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A search for a narrow baryonic state in the pK^0_S and pbarK^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, Q2, between 20 and 100 GeV2. 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)K^0_S invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

Search for a narrow baryonic state decaying to pK^0_S and pbarK^0_S 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.;Bloch I.;Boos E. G.;Brock I.;Brook N. H.;Brugnera R.;Bruni A.;Bussey P. J.;Caldwell A.;Capua M.;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.;Gallo E.;Garfagnini A.;Geiser A.;Gizhko A.;Gladilin L. K.;Golubkov Y.;Grzelak G.;Guzik M.;Gwenlan C.;Hain W.;Hlushchenko O.;Hochman D.;Hori R.;Ibrahim Z. A.;Iga Y.;Ishitsuka M.;Januschek F.;Jomhari N. Z.;Kadenko I.;Kananov S.;Karshon U.;Kaur P.;Kisielewska D.;Klanner R.;Klein U.;Korzhavina I. A.;Kotanski A.;Kotz U.;Kovalchuk N.;Kowalski H.;Krupa B.;Kuprash O.;Kuze M.;Levchenko B. B.;Levy A.;Limentani S.;Lisovyi M.;Lobodzinska E.;Lohr B.;Lohrmann E.;Longhin A.;Lontkovskyi D.;Lukina O.;Makarenko I.;Malka J.;Mastroberardino A.;Mohamad Idris F.;Mohammad Nasir N.;Myronenko V.;Nagano K.;Nobe T.;Nowak R. J.;Onishchuk Y.;Paul E.;Perlanski W.;Pokrovskiy N. S.;Polini A.;Przybycien M.;Roloff P.;Ruspa M.;Saxon D. H.;Schioppa M.;Schneekloth U.;Schorner-Sadenius T.;Shcheglova L. M.;Shevchenko R.;Shkola O.;Shyrma Y.;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.;Tymieniecka T.;Verbytskyi A.;Wan Abdullah W. A. T.;Wichmann K.;Wing M.;Yamada S.;Yamazaki Y.;Zakharchuk N.;Zarnecki A. F.;Zawiejski L.;Zenaiev O.;Zhautykov B. O.;Zotkin D. S.

2016-01-01

Abstract

A search for a narrow baryonic state in the pK^0_S and pbarK^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, Q2, between 20 and 100 GeV2. 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)K^0_S invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

Scheda breve

Scheda completa

Scheda completa (DC)

	Anno
	
			2016
		
	Titolo rivista
	
			PHYSICS LETTERS. SECTION B
		
	N. Volume
	
			759
		
	Pagine (da)
	
			446
		
	Pagine (a)
	
			453
		
	DOI
	
			https://dx.doi.org/10.1016/j.physletb.2016.06.001
		
	URL del prodotto (archivi open access, fulltext su sito editore, etc.)
	
			http://dx.doi.org/10.1016/j.physletb.2016.06.001
		
	Parole Chiave
	
			HERA, ZEUS, Deep inelastic scattering
		
	Tutti gli autori
	
			Abramowicz H.; Abt I.; Adamczyk L.; Adamus M.; Antonelli S.; Aushev V.; Behnke O.; Behrens U.; Bertolin A.; Bhadra S.; Bloch I.; Boos E.G.; Brock I.; Brook N.H.; Brugnera R.; Bruni A.; Bussey P.J.; Caldwell A.; Capua M.; 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.; Gallo E.; Garfagnini A.; Geiser A.; Gizhko A.; Gladilin L.K.; Golubkov Y.; Grzelak G.; Guzik M.; Gwenlan C.; Hain W.; Hlushchenko O.; Hochman D.; Hori R.; Ibrahim Z.A.; Iga Y.; Ishitsuka M.; Januschek F.; Jomhari N.Z.; Kadenko I.; Kananov S.; Karshon U.; Kaur P.; Kisielewska D.; Klanner R.; Klein U.; Korzhavina I.A.; Kotanski A.; Kotz U.; Kovalchuk N.; Kowalski H.; Krupa B.; Kuprash O.; Kuze M.; Levchenko B.B.; Levy A.; Limentani S.; Lisovyi M.; Lobodzinska E.; Lohr B.; Lohrmann E.; Longhin A.; Lontkovskyi D.; Lukina O.; Makarenko I.; Malka J.; Mastroberardino A.; Mohamad Idris F.; Mohammad Nasir N.; Myronenko V.; Nagano K.; Nobe T.; Nowak R.J.; Onishchuk Y.; Paul E.; Perlanski W.; Pokrovskiy N.S.; Polini A.; Przybycien M.; Roloff P.; Ruspa M.; Saxon D.H.; Schioppa M.; Schneekloth U.; Schorner-Sadenius T.; Shcheglova L.M.; Shevchenko R.; Shkola O.; Shyrma Y.; 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.; Tymieniecka T.; Verbytskyi A.; Wan Abdullah W.A.T.; Wichmann K.; Wing M.; Yamada S.; Yamazaki Y.; Zakharchuk N.; Zarnecki A.F.; Zawiejski L.; Zenaiev O.; Zhautykov B.O.; Zotkin D.S.
		
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1768684

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