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Evidence for a narrow baryonic state decaying to KS 0p and KS 0p̄ in deep inelastic scattering at HERA

Title
Evidence for a narrow baryonic state decaying to KS 0p and KS 0p̄ in deep inelastic scattering at HERA
Authors
Lelas D.Lim H.Lohr B.Mankel R.Melzer-Pellmann I.-A.Nguyen C.N.Notz D.Nuncio-Quiroz A.E.Polini A.Raval A.Rurua L.Nagano K.Tokushuku K.Yamada S.Yamazaki Y.Barakbaev A.N.Boos E.G.Pokrovskiy N.S.Zhautykov B.O.Son D.Piotrzkowski K.Schneekloth U.Barreiro F.Glasman C.Gonzalez O.Suchkov S.Dementiev R.K.Ermolov P.F.Katkov I.I.Khein L.A.Korzhavina I.A.Kuzmin V.A.Stosslein U.Levchenko B.B.Lukina O.Y.Proskuryakov A.S.Shcheglova L.M.Zotkin S.A.Abt I.Buttner C.Caldwell A.Liu X.Chekanov S.Wolf G.Derrick M.Loizides J.H.Magill S.Miglioranzi S.Musgrave B.Repond J.Yoshida R.Mattingly M.C.K.Pavel N.Antonioli P.Youngman C.Bari G.Basile M.Bellagamba L.Boscherini D.Bruni A.Bruni G.Cara Romeo G.Cifarelli L.Cindolo F.Contin A.Zeuner W.Corradi M.de Pasquale S.Giusti P.Iacobucci G.Margotti A.Montanari A.Nania R.Bloch I.Borras K.Chiochia V.Schlenstedt S.Dannheim D.Drews G.Fourletova J.Fricke U.Behrens U.Geiser A.Gottlicher P.Gutsche O.Haas T.Hain W.Barbagli G.Hillert S.Horn C.Kahle B.Kotz U.Kowalski H.Kramberger G.Labes H.Pesci A.Rinaldi L.Sartorelli G.Gallo E.Zichichi A.Aghuzumtsyan G.Bartsch D.Brock I.Goers S.Hartmann H.Hilger E.Irrgang P.Jakob H.-P.Kind O.Genta C.Meyer U.Paul E.Rautenberg J.Renner R.Stifutkin A.Tandler J.Voss K.C.Wang M.Bailey D.S.Brook N.H.Pelfer P.G.Cole J.E.Heath G.P.Namsoo T.Palmonari F.Robins S.Wing M.Capua M.Mastroberardino A.Schioppa M.Susinno G.Bamberger A.Kim J.Y.Lim I.T.Ma K.J.Pac M.Y.Helbich M.Ning Y.Ren Z.Schmidke W.B.Sciulli F.Chwastowski J.Benen A.Eskreys A.Figiel J.Galas A.Olkiewicz K.Stopa P.Zawiejski L.Adamczyk L.Bold T.Grabowska-Bold I.Kisielewska D.Karstens F.Kowal A.M.Kowal M.Lukasik J.Przybycien M.Suszycki L.Szuba D.Szuba J.Kotanski A.Slominski W.Adler V.Dobur D.Coppola N.Grijpink S.Koffeman E.Kooijman P.Maddox E.Pellegrino A.Schagen S.Tiecke H.Vazquez M.Wiggers L.Vlasov N.N.de Wolf E.Brummer N.Bylsma B.Durkin L.S.Ling T.Y.Cooper-Sarkar A.M.Cottrell A.Devenish R.C.E.Foster B.Grzelak G.Bell M.Gwenlan C.Kohno T.Sutiak J.Patel S.Straub P.B.Walczak R.Bertolin A.Brugnera R.Carlin R.Dal Corso F.Bussey P.J.Fusayasu T.Kagawa S.Tawara T.Yamashita T.Hamatsu R.Hirose T.Inuzuka M.Kaji H.Kitamura S.Matsuzawa K.Doyle A.T.Costa M.Ferrero M.I.Monaco V.Sacchi R.Solano A.Arneodo M.Ruspa M.Koop T.Martin J.F.Mirea A.Ferrando J.Butterworth J.M.Hall-Wilton R.Jones T.W.Lightwood M.S.Sutton M.R.Targett-Adams C.Kuze M.Ciborowski J.Ciesielski R.Luzniak P.Hamilton J.Nowak R.J.Pawlak J.M.Sztuk J.Tymieniecka T.Ukleja A.Ukleja J.Zarnecki A.F.Adamus M.Plucinski P.Eisenberg Y.Hanlon S.Hochman D.Karshon U.Riveline M.Everett A.Gladilin L.K.Kcira D.Lammers S.Li L.Reeder D.D.Rosin M.Saxon D.H.Ryan P.Savin A.A.Smith W.H.Dhawan S.Bhadra S.Catterall C.D.Fourletov S.Hartner G.Menary S.Soares M.Skillicorn I.O.Standage J.Labarga L.del Peso J.Tassi E.Terron J.Zambrana M.Barbi M.Corriveau F.Gliga S.Lainesse J.Padhi S.Stairs D.G.Walsh R.Tsurugai T.Antonov A.Danilov P.Dolgoshein B.A.Gladkov D.Sosnovtsev V.Dusini S.Garfagnini A.Limentani S.Longhin A.Parenti A.Posocco M.Stanco L.Turcato M.Heaphy E.A.Metlica F.Oh B.Y.Whitmore J.J.Iga Y.D'Agostini G.Marini G.Nigro A.Cormack C.Hart J.C.McCubbin N.A.Heusch C.Park I.H.Abramowicz H.Gabareen A.Kananov S.Kreisel A.Levy A.Gialas I.Carli T.Gosau T.Holm U.Krumnack N.Lohrmann E.Milite M.Salehi H.Schleper P.Schorner-Sadenius T.Stonjek S.Wichmann K.Wick K.Ziegler A.Collins-Tooth C.Foudas C.Goncalo R.Long K.R.Tapper A.D.Cloth P.Filges D.Kataoka M.
Ewha Authors
박일흥
Issue Date
2004
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN
0370-2693JCR Link
Citation
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics vol. 591, no. 41276, pp. 7 - 22
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
A resonance search has been made in the K0 Sp and K0 Sp̄ invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+n and K0 Sp, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5±1.5(stat.)+2.8 -1.7(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221±48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6×10-5. © 2004 Elsevier B.V. All rights reserved.
DOI
10.1016/j.physletb.2004.04.024
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자연과학대학 > 물리학전공 > Journal papers
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