobodzinska, E. (DESY) ; Löhr, B. (DESY) ; Lohrmann, E. (Hamburg U.) ; Longhin, A. (INFN, Padua ; Frascati) ; Lontkovskyi, D. (DESY) ; Lukina, O.Yu. (Moscow State U.) ; Makarenko, I. (DESY) ; Malka, J. (DESY) ; Mastroberardino, A. (Calabria U. ; INFN, Cosenza) ; Mohamad Idris, F. (MOSTI, Malaysian Nucl. Agency, Kajang ; Malaya U.) ; Mohammad Nasir, N (Malaya U.) ; Myronenko, V. (DESY) ; Nagano, K. (KEK, Tsukuba) ; Nobe, T. (Tokyo Inst. Tech.) ; Nowak, R.J. (Warsaw U.) ; Onishchuk, Yu. (Taras Shevchenko U.) ; Paul, E. (Bonn U.) ; Perlański, W. (Warsaw U. ; Lodz U.) ; Pokrovskiy, N.S. (IPT, Kazakstan) ; Polini, A. (INFN, Bologna) ; Przybycien, M. (AGH-UST, Cracow) ; Roloff, P. (DESY ; CERN) ; Ruspa, M. (INFN, Turin ; Piemonte Orientale U., Novara) ; Saxon, D.H. (Glasgow U.) ; Schioppa, M. (INFN, Cosenza ; Calabria U.) ; Schneekloth, U. (DESY) ; Schörner-Sadenius, T. (DESY) ; Shcheglova, L.M. (Moscow State U.) ; Shevchenko, R. (Taras Shevchenko U. ; Kiev Polytechnic Inst. ; DESY) ; Shkola, O. (Taras Shevchenko U.) ; Shyrma, Yu. (Kiev, INR) ; Singh, I. (Panjab U.) ; Skillicorn, I.O. (Glasgow U.) ; Słomiński, W. (Jagiellonian U.) ; Solano, A. (Turin U. ; INFN, Turin) ; Stanco, L. (INFN, Padua) ; Stefaniuk, N. (DESY) ; Stern, A. (Tel Aviv U.) ; Stopa, P. (Cracow, INP) ; Sztuk-Dambietz, J. (Hamburg U. ; European XFEL, Hamburg) ; Tassi, E. (INFN, Cosenza ; Calabria U.) ; Tokushuku, K. (KEK, Tsukuba ; Tokyo U.) ; Tomaszewska, J. (Warsaw U.) ; Tsurugai, T. (Meiji Gakuin U.) ; Turcato, M. (Hamburg U. ; European XFEL, Hamburg) ; Turkot, O. (DESY) ; Tymieniecka, T. (NCBJ, Swierk) ; Verbytskyi, A. (Munich, Max Planck Inst.) ; Wan Abdullah, W.A.T. (Malaya U.) ; Wichmann, K. (DESY) ; Wing, M. (University Coll. London) ; Yamada, S. (KEK, Tsukuba) ; Yamazaki, Y. (KEK, Tsukuba ; Kobe U.) ; Zakharchuk, N. (Taras Shevchenko U. ; DESY) ; Żarnecki, A.F. (Warsaw U.) ; Zawiejski, L. (Cracow, INP) ; Zenaiev, O. (DESY) ; Zhautykov, B.O. (IPT, Kazakstan) ; Zotkin, D.S. (Moscow State U.) ; Mastroberardino, A (Calabria U. ; INFN, Cosenza)

Publication 2016-08-10
Imprint 07 Apr 2016
Number of pages 8
Note Comments: 16 pages, 4 figures, submitted to Phys. Lett. B
16 pages, 4 figures, accepted by Phys. Lett. B. Minor changes from journal reviewing process, including a small correction to figure 4
In: Phys. Lett. B 759 (2016) 446-453
DOI 10.1016/j.physletb.2016.06.001
Subject category Particle Physics - Experiment
Abstract A search for a narrow baryonic state in the $pK^0_S$ and $\overline{p}K^0_S$ 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 $p(\overline{p})K^0_S$ invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.
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publication: © 2016-2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³



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